ntrs.nasa.gov...data report for december 1976 through march 1978 on a depolarization and attenuation...
TRANSCRIPT
-
Data Report for December 1976through March 1978
on
A DEPOLARIZATION AND ATTENUATION EXPERIMENTUSING THE COMSTAR AND CTS SATELLITES
{NASA-CE-/5^
-
Data Report for December 1976through March 1978
on
A DEPOLARIZATION AND ATTENUATION EXPERIMENTUSING THE COMSTAR AND CTS SATELLITES
Text by
C. W. BostianE. A. ManusR. E. MarshallW. P. OverstreetR. R. PersingerJ. D. PowellP. SantagoW. L. StutzmanP. H. Wiley
Graphics by
Cynthia R. Will
Electrical Engineering DepartmentVirginia Polytechnic Institute and State University
Blacksburg, Virginia 24061
Prepared for
NASA Goddard Space Flight CenterGreenbelt, Maryland 20771
Contract NAS5-22577
April 28, 1978
-
1. Report No. 2. Government Accession Ma.
4. Till* end Subtitle
A Depolarization and Attenuation ExperimentUsing the COMSTAR and CIS Satellites
7. Autho,fi->c.W. Bostaap.t-.A. ManuSjK.h-. Marsnaj i ,O* Overstree.t,K.R:,Persinger| J..D. Powell,P Santano w IT StutzF13" P H wi i fwJ. Performing Tirgoni ration Name and
Department of Electric340 Whittemore HallVPI&SU, Blacksburg, Vi
12* Sponsoring Agency Ham* and Addri
NASA Goddard Space FliGreenbelt, Md. 20771E. Hirschmann, Code 95
Address
al Engineering
rginia 24061nght Center
3, Technical Officer
3. Recipient's Catalog No.
5. Report Dale
6. Performing Organitation Code
8. Performing Organitotion Report Mo.
1978-210. Ward Unit No.
11. Contract or Giant No.NAS5-22577
Data Report:Dec. 76 - March 78
14. Sponsoring Agency Code
15. Supplementary Nates
16. Abstract
This report presents monthly statistical data on groundrainfall rate and attenuation on satellite downlinks at 11.7 GHz,19.04 GHz, and 28.56 GHz and on cross-polarization isolation at11.7 GHz. Regression equations for relating isolation to attenuation,attenuation to rain rate, and attenuation at one frequency toattenuation at another frequency are also included. Longer-termstatistics are also presented and discussed.
17. Key Words (Selected by Author(t)) . 18. Distribution Statement
polarization, depolarization,attenuation, millimeter wavepropagation, communications satellites , UnlimitedCTS, COMSTAR, percent-of-time,frequency scaling, monthly statistics
19. Security Cloiilf. (ol (hit r.po«l)
u20. Security Clo>li(. (of (hit page)
U21. Ho. of Pogn 22. P r i ce*
* For »alo by the National Technical Information Service, Springfield, Virginia 221 51.
-
TABLE OF CONTENTS
Page
1. INTRODUCTION 1
1.1 Description of the Report 1
1.2 Guide to Related Literature 1
1.3 Discussion of the Report Contents 2
2. MONTHLY DATA 6
2.1 December, 1976 11
2.2 January, 1977 15
2.3 Debruary, 1977 19
2.4 March, 1977 20
2.5 April, 1977 ; 29
2.6 May, 1977 37
2.7 June, 1977 48
2.8 July, 1977 58
2.9 August, 1977 68
2.10 September, 1977 79
2.11 October, 1977 89
2.12 November, 1977 98
2.13 December, 1977 106
2.14 January, 1978 116
2.15 February,. 1978 127
2.16 March, 1978 135
-
Page
3. LONG-TERM STATISTICS 144
3.1 Introduction 144
3.2 Calendar Year 1977 less February 145(j
3.3 June, 1977, through March, 1978 - 145
3.4 July, August, and September, 1977 145
3.5 October, November, and December, 1977 145
3.6 January, February, and March, 1978 146
3.7 July through November, 1977 . . 146
3.8 July through October and December, 1977 146
-
LIST OF TABLES
Key parameters for the month of December, 1976.
Page
12Table 2.1-1.
Table 2.1-2. Attenuation and rain rate percent-of-time datafor December, 1976 14
Table 2.2-1. Key parameters for the month of January, 1977 16
Table 2.2-2. Attenuation and rain rate percent-of-time datafor January, 1977
Table 2.4-1. Key parameters for the month of March, 1977 21
Table 2.4-2. Attenuation and rain rate percent-of-time datafor March, 1977. (Values for 19 and 28 GHzestimated from 11 GHz data.) 24
Table 2.4-3. Percent of time that 11.7 GHz isolation wasless than the indicated value for March, 1977 26
Table 2.4-4. Regression equations for the month of March, 1977. . . 28
Table 2.5-1. Key parameters for the month of April, 1977 30
Table 2.5-2. Attenuation and rain rate percent-of-time datafor April, 1977. (Values for 19 and 28 GHz areestimated from 11 GHz data.) 33
Table 2.5-3. Percentage of time that 11.7 GHz isolation wasless than the indicated value for April, 1977 34
Table 2.5-4. Regression equations for the month of April, 1977. . 36
Table 2.6-1. Key parameters for the month of May, 1977 38
Table 2.6-2. Attenuation and rain rate percent-of-time datafor May, 1977. Note: 19 GHz points are scaled. . . 41
Table 2.6-3. Percentage of time that 11.7 GHz isolation was lessthan the indicated value for May, 1977 44
Table 2.6-4. Regression equations for the month of May, 1977. . . 47
Table 2.7-1. Key parameters for the month of June, 1977 49
Table 2.7-2. Attenuation and rain rate percent-of-time datafor June, 1977 52
-
Paqe
Table 2.7-3. Percentage of time that 11.7 GHz isolation was lessthan the indicated value for June, 1977 54
Table 2.7-4. Regression equations for the month of June, 1977. . . 57
Table 2.8-1. Key parameters for the month of July, 1977. 59
Table 2.8-2. Attenuation and rain rate percent-of-time datafor July, 1977 62
Table 2.8-3. Percentage of time that 11.7 GHz isolation was lessthan the indicated value for July, 1977. . 64
Table 2.8-4. Regression equations for the month of July, 1977. . . 67
Table 2.9-1. Key parameters for the month of August, 1977 69
Table 2.9-2. Attenuation and rain rate percent-of-time datafor August, 1977 : 72
Table 2.9-3. Percentage of time that 11.7 GHz isolation was lessthan the indicated value for August, 1977 75
Table 2.9-4. Regression for the month of August, 1977 78
Table 2.10-1. Key parameters for the month of September, 1977. ... 80
Table 2.10-2. Attenuation and rain rate percent-of-time datafor September, 1977 83
Table 2.10-3. Percentage of time that 11.7 GHz isolation wasless than the indicated value for September, 1977. . . 85
Table 2.10-4. Regression equations for the month of September, 1977. 88
Table 2.11-1. Key parameters for the month of October, 1977 90
Table 2.11-2. Attenuation and rain rate percent-of-time data forOctober, 1977 93
Table 2.11-3. Percentage of time that 1.1.7 GHz isolation was lessthan the indicated value for October, 1977 95
Table 2.11-4. Regression equations for the month of October, 1977. 97
Table 2.12-1. Key parameters for the month of November, 1977. ... 99
Table 2.12-2. Attenuation and rain rate percent-of-time data forNovember, 1977 102
-
Page
Table 2.12-3. Percentage of time that 11.7 GHz isolation was lessthan the indicated value for November, 1977 104
Table 2.12-4. Regression equations for the month of November, 1977. 105
Table 2.13-1. Key parameters for the month of December, 1977. . . . 107
Table 2.13-2. Attenuation and rain rate percent-of-time data forDecember, 1977. Data for 11.7 GHz were invalidatedby spacecraft maneuvers 110
Table 2.13-3. Percentage of time that 11.7 GHz isolation was lessthan the indicated value for December, 1977 112
Table 2.13-4. Regression equations for the month of December, 1977. 115
Table 2.14-1. Key parameters for the month of January, 1978 117
Table 2.14-2. Attenuation and rain rate percent-of-time data forJanuary, 1978 120
Table 2.14-3. Percentage of time that 11.7 GHz isolation was lessthan the indicated value for January, 1978. 122
Table 2.14-4. Regression equations for the month of January, 1978. . 126
Table 2.15-1. Key parameters for the month of February, 1978. ... 128
Table 2.15-2. Attenuation and rain rate percent-of-time data forFebruary, 1978 131
Table 2.15-3. Percentage of time that 11.7 GHz isolation was lessthan the indicated value for February, 1978 132
Table 2.15-4. Regression equations for the month of February, 1978. 134
Table 2.16-1. Key parameters for the month of March, 1978 136
Table 2.16-2. Attenuation and rain rate percent-of-time data forMarch, 1978 139
Table 2.16-3. Percentage of time that 11.7 GHz isolation was lessthan the indicated value for March, 1978 141
Table 2.16-4. Regression equations for the month of March, 1978. . . 143
Table 3.2-1. Attenuation and rain rate percent-of-time data forthe calendar year 1977 less February 149
Table 3.3-1. Attenuation and rain rate percent-of-time data forJune 1977 through March 1978 155
-
Page
Table 3.4-1. Attenuation and rain rate percent-of-time data forJuly, August, and September, 1977 161
Table 3.4-2. Regression equations for July, August, and September,1977 164
Table 3.5-1. Attenuation and rain rate percent-of-time data forOctober, November, and December, 1977 167
Table 3.6-1. Attenuation and rain rate percent-of-time data forJanuary, February, and March, 1978. The attenuationvalues were caused by frozen or freezing precipitationwhich the rain gauges did not record 172
Table 3.7-1. Attenuation and rain rate percent-of-time data forJuly through November, 1977 177
Table 3.7-2. Regression equations for the period July throughNovember, 1977 180
Table 3.8-1. Attenuation and rain rate percent-of-time data forJuly, August, September, October, and December, 1977. 183
Table 3.8-2. Regression equations for the period July, August,September, October, and December, 1977. . 187
-
LIST OF FIGURES
Page
Figure 2.1-1. Attenuation statistics for December, 1976 13
Figure 2.2-1. Attenuation statistics for January, 1977 17
Figure 2.4-1. Rain rate statistics for March, 1977 22
Figure 2.4-2. Attenuation for March 1977. (Values for 19 and28 GHz are estimated from 11 GHz data.) 23
Figure .2.5-1. Rain rate statistics for April, 1977 31
Figure 2.5-2. Attenuation statistics for April, 1977. (Values for19 and 28 GHz are estimated from 11 GHz data.) ... 32
Figure 2.6-1. Rain rate statistics for May, 1977 39
Figure 2.6-2. Attenuation statistics for May, 1977. (Values for19 GHz are estimated.) 40
Figure 2.7-1. Rain rate statistics for June, 1977 50
Figure 2.7-2. Attenuation statistics for June, 1977 51
Figure 2.8-1. Rain rate statistics for July, 1977 60
Figure 2.8-2. Attenuation statistics for July, 1977 61
Figure 2.9-1. Rain rate statistics for August, 1977 70
Figure 2.9-2. Attenuation statistics for August, 1977 71
Figure 2.10-1. Rain rate statistics for September, 1977 81
Figure 2.10-2. Attenuation statistics for September, 1977 82
Figure 2.11-1. Rain rate statistics for October, 1977 91
Figure 2.11-2. Attenuation statistics for October, 1977 92
Figure 2.12-1. Rain rate statistics for November, 1977 100
Figure 2.12-2. Attenuation statistics for November, 1977 101
Figure 2.13-1. Rain rate statistics for December, 1977 108
Figure 2.13-2. Attenuation statistics for December, 1977. Data for11.7 GHz were invalidated by spacecraft maneuvers. 109
-
Page
Figure 2.14-1.
Figure 2.14-2.
Figure 2.15-1.
Figure 2.15-2.
Figure 2.16-1.
Figure 2.16-2.
Figure 3.2-1.
Figure .3.2-2.
Figure 3.3-1.
Figure 3.3-2.
Figure 3.4-1.
Figure 3.4-2.
Figure 3.5-1.
Figure 3.5-2.
Figure 3.6-1.
Figure 3.6-2.
Figure 3.7-1.
Figure 3.7-2.
Figure 3.8-1.
Figure 3.8-2.
Rain rate statistics for January, 1978 118
Attenuation statistics for January, 1978 119
Rain rate statistics for February, 1978 129
Attenuation statistics for February, 1978 130
Rain rate statistics for March, 1978 137
Attenuation statistics for March, 1978 138
Rain rate statistics for the calendar/year 1977less February.
Attenuation .statistics for the calendar year 1977.less February
147
148
Rain rate statistics for June 1977 through March1978 153
Attenuation statistics for June 1977 through March1978 154
Rain rate statistics for July, August, andSeptember, 1977 159
Attenuation statistics for July, August, andSeptember, 1977 160
Rain rate statistics for October, November, andDecember, 1977.
Attenuation statistics for October, November, andDecember, 1977
Rain rate statistics for January, February, andMarch, 1978
165
166
170
Attenuation statistics for January, February,and March 1978 171
Rain rate statistics for July through November, 1977. 175
Attenuation statistics for July throughNovember, 1977 176
Rain rate statistics for July, August, September,October, and December, 1977 181
Attenuation statistics for July, August, September,October, and December, 1977 •. 182
-
1. INTRODUCTION
1.1 Description of the Report
This report summarizes the precipitation attenuation and depolari-
zation data collected by VPI&SU from December 1, 1976, through March 31,
1978, on satellite downlinks operating at 11.7, 19.04, and 28.56 GHz.
This was the data collection portion of the period for which the
experiment received funds from the Defense Communications Agency (DCA),
and the report is submitted to fulfill our contractual requirement of
a final data report for DCA.
1.2 Guide to Related Literature
In this report the data are presented without extensive comment.
For a theoretical discussion of the phenomena involved, a comparison
of theory with experiment, and a computer model for predicting
attenuation and depolarization, the reader should consult
R. R. Persinger, "Millimeter Wave Propagation Modeling
of Inhbmogeneous Rain Media for Satellite Communications
Systems, Report 1978-1, NASA Contract NAS5-22577,
VPI&SU, Blacksburg, Virginia, May 1, 1978.
A detailed description of the hardware aspects of the experiment
is given by
-
- 2 -
C. W. Bostian et^ a_l_, "Quarterly Technical Progress
Report I on A Depolarization and Attenuation Experi-
ment Using the COMSTAR and CTS Satellites," NASA
Contract NAS5-22577, VPI&SU, Blacksburg, Virginia,
December 22, 1976.
For an explanation of the statistical data reduction techniques
used to prepare this report the reader should see
C. W. Bostian et, al_, "Final Report (Second Year of
Work) on a Depolarization and Attenuation Experiment
Using the COMSTAR and CTS Satellites," NASA Contract
NAS5-22577, VPI&SU, Blacksburg, Virginia, February 9,
1978.
1.3 Discussion of the Report Contents
DCA funding was formally transferred by NASA to VPI&SU at the end
of September, 1976, to pay for the construction of COMSTAR-19.04 and
28.56 GHz terminals. At that time the University was already operating
an 11.7 GHz attenuation and depolarization experiment for NASA-using
CTS.
When DCA funds were received CTS was turned off for the eclipse
period, and when spacecraft operations resumed the VPI&SU receiver was
found to be damaged by a water leak in the parametric amplifier
housing. Operations were resumed on a temporary basis in November,
1976; December, 1976, was the first full month of data collection
following eclipse and it is therefore the first month for which data
-
- 3 -
are presented in this report. With NASA's permission we ceased
operations during February, 1977, to make permanent repairs to the
CIS equipment, and hence no data appear for that month.
The COMSTAR D-2 28 GHz downlink became operational in April,
1977, and data appear here for that system beginning with the month
of May, 1977. Attenuation data for the D-2 19 GHz system became
available in May, 1977, and data collected at this frequency appear
in the report beginning with June, 1977. For the period in which we
have CTS data but not COMSTAR data this report provides estimates
of what the COMSTAR attenuation statistics would have been. These
were derived by multiplying the 11.7 GHz attenuation in dB by 1.48 to
approximate the 19.04 GHz attenuation and by 2.71 to approximate the
28 GHz attenuation. The 1.48 and 2.71 attenuation ratios were
obtained from measured attenuation data taken during the summer of
1977.'
Chapter 2 of this report is devoted to monthly results and
Chapter 3 considers data from longer periods of time. For each time
period reported the following tables appear.
Table 1. Key Parameters summarizes the rain and signal behavior
for the month. It gives the total rain accumulation, the peak rain
rate, and the percent of the total rain accumulation that fell at
10, 20, 30, 40, and 50 mm/hr. Also presented are the monthly mean
signal levels at IF; these will give the reader an idea of the overall
stability of the satellite beacon transmitters and the receiver gains
from one month to the next. • Where available we have also presented
-
- 5 -
agree closely with theoretical predictions. Power curves, on the
other hand, can give similar results fo'r widely differing coefficients.
For this reason our a and b coefficients in the table frequently depart
from theory while the attenuation : rainrate relationship that they
describe agrees well with theory.
Also included in each monthly group are percentage-of-time plots
of the attenuation and rain rate data contained in the table.
NOT
-
- 6 -
2. MONTHLY DATA
This chapter summarizes the data collected on a month-by-month basis.
Below is a brief commentary on each month which appears; in it appear
the total hours of rainfall* during the month and the percentage of these
hours during which attenuation and isolation data were collected. In
reading these figures the reader should keep in mind several factors.
(1) Unless otherwise noted, attenuation measurements were made during
all periods of heavy rain when the receivers could maintain phase lock.
Small departures from 100% for attenuation measurement times generally
represent intentional interruptions during light rain for equipment
checks, etc. (2) Cross-polarized signal components are almost always
at least 10 dB below the corresponding co-polarized signal components,
and this means that during severe fades the cross-polarized components
will be corrupted by noise first. Thus isolation data will normally
be available for a slightly smaller percentage of time than is attenuation
data taken over the same time period. (3) For statistical purposes
missed attenuation data can be filled in by frequency scaling.
December, 1976. (Section 2.1) Rain fell for 18 hours, but the
rain rate was insignificant and no rain rate plots are given. CTS
attenuation and isolation data were collected for 100 and 99.9% of the
time. Attenuation values for 19 and 28 GHz were scaled.
January, 1977. (Section 2.2) During this month the rain rate
was negligible and no rain rate plots appear. Very light rain fell for
* Rainfall is arbitrarily defined as existing when the rain rate exceeds0.5 mm/hr.
-
- 7 -
a total of 9 hours, and CIS isolation and attenuation data were collected
for 98% of this time. Attenuation values for 19 and 28 GHz were scaled.
February, 1977. (Section 2.3) No data were collected; the VPI&SU
earth station was closed down for repairs.
March, 1977. (Section 2.4) Rain fell for 14 hours. CIS attenuation
and isolation data were collected for 75.4 and 75.2% of time time,
respectively. Attenuation values for 19 and 28 GHz were scaled.
April, 1977. (Section 2.5) There were 27 hours of rain in
April. Attenuation measurements were made for 87.0% of this time and
isolation data for 86.5%.
May, 1977. (Section 2.6) This was the first full month of 28 GHz
data collection. Rain fell for a total of 9 hours, and attenuation data
were collected for 93.6% of time time at 11.7 GHz and 87.1% of this time
at 28 GHz. The corresponding firugres for isolation were 92.6% and 77.4%;
problems were encountered with 28 GHz depolarization data because of an
antenna problem which affected the cross-polarized channel.
June, 1977. (Section 2.7) We recorded 23 hours of rainfall and
collected 11.7 GHz attenuation and isolation data for 99.3% and 98.4%
of time time. At 28 GHz attenuation and isolation data were taken for
95.1% and 30.4% of the rain time. Continuing antenna problems were
responsible for the low isolation percentage. The 19 GHz system became
operational during June and collected attenuation data for 88.9% of the
rain time.
July, 1977. (Section 2.8) This was the first full month of 19 GHz
operational and during 4 hours of rain 19 GHz attenuation and isolation
data were collected 89.3% and 78.4% of the time. The corresponding
-
- 8 -/
figures for the 11.7 GHz system were 91.7% and 89%. At 28 GHz attenuation
data were collected during 87% of the rain time. Isolation data at
this frequency were invalidated by the continuing antenna defect which
was located and repaired near the end of the month.
August, 1977. (Section 2.9) Rain fell for six hours and attenuation
data were recorded for 96.2% of this time at 19 GHz and 73.2% of this
time at 28 GHz. For isolation the corresponding figures were 77.2%
and 63.3% respectively. The 11.7 antenna positioner malfunctioned and
limited attenuation and isolation data collection to 38.2% and 38.0% of
the rain time; missing attenuation data were filled in by scaling.
September, 1977. (Section 2.10) September brought 17 hours of
rain. Attenuation data were collected for 94.2% of this time at 11 GHz,
for 100% of this time at 19 GHz, and for 97.9% of this time at 28 GHz;
the isolation figures were 93.9% (11.7 GHz), 97.9% (28 GHz), 12.3% (19 GHz
vertical), and 99.2% (19 GHz horizontal). During this period the CIS
spacecraft was shut down every day for eclipse; this biased the isolation
data but its effects were removed from the attenuation records.
October, 1977. (Section 2.11) It rained for 15 hours and attenuation
data were collected for 94.0% (11.7 GHz), 100% (19 GHz), and 94.5
(28 GHz) of this time. The isolation values were 90.9% (11.7 GHz, 95.8%
(19 GHz), and 93.8% (28 GHz).
November, 1977. (Section 2.12) A total of 25 hours of rain were
recorded. The experiment collected attenuation data for 73.4% (11.7 GHz),
85.6% (28 GHz), and 85.3% (19 GHz) of this time. The percentages for
isolation were 70.8% (11.7 GHz), 85.5% (28 GHz), and 83.8% (19 GHz).
Occasional local oscillator malfunction may have biased the 19 GHz data,
however.
-
- 9 -
December, 1977. (Section 2.13) December was a period during which
repeated CIS spacecraft maneuvers were conducted. We were not provided
timely tracking information and were able to collect 11.7 GHz attenuation
.and isolation for'65.3% and 65% of the 14 hours of rainfall. At 28 GHz
the attenuation percentage was 100% and the value for isolation was 99.1%.
The 19 GHz system was disabled by a local oscillator failure and operated
only during 38.2% of the rain time for attenuation and 36.5% for isolation.
January, 1978. (Section 2.14) This month and the two months following
were marked by heavy falls of snow, sleet, and freezing rain. Data
collected during known periods of antenna contamination were deleted
from the data.base. Under weather conditions like those experienced,
tipping bucket rain gauges tend to freeze, fil\ up with ice and snow,
and then send out false indications of rainfall when rising temperatures
melt the gauge contents. For this reason, the rain data quoted for
January, February, and March, 1978, must be treated with caution.
During January, the gauges reported 53 hours of rainfall for which we
collected valid attenuation data 78.6% (11.7 GHz), 56.9 (19 GHz) and
56.8% (28 GHz) of the time. The corresponding isolation percentages
are 78.1% (11.7 GHz), 48.7% (19 GHz) and 55.8% (28 GHz). It should be
emphasized that during these winter months we noted occasional instances
of severe attenuation and depolarization from sleet and snow while the
antennas were clear and no precipitation was being observed on the ground.
February, 1978. (Section 2.15) Our gauges indicated rain for
5 hours, but they were probably measuring melting snow. Attenuation data
for 11.7 GHz may have been influenced by periodic shutdowns of the
spacecraft.
-
- 10 -
(March, 1978. (Section 2.16) Snow and rain were mixed during this
month, and snow filling the antennas was a recurrent problem. Our
gauges recorded 33 hours of rainfall, some of which was melting snow.
Attenuation data were collected for 62.3% (11.7 GHz), 20.9% (19 GHz),
and 52.7% (28 GHz) of the time that the guages indicated rain.
Corresponding figures for isolation were 61.9% (11.7 GHz), 18.9% (19 GHz),
and 52.7% (28 GHz).
-
- 11 -
2.1 December. 1976
Rainfall was insignificant and no rain rate plots are given. 19
and 28 GHz attenuation are scaled. There was insufficient data from
which to develop regression equation.
-
- 12 -
Table 2.1-1.
Key parameters for the month of December, 1976.
1. Rain Data
VPI&SU Accumulation, 39.83 mm
USWS Accumulation, 72.90 mm
Peak VPI&SU Rate, 12.53 mm/hr
Percent of monthly accumulation at
R > 10 mm/hr, 2.29% R > 20 mm/hr, 0%
R > 30 mm/hr, 0% R > 40 mm/hr, 0%
R > 50 mm/hr, 0%
Channel
11.7
19.04V
19.04H
28.56
Monthly MeanCo Signal, dBM
-82.25
2. Signal Data
Maximum Fade,dB
9.65'
Minimum IsolationWhile in Phaselock, dB
20.88
-
- 13 -
UD
cn '
NJ M M Q;re = 33. uj
r̂ x CD oo LU- i— 1 CN O
r— 1 UJ*̂ H (~~\
•a:GOGO
GOCQ^C'
GO
LU
XLU
CD
UJ
g
<LU
H^ O O
u_ < o a^
1—1 E(U
-oo 7
CM
a>s-3Ol
- CD
-
- 14 -ORIGINAL PAGE ISOF POOR QUALITY
RAIN ACTS
01*
23•
456789
1011
12
AV19
L2
AC28 PER
49
(]
i
1
I]2t
5 16.405L 14.52?
7.259I 7.198»• 3.693
2.2741.1900.9030.6720..4S50.395O.2310.1080.0570.0270.0210.0150.0110.0060.003
L 0.002> 0.000
Table 2.1-2. Attenuation and rain ratepercent-of-time data forDecember, 1976.
-
- 15 -
2.2 January, 1977
Rainfall was insignificant and no rain rate plots are given. 19
and 28 GHz attenuation are scaled. The low attenuation recorded did
not justify regression equation.
-
- 16 -
Table 2.2-1.
Key parameters for the month of January, 1977.
1. Rain Datai
VPI&SU Accumulation, 10.66 mm
USWS Accumulation, 50.55 mm
Peak VPI&SU Rate, 4.69 mm/hr
Percent of monthly accumulation at
R > 10 mm/hr, 0% R > 20 mm/hr, 0% R > 50 mm/hr, 0%
R > 30 mm/hr, 0% R > 40 mm/hr, 0%
2. Signal Data
Channel Monthly Mean Maximum Fade, Minimum IsolationCo Signal, dBM dB While in Phaselock, dB
11.7 -82.90 3.39 28.9
19.04V .
19.04H
28.56 - '
-
- 17 -
M Nzc znCD CD
>{£.<
CQQ
en-- OO
«=cCOCO
COCO
COCZtLU
u
10
(O4->to
LJLJ
o a
«33
- - C M
iCSJ
(U
3CTJ
Oo
Hi-HO
-
- 18 -
OF POOK
RAIN ACTS
0
0•
134
AV19
•
0*
1•
»
2•
3»
4
AC28
012•
34*
56
PER
15.73114.7014.7334.3273.0892.1691.5001.0611.0330.5910.56CO.IOG0.0220.0090.000
Table'2.2-2. Attenuation and rain ratepercent-of-time data forJanuary, 1977.
-
- 19 -
2.3 February. 1977
No data were collected; our station was shut down for repairs.
-
- 21 -
Table 2.4-1. '
Key parameters for the month of March, 1977.
1. Rain Data
VPI&SU Accumulation, 57.00 mm
USWS Accumulation, 53.59 mm
Peak VPI&SU Rate, 60.93 mm/hr
Percent of monthly accumulation at
R > 10 mm/hr, 31.42% R > 20 mm/hr, 19.00%
R > 30 mm/hr, ill..21% R > 40 mm/hr, 7.16%
\R > 50 mm/hr, 2.38%
Channel
11.7
19.04V
19.04H
28.56
Monthly MeanCo Signal, dBm
-80.14
2. Signal Data
Maximum Fade,.dB
10.89
Minimum IsolationWhile in Phase!ock, dB
21.28
-
- 22 -
en
ocr
-
- 23 -
M NJ M
P-x CD CO- r-i CN4
D O <
cn
00oo
00pa
00
xLU
\_ „gLUf—1
<
^1—1
i i i
H^
U_0
S--S
11CDCDi— 1
O
O
< /*vO
C 3 ro
OJ
OJ
-
- 24 -ORIGINAL PAGE ISOF POOR QUALITY
R A I N A O I S AVI*
25
a910j.i1215141216
17
•
20
22
24252t>
28
32
353639
A023
0
3O
78
57to-
tt9
1C,1112
14
.
' ?9
10
lo17
2022
2te
H E R
23.3t>710.<
4-,H.11.5191.1040.9700.6760.4230.31.3
0.2790.2730.2700.2680 .2550.2000.1660.1420.113o.iee9,-±03olo870.0750.0690.0600.0590.056O.C53G.0520.051'0.0470.0450.044O.Q420.0350.0310.0300.0270.025O.O240.0230.0220.0210.0200.0170.016O.Q150.0140.0130.012
Table 2.4-2. Attenuation and rain ratepercent-of-time data forMarch, 1977. (Values for19 and 28 GHz are estimatedfrom 11 GHz data.)
-
- 25 -
A V I V
46
c.0 10 io
ACZ8
*
*
2?*
*ZV
PtK
O.OiOo.ooeO.CC60*003O.OCiO.GOC
Table 2.4-2 (continued). Attenuation and rain ratepercent-of-time data forMarch, 1977. (Values for19 and 28 GHz are estimatedfrom 11 GHz data.)
-
- 26 - ORIGINAL PAGE IbOF POOR QUALITY
2 i .2_ /V9v22.C /"7W
23.2*
25. 2 £23.^+9
25.8bCC i
26,
2 7 ,
2t>.2926,. 6 b
2 / . u V2 (f . b i •
C • 0 C •*0 » 0 0 c>C-. GOcG.G1CC.0270. 22fc0 .22b
illli1.15"
2~It>7G
i. •
3. ^ ir i
2fc.
4 y . G 92-7,27
^••t?^iv. ct-v* v
29 » b c •; 9 92 ? . b"? u 0 i
jw .oc3i- .oVv
3C.
3i— i. X.
3 i .2V
31^-*-?
*T. D^tT
^t.bV 7
i-.6I9:> • t 2 j5 » / 7 7
c I 711b . 1 i -a.
-
OF
IGTS3l.>i-^i . t>31 .co
32.i ic"^iv32.1GuCi i6.*i-6Z
3 i . 2 9 i o » 7 3'/32.3LCui i O »
32.**-'?uOi f7«
3 i . 6 V C 0 i 1 ̂ : •
i V . D D ^J. Ibz
33.30001
33 .cV7VV33.7
. i d . s I c
Table 2.4-3 (continued). Percentage of time that 11.7 GHz isolationwas less than the indicated value forMarch, 1977.
-
- 28 -
en
os-(O
O
COJZ•I-J
o
co
(O
toto0)s_CDCO
CM
CO
!n(T3
N:rcs
in•COCM
N
C3
0
OTr""
M
C3
r*.r_
CM
^3*
Co£3crLU
CMcc.
to
o4J
O (O COWl 3 r—
crC CO >>0 -l->.•^ +J -r-4-> r-3 ^™^ **^C i— ITSni _— o
•4-J «^^ O-»-> 1-«a: «t Q.
enC CO
r— "CO(X3 •— >O >O -t->•I- -4J •!-
-M IT3 t—(T3 -I-3 ^~* fOCO r— -Q4-J « , o+-> i-«ar,0 +->•r- -M -i--l-> i-«C
-
- 29 -
2.5 April, 1977
19 and 28 GHz attenuations are scaled.
-
- 30 -
Table 2.5-1.
Key parameters for the month of April, 1977.
1. Rain Data
VPI&SU Accumulation, 107.86 mm
USWS Accumulation, 120.14 mm
Peak VPI&SU Rate, 100.73 mm/hr
Percent of monthly accumulation at
R > 10 mm/hr, 19.5% R > 20 mm/hr, 7.20%
R > 30 mm/hr, 4.03% R > 40 mm/hr, 2.22%'
R > 50 mm/hr, 1.21:
Channel
11.7
19.04V
19.04H
28.56
Monthly MeanCo Signal, dBM
-79.86
2. Signal Data
Maximum Fade,dB
•16.84
Minimum IsolationWhile in Phaselock, dB
10.27
-80.76 lost lock
-
- 31 -
en
Q_•=0:
-
- 32 -
N
CD
M M
CD CD
cn co«—H CN1
*§
-
- 33 -
H i *
f
•.
.
•. .
(Ji2..•X3ft
sV
, .X V1 1ij1%.
^ „io-L /
•
It
.
I V
^ i j"•
k-^r. •
2i£'G
i.^1'A f '•
513^^^*r i**JiOO
iGG
AC] i
.
.u.»
••
•.X
•*
*
***
*»•
•m
***>•*
!*
•»*
"̂O.
*̂
• a••
i -,••*•
i i.i**ifc-
* * L V A 1, 2 o H • =. K
. '-• ^> V07U i iV. . iV
2 10l . 1 1
3 ii* w ^
• • £• 1 c
i o i * G'^ 1 _;v J-O^coiUD 1Ci*i>-Gt3
^3v03 £0.3"C J*r
!̂?
'"-̂u^iI
-
- 34 -ORIGINAL
ii.z /Z -• * a c u . u 0 o
2i .od9VV b .COb
." * c o Dt.y.^'y i . i / ~ ri'y.'i-S" i»O -'-
2 v . o c v V V i . V«r o2 V * - Z V v V
-
- 35 -
iLTi - -— i.-^-yuu 1^i.tssv?
J A. » b V u U i3i .V
j 2 » O V3^..i
3 Z * i 0 0 C i
3 i: » Vi3.0V
33 .7 -
^•fcVLUii*r.Y
ORIGINAL PAGE IBOF POOR QUALITY
i 1 . 3 "t V
13 • 5 2 biD. 027I 3 . U V Oi c . 6 7 «J16.77Ci ir ••»!•»
22* to i^2•3 fCiZ. 6 L->
2 / . 2 C -r2 7 . 5 2 +
-
- 36 -
s_Q.
CU
COc:o
ra3CTCU
coCOCOCU
CDCU
LO•
CM
CU
_a
CD
S
COCM
-cCD
O•
CT>
N
CD
"~ .
CMas
^
Co
•r—
^^1 1 1
CMa;
«"
co
03
CTLU
CM
CO
z
O
4J
3CTLU
- Q.•^-C
COc0•r-+J
rar—coa:
""'
Q
O
CO
OID r-•=3- CD
• oCM "~~
i— * r^
o"•""** CO•=c— - vo•— CCCDO V
COCo s-
o
o
2
CM00
tn
*00
o ,
+-> -r-(tS i —
•i —C ,̂ -r--M H3 103 •!-^? -"~ ̂ JJc r— U 03 CUCO 3 i —
CTC CU >,O. +->•t- -(-> -^^_> n3 r-~ra -i--7 ̂ ~^ oc cr> 03CU ^— .Q
•!-> — • O•(-> S_eC =3! Q-
Qt— t
Qt— i
Qi— i
CDC CO
t— 'cu(O r— >O 03 COC/) 3 i —
CTC OJ >>O -I-1•r- 4-> -r--P 03 i —O3 *r" '^ ^~^ f1"*C CO 03OJ CM JD4J ' O-P S-•=i =t Q-
-
- 37 -
2.6 May, 1977
19 GHz attenuation values are scaled. 28 GHz isolation data are
suspect because of an antenna defect.
-
- 38 -
Table 2.6-1.
Key parameters for the month of May, 1977.
1. Rain Data
VPI&SU Accumulation, 49.63 mm
USWS Accumulation, 67.06 mm
Peak VPI&S.U Rate, 133.90 mm/hr
Percent of monthly accumulation at
R > 10 mm/hr, 60.00% R > 20 mm/hr, 42.27% R > 50 mm/hr, 13.08
R > 30 mm/hr, 30.18% R > 40 mm/hr, 19.14%
2. Signal Data
Channel Monthly Mean Maximum Fade, Minimum IsolationCo Signal, dBM dB While in Phaselock, dB
16.6711.7
19.04V
19.04H
28.56
-80.20
-81.04
-84.01
-85.96
30.11
44;56(s)
81.60
-
- 39 -
o
en
-
- 40 -
M M M
ooCN4
ooCO
ooCQ
ooa
XUJ
«< oo00o
00
UJ
* 83 8°B< oo a< o n«o pa
-
- 41 -
ORIGINAL PAGE ISOF POOR QUALITY
RAIN ACTS AV19
0
123
b»
*
10*
11*
»
12
01
2•
•
3
B9
1011•
1213
1516
AC28
0123•45
b7•
8
10*11
1212
15
16•
1713*
2123242527
28293033
PER
42.02140.2G93H-. 36020,6047.5766.8372.2231.2270.7650.6030.5750.4250.3120.2710.2680.2430.2390.2290.2270.2160.2130.2110.2010.1970.1830. 1660.1800.1790.1770. 1710.1680.1670. 1600.1510.1430.1470.1450.142
141C.i37G. 1360. 132C.1290.1230. lie0.1230.1220.119C.I 180.1170.1140.1110.1100. 109
u
Table 2.6-2. Attenuation and rain ratepercent-of-time data forMay, 1977.Note: 19 GHz points arescaled.
-
OF-
R A I N
IS
t
1718
2021•
22
232425
27*
2U
30313334
•
35
37
40414344454648
ACTS
910
-11•
12•
13
1415•
lo
17
19
2021••*> -*\t.̂ .23
24252S273Q
AV19
17•
192022•
232425
*2628•29
303233
353839•4-1
4245464349
AC28
3538394145464748
5
5657
6061
6567
69707779
82
PER
0.1080.1020.1010.100C.0990.0960.0950.0940.0930.0920.087"0.0810.0740.0730.0680.0650.0640.0630.0620.061G.0590.0530.0570.0560.052G.0500.0490.0450.0470.0460.0450.0440.0430.0410.0390.0380.0360.0350.0310.0300.0290.0280.0260.024O.G22G.0210.0200.0190.0180.0170.0160.0150.0130.012
Table 2.6-2 (continued). Attenuation and rain ratepercent-of-time data forMay, 1977.Note: 19 GHz points arescaled.
-
- 43 -
ACTS49
Ij : . - — *«5* - • azSo • P5
10? T 50 97 O.o07112 - 5i " ^'^°6155 - |2 /02 ?*004
50 54 IvJS .V-00360 108 V"U02
120 ,?»00l
Table 2.6-2 (continued).
May, 7977.Note: ]g'cu,scaled. 2 P07nts are
ORIGINAL PAGE ISOF POOR QUALITY
-
- 44 -
OF POOR
2 o .
it. oo *-' • '•'C ̂i / . tc C . U G *tI V . f e d . ' O . O C /i ? . < 3 f c v- '-°f1
i t i . u / v - y v V•9 f f cX ii « ** C ' U » U i >3G.G ivxc.dc v .o^o
t27>j9y , U .u iZi v -2ii U » w 3 7
iV.'-ta u • u *t csiv.oo ' - •V '*Viv . ab l '-(j : j-
i V . b t G Q i L .G2-2
i C « j i C c. uoti
Zoltc U . u = o 72G.-*> O . U V l2 C.ob V . . G / Hiy .bb - % r l ; -
""'^i.^o. H*0^.!:'
2'i.i6Vyv ^'• J-Jr**2 2;» U ? ^ » •>• V''
4-Z.^.t" V*^ 0 ' ' '
"°3!^d ' - l i l f c
c . i £. t
u . i 5 c
^ 6 * d b u C i i.'. i "•
-
- 45 -
iCTi21. 2 a
3 i .oVtu la. I
— w —- . i c /
2o.-r-/ ^'^J, '^o .H-VOOi ; * f ^ r
2b.oe V * - " K^o.aoWv i*;?v w «'.» V » 2 i
-
- 46 -
ICTS32.2999932.3000132.-
-
- 47 -
CMa;
N
CO
VOin
COCM
CTi
CO
O
CTl
d)J=4J
o
+Jrd3cr
cointo(D
cna;
CM
CU
N
CO
o
ra3cr
CMOL
to
4Jra3cr
CMOH
rO3cr
O•r—
ra
cr:
CMcooco
10CO
ve-in
CM*
coco-—co • oir> i—II i— CO
o
coo v
coo s-
o
cr>CO
•K
UD•
lO
II a:
CM
*COCO
inII
CO
CO
in
co mn a
3 i—0-
CC JDra
C J3O O
5-
CO
CO
*CTiO CM
• CO
r- COi CM
COCT>
CTI
CJ>
ra f— >o ra a>to 3 i—
crs= ai >>o •»->
•i- 4-> -i-
ra -t-
c: i— »aaj •— JD+->—' o4-> S-< CC CL
UDcn
oCM
CTi COi— CM
COCTi
CM COI
COin
raoto
4JrO
cO) i
•a: CO
CO
CO
CO i—CM r—
01
raoin
ra
-
- 48 -
2.7 June, 1977
28 GHz isolation data are suspect because of an antenna defect.
-
- 49 -
Table 2.7-1.
Key parameters for the month of June, 1977.
1. Rain Data
VPI&SU Accumulation, 105.22 mm
USWS Accumulation, 145.54 mm
Peak VPI&SU Rate, 136.57 mm/hr
Percent of monthly accumulation at
R > 10 mm/hr, 41.92% R > 20 mm/hr, 31.40% R > 50 mm/hr, 14.46%
R > 30 mm/hr, 24.77% R > 40 mm/hr, 18.95%
2. Signal Data
Channel Monthly Mean Maximum Fade, Minimum IsolationCo Signal, dBm dB While in Phaselock, dB
17.6711.7
19.04V
IQ ndn1 3 • y^Tll
28.56
-79.59
-83.39
-85 07O J . U /
-81.47
14.08
20.85
38.18
-
- 50 -
^cr>i— i . . . - • •LUZ ,
0 °
5 0 o^ ooS Oo°S; Ooo OOS oLU Q
^ 0°S .08S 381 """ ' ^\ ""
1 ~ _ Qj
S oo
u_ OO°o 00
^ 00° °1 11 1 1 1 1 1
CD CD i— H r— I ^H rHCD . r-H - CD CDi-H CD
CO ^
^ E
LU r̂f~™ r*^
"en
-
- 51 -
POOR
M M M
to t o î ~)
r^ cn co- i—I CM
C_)oo«=cooLUUJ
X
CDCD
o
°
-
52 -ORIGINAL PAGE ISOF ?OOR QUALITY
ACT* AV19
r o
23 . - .
3» » »1 *• » *S3 • .
- - . 3• ^ .6
7 ~ i r3
8• . 6
1Q I I* -
7• • .
11.a
12 I I13
-i*- . -i , •- - . -- .- .-r9
15 • _ _ • • ; . : ' _.16 - .. - .-• : • ' • ' • • • • !
17'. • " '.,•'.:•».' . . • • ' • . - " • . ,"••: ^--:•" r^*-"-v-----••_ r 10-
AC28
9
0 . • :.i /23-*+•j67 -."
8- ,; "
« . . ' ' •
»,•;-..> • '
> 9 '•'•:•••»/•-'•;•'••'•». "'._. • " ; '»- • '». '•."
10**
11
»• * -
*
*
12
13. '» •
!•*•.:..
.
15*-
16. .^ .
17••-». -
ia»»
. .19,.
20»:
»
-• 'V>tR', ;0.; 25.5GC
. 13.228..1C. 283; 9.966
- 9.207• : . 8.105
5.901*.7393.6622»^'y
- ' .'2.1256":• 1.661'!.**!
1.3S6•" . -'M..152'. 1.102
- 0.7520.6970.3300.52*0..*65O.*200.3980.3710.350C.339
01306
0 12470.237C.2360.2270.2200.200C.19S0.186G.1790.1JT30.1630.1610.1550.1*70.1*00.139G.1360.1270.1260.1230.1210.120G.11.30.109
Table 2.7-2. Attenuation and rain ratepercent-of-time data forJune, 1977.
-
- 53 - ORIGINAL PAGE ISOF POOR QUALITY
RAIN
19202122•232V
26*.
272829303233
35363738•
39•tG
5250573862
757o7883848s
87
888990105136
ACTS AVI*
' " ' " . . * - •
1
1
1
,. , . , . - . . - .--.^ - ..." • " • - . .
- ''• • ' "' •'•'' »
••- " • • • ' .- • ••"'• ; '•' '
-•-» ."- ••'-'• ' -•• _. ' •' m
- 912'• • ,'.".;'.'/.••••"••:_'• • '.'••• '. .*..: ' •v»
13,
1^»-m. ' -,
15.•
» •» "••
16,.•
9
17. • •. -
16«
19..
2021,
13 221** 23
AL2b
fc
21».
- - •
22. ; . »,
- " . - ' • .*-
' ' " • ' • ' • -•23-.
- ' •-..)..•;';.-»: ' • • - .
•'' ' '"'. '»•'.' ':2& ' •" ' • .' •• •'
- »25
• - . .^ .
26 • '.
• » . '»,.».
^27
*-
-. »
*
28,
29. —.
.ii»
32333-*-.»
3D,
36•*«-lta-̂7
FcK
- 0.1 Co0 .1050.1C10.0*7
cloe9olotio0.082O.OdC0.0760.0750.07**0.0710.066O.O61O.C59C.G560.05^-O.G53O.OsO
olo^tG.C t30*0^20.0390.0360.0250.03^C.032
010300.0290.0280.0270.0230.0230.0220»u2j.
0.0170.0160.0150.01**-O.013C.CiO0.009G.GC80.007O.Q-060.005O.OC3C.OC20.001o.oco
Table 2.7-2 (continued). Attenuation and rain ratepercent-of-time data for
r June, 1977.
-
-54 -'
I CIS
17.6699918.4699919.0/99919.88001
• ::•?- 20.48'••;";:"• 20.06••:":^;::20.88-^2:1.08001.""::—21.28 •^:>:2i.8a.~ 22.07999SK«;^22.29:/^te-^22.08-^(*-^;22.88^22.88999Sfe"?-23.09'-^v;.:
-
- 55 -
icrs ' ;.-• 2&.-M-9 •-'-- "" 10.880
23.49001 1C.06?• -~ : • 28.08 il.^Ou28.68999 14.12028.69001 v ID.730
28.68 '15.97128.8a001 -•'••• 16.33e28.d8'»99 , 17.36-*28.89001 I7.t05
"29.-C6999 IS.01929.09 : 18.129
29.27999 16.433y .2.9.28: .; 16.600
•- 1 -29.29 - • . . - : • :,-•;20.622- s' ^29-.4S -••:".• -;-!:2C-.737
2:9.49 ^3.5oG29.49001 25.08-*
29.6b '2i>.23i29.68999 26.56729.69001 26.5ci'+2V.88999 28.8 if29.89001 iC8.tt^330.06W9 29.178
30.09 30.16930.29 oi.599
30.29999 34.368•V- ••• 30.49 '35.399;30.490O1 s 35.767
3̂0168999 3615̂ 9*̂ 30.o9COi i6.557;3O.69999 . 30.583
- :> 30.7 36.5V1-30.88999 3o.89-i
-: ;30.a900l 37.iVi"r'r --3G.9 . . ; • '57.667^3L.Q8999 -ifc.ClV
• • & • ' • • 31.09 - .'•--i •-'•• 31.1
,,.: 31.29 1-2.182•^•31.29999 •4-}i.i59
]'-..•'>. 31.49- 43.J.81'£'31.4vOOl *3.133
31.49999 ; 43.20131.68999 ^3.37131.6^001 ^3.52731.69999 -+J.71*
31.88999 4^Il2or3i:.89001 44.^1o
31.9
-
- 56 -
ORIGINAL PAGE ISOF POOR QUALITY
1CTS -• '. =-£52.29—
32.29999
. - - . 32.4932.4900132.4999932.50001:32.60999
' 32. 690013 2.6999 9.
-.33.09.•'' 'A3-+L.33.2929999--
33.49
'^. 33.^*999 9^33.50001.-•33.60999
^'33.6999 9- • • : ' ' . 33. 7•••33.88999
33.a9COI." - ; • - 33.9
3«i-. 0 £99 9
.-•-• 3^.293^.29999
. 3«t.3CCQl
3-+.6fa99934.69001
3^t. 734.8899934.3^001
.'3D.09::• '-• 3a.i
- ' ^35.2933.29999
35.1-9001
50.963Si.059
31.61651.61731.8913 2.20 Jf-2.33032.423?2-62-?
' 36.466 '36. 65 1
:•' 57.648
. 5- 8.38. 5
60.90161.382o2.24462.5 1762.3736V. 82 3•03.42965.69d66.07966.32S66.82166.82707.32G69.660&9.662J
71,239•' 71. 64o72,316.73.98074.41374. ̂9̂.74.98373.13373.17675.740
76.3̂ 976.96̂ -78.2977&.7C679.753
SO. 3 998J..030
O 1 . 44Ctsi.599
Table 2.7-3 (continued). Percentage of time that 11.7 GHz isolationwas less than the indicated value forJune, 1977.
-
- 57 -
cn
A
co3
•-3
CMcu
r—jQfO
Nin
voLO
COCM
NIECD
0
cn
M
CD
^^
CMOS
(/)
Z
O•r™*•Mro3crLU
CMC£
CO^^
• C0•r-•M
•̂CTLU
CM
to
—O1 <
to3crLU
Q.•r—fI/)Co-13r^COa:
oo
COCMCO
i
0
• ^COCM* O
CM r—ii co en
• o
LOo
•
LOLOCM
1
^>^~ ^"^
• ^^en » —CM O
II CO CD• o
I— iLOi—
COCO
coCOCM
1
r—LO -— *
• -=Cen* —coco on • en
LO O
0— CO«=c"o *eno v •
COc0 S_
oH-i M-
0000
CMr—
*
f^"*• ,__
LO (J to COc/) 3 i —
crC O) >,O -M
•r— JJ 'f—4J 10 r—fO •!-3 -^^^ *^C CO toO) CM J3•M Ot % e
-
- 58 - '
2.8 July. 1977
All data collected are valid.
-
- 59 -
Table 2.8-1.
Key parameters for the month of July, 1977.
1. Rain Data
VPI&SU Accumulation, 48.67 mm
USWS Accumulation, 50.8 mm
Peak VPI&SU Rate, 201.10 mm/hr
Percent of monthly accumulation at
R > 10 mm/hr, 71.65% R > 20 mm/hr, 69.14%
R > 30 mm/hr, 67.77% R > 40 mm/hr, 64.61%
R > 50 mm/hr, 56.20%
Channel Monthly MeanCo Signal, dBM
2. Signal Data
Maximum Fade,dB
11.7
19.04V
19.04H
28.56
-81.69
-85.96
-86.92
-81.70
' 50
57.26
57.26
114.52
Minimum IsolationWhile in Phaselock, dB
' 11.07
**
* System was not yet in operation.
** Antenna problems invalidated data.
-
- 60 -
CDr-H
-
- 61 -
N M Mzc zcCD CD
cn oot-H CN
!"•*•en
o
-
- 62 - ORIGINAL PAGE ISOF POOR QUALITY
RAIN ACT* AVI* AC28 PER
1' • ••
2'' •-••3
••4
.6
7••
*8»
•
10
131524272931
'"•' o". •-" • I •':. • 0
• • . ••1. " - ': .- /
•- • •' ' . . - • • - • ' -.-. '•-'
' ' • " ' '•' -•' -'-": I" ' '" "• - '
2 ,:• :\v' . :•--"-,. . • • .,3- ; . - • • :•• : ; . . - - . • • •
.. • .•• v'. , '•' '"'.' ' .- "•' '•• • .' -., ..
-:, • - •••.-' •-•;"-" 2- • - . "-.:• ""'".'••'-' ;-: '-."•=•' •' * ' • . . • ! . . • • . ' • • • • : . '
'•'"•;-''.:• » ''.•" ::'.':'.-'l • '• :- :~'* » : '"- .-. . ••".'-'•" '• ' .:•. '-"-' • • ' • ' ' , • •- - . " ' • ' •" .-- '"'• . "-• " • - . - - » . --1 '" '" - '-r:-"-. ^ '-•-:- "
- » .• :..- 3. .-•. . • ' •• - - •; ' . ^.. -'. ' •• -. . ^.. • .' •• .
.' • •- ' • .• / ' - . • ' -••. . • : - • • . - •' . - • ' - - - ' . • 4 • • •.» " : • ' . .
' , : • • -:..: - : '--".,. "s.- • - . • •" •• ' ' : 6".
•• ' ' " ' ' . » . ' ... " "• . • »• ' '.
• 5• • " •-••• 1 " •'• .•»-," '•
•'..'. ».'•• '•.' ! • " . . ' ' .' ' • & • ; • . 7 "• -; : . - • • - . 8 • ' • - .• - • - _ 7 - • ' • • .,-....,.^1,,,;
• • ' -.8. 9
10.; 9 ..... .10 .11 .
1112 .
» '12
' '" • ' '!** .
1315
*
*
* ••• -
* 1615 16
i ' - - - -''.'^' - , / - . - : • ; - •" ; - ; , . ;-._..;•'
•:::a • - - "»' •1.
..".'2». • •
.. ' » .• „ ^ -- 3-
•»
^-- . - » • • ' .
£•£•-•-,'."':••'.».. '• ' • ' • «> '• ' *
*
7. . . ' • - •8
• . ,9
• "»/ .•' 9-..
10».
• ••» .111213 :-•--- •..-- ",.14
*1518.9
192021..
22„,». .
23.»
242627
23.33819.95715. ̂ 2 29.2745.3033.2662.9711.9990.963O O"T*>.8720.5170*^270.422
0^3170.2620.2110.1860.176
Oll330.1320.1200.1110.1100.1090.1080.1060.1050.1010.100O.C97O.C95
'•— Oi0920.0910.090O.C88O.Q860.08^.O.C83O.Q82O.C800.07b0.0760.0750.0720.0710.069O.C680.0670.066O.C65C.C640.063
Table 2.8-2. Attenuation and rain ratepercent-of-time data forJuly, 1977.
-
- 63 -ORIGINAL PAGE ISOF POOR QUALITY
RAIN
373839
»
4142
*
*
: 4346':;.r 47
•-•• '" »" •£• 48--. • r '. " " »;-.-; 50•J&51.•;A;>4V'rT "-•'-'"•
v;^56;"•' •
57.,.,, . ,. . ^5859
»-•606364S£70••-
~ >. . .75
. -'-• • ••--
7o7980
• » '
»'
819
6586919293
112113198201
ACTS AVIV AC28 PER
. 1 9 . 0.062• 4
1
It
1
1
... . . . . . .
:' . ; -;'.LS
• 31 O.OoO22 33 0.059
> ,-- 24 36 0.05tt. . 39 0.057
25 45 0.05626 0.055. .28303132
. ' 33 •.- .- . -• . . . . , -3^.. 35
36. ;-..• 37
; .~..: _..-. . -a o: 3Q
- ' . - ' - •39
2021 4023242527 +28
. -. ... •
_^
• •
-•
"
*
_
"
-
'. • ;•. .
0.0540.0530.0500.0490.0^80.0470.0460.0450.0^40.043O.OM}0.0390.0380.0370.036O.C350.03**.0.0320.0310.0300.029
50 0.02651 0.02556 0.02457 0.02260 0.02161 0.020
.-. ._ • ...,..;.; — 6:3-., , 0»019.. _..:.. 6-4- O.C18
. 66 0.01768 C.C1670 0.01572 0.01374 C.G12. 0.011
77 0.010. 0.009
79 O.OOb0.007
80 0.006. O.CC^-. 0.003
Q.G0250 83 6.001
50 57 11̂ - 0.000:.l̂ r:. ;:>-::-. -Xi-- V:.-:"' ;."
: '' ••' " ' : " • ' " .
Table 2.8-2 (continued), Attenuation and rain ratepercent-of-time data forJuly, 1977.
-
- 64 -
ORIGINAL PAGE ISOF POOR QUALITY
ICTS PtRCENT
11.0711.28
11.6b999li.6712.07
12.S099912.^8
" 13.07"13.07999
13.2815. *8
" 13.88:16. 08001
16.
Ib.dtt
17.0800117. 2S
17.4799Vi/.^a17.87
19.27VVV19.̂ 619. 6d19.88
20.68
21.07VV921.C3GC1
21. od21. aa
21.8BCC121.8900122.07999Z2. 27999• 22.̂ -6
22.0822.8899923.0799925.C8001
0.0010.002
O.GOoG.OO?O.CitoO.OilU.020Q.0210.022
0.0260.028O.C31
0.03^
0.037G.043
O.G^ti0.0500.051C»0^:J0.0330*030O.GouO.Obc*G.088C.U890.09i0.0930.091G.C9C0.100C.IG9C.11C0.127
0.136
0.131U.1330.1370.638
Ci.663C.93'60.936
Table 2.8-3. Percentage of time that 11.7 GHz isolationwas less than the indicated value forJuly, 1977.
-
- 65 -
ICTS23.47999
:. 23.*»-823.68999
23.8823.8899924.27999
24.632**. 6899923.0799923.0899923.27999
23.28•»-•-•-> 25.2923.41999
23.1-8- ' 25 .-t-923.6899925.8VCG1
26.1)926.27999
2o.2Bf 26.29
2fc»od26.6o99'3)
. ^6.aa26.^899926.a900i27. Ob999
27.0927.27999
27.2927.9627. *9
27.6899927.09001
27.a899927.8900128.07999
2&.. 0928.27999
26.2J*, 28.29- ••••• 28.^928.M-9UOI28.6899928.69001
28.89U0129*07999
• • 29..C9
1.067
l.lOo1.1931.22o
1.3231.325
2.197
2.3972.413
2. -+66
3.0^93.1983.199
3.4353.71**4. 108.* .273
3.122
5.6373.£33i.VOo
6.43̂6.3307.1217.13'17.132
7.8376.313B..369
88.6669.3829.6011G.34S1G.78&10.9G9
OF POOR
Table 2.8-3 (continued). Percentage of time that 11.7 GHz isolationwas less than the indicated value forJuly, 1977.
-
- 66 -
IcTS229.H-9
29 .
-
- 67 -
CMCXL
N
CJ
COLO
COCM
cn
A
>>
3
O
O)
CO
O
4->033crCD
cocod)s_0>O)o:
CO•
CM
O)
!o03
N:r
ocn
N31CD
CO
O
033cr
CVJ
033cr
LU
CMo:
co4J03
COCO
CDcc:
CMCO
LOCOCM
COID*
ton co cn
o
I
CO
co • crCO i—irr- cno
o•co
cno v
coo s-
oCM
CO
• LOCO VO
*co• LO
CO LO
II C£
COCO
C1
CO• (
co •CO
Qi
3 i—cr
03 i—
OL jQ03
O O
«=C ex
COCO
CO
• COcn
n co
r— CO•— CM
*O. CO
•— COII
r— CD
cn
03 r— >O 03 O)CO 3 r—
crc: 01 >,o •*->•r- 4J T-4J 03 t—
O
ex
cncn
CM
-scn cor— CM
ocr>
CMCO
i— O
II I—
a>
03oCO
•4->03
0)
+•>
J303jQOS_Q.
cncn
LO
COCM
CT>
COCTi
CO
LO• cn
r— O
CO •—CM ~--
cn
ICO
cnc
•T-
i.
3T3
-oO)
CJC3
o•r—-l->
03
CCD+->-(->•=£
i— >03 >
4J-l-> •!-03 i—
•r--—jQCO 03CM J3v O
«=C Q-
CO>,oo
-
- 68 -
2.9 August, 1977
All data collected are valid. 11.7 GHz attenuation values for
the last half of the month were scaled; a pedestal malfunction kept
these from being recorded.
-
- 69 -
Table 2.9-1.
Key parameters for the month of August, 1977.
1. Rain Data
VPI&SU Accumulation, 56.61 mm
USWS Accumulation, 161.54 mm
Peak VPI&SU Rate, 121.73 mm/hr
Percent of monthly accumulation at
R > 10 mm/hr, 74.21% ; R > 20 mm/hr, 64.46% R > 50 mm/hr, 38.77%
R > 30 mm/hr, 54.18% R > 40 mm/hr, 48.51%
2. Signal Data
Channel Monthly Mean Maximum Fade, Minimum IsolationCo Signal, dBM dB While in Phaselock, dB
17.68
6.11
11.91
11.7
19.04V
19.04H
28.56
80.18
85.74
86.87
83.04
13.53
36.59
30.44
73.18
-
- 70 -
1 —r^en00
LU
o° b°
00OQ
CNJ
cu
-I"
OO 0
0
-
- 71 -
NZCCD
N M
CD CD
CD OO«-H OJ
paQ
-
- 72 -
RAIN ACTS A*I? Acaa•: •» " . . ' ' . ^-~-:-"0' '.-' '". . •
- . " - •- • '. • - : 0 •
0»
•• :: . '-. ^ '.
•' •': ... '.'-*',' . • ' . .,,.,.. 0.. ., ..- ...
1 . ' - '2
-;.--;- - » . - • ' ••-:-
:*:-••._• .• -. ' :" •' :
."•:.'•''" » - ' • • • ' -.,„•. .^ .... .-. .....,-...- • •
4.•"• »
• ' 5 ' . •.6
. . • 97%. •8» ' -9•10~ ' "
.... 11 . . .,. .1.1.1213
- .-14. .
15,
16• 917
»ia19
• • .2021
*
2223
.• •'•
'• •- . • ' • • •
- • '. '.-.--':.'/"
; ' ' , _ - ' .
• - ';:•:•;-. .'>"••
.' ••*' •. - '• --•••-•- ••
";
•
.
' • . : - .
•
_
_
'
.
9
1
•"•• £ •' . - • - - , .
. • .-' -3' • • • ' . . * +
• •• •• ,.:. . ^ -•
5.̂
' ^, -• ; b
• _; •,:•• ^ \ ..- : "' '•• -..-..: ^ - ; • • •
- ' . ' = • ' " ' 7 • ••a*9•
10• fc11
*-•^ -
12- - 9 •• ». • 9 'i314. ,•
15• «.-
1̂17" • •
^^*
18 -.
' - ' »1920
910 21• • . .
'--V - - -•' ••" •: ' .. •* '
, - . . " •
PER
17.51114.2104.566*t-.3533.1812.7561.6361.0210.691C.6530.4770.4570.3880.3410.3090.2950.2810.239C.2330.2170.2110.20&0.196CT.1890.1830.1800.1710.1670.1580.1550.1520.1480.1420 . 1400.1340.129C.,1250.1220.1200.1160.1120.1110.11C0.1060.1050.1030.102C.C99O.C950.092O.G900.085O.U84O.C83
Table 2.9-2. Attenuation and rain ratepercent-of-time data forAugust, 1977.
-
- 73 -
ORIGINAL PAGE ISOF POOS QUALITY
RAIN AC1
, * -
25 "--—-,,,: 27 - '
28.;£;: ,2.9•---30 • - • • • ":%' 31 •• •n'.-32 - . ' • • • •
34«r-. 35
- . • • • • : : 36• .«-; 37"VV-.V -a**• ,-. :;.,:: 3V
• VcJ-Up- *•
•4042
.-,-,..^3 -- . . - ; - • , -
•;r^/.^^... • ^ .
• • • ' . ' • - m- • • •-'- ' : '46• ' • • - ' : • _ : 4 8 . - • . - .. "; ' . *'' '
495152
: '.'...53- , . '. . / . . » - ',:. ...-'_• -
:; . ' » . ' . . . ' - • ' - :
'^:;-54: -----.-- •: '55 • •• -
"•-- . - '-56 ' ; '";"• :.:.. 5g; . . - : . . . • .-
5960
'"•' .- ' • - - ' . . .
' . " " ' . • - "
616265697072 1
- 7485 1889397
100102103106 1J
*' - *
S AV19
••
. *
*. .;• ' • - : . 11• •' ' ••
••12
••
»•
*' - •— ,
»
13*
IM-*
• - . -• 15 -- ' - . • *>•
- . • •-"
16' ,' - »•
. ".- ' .'" •• '
17" - " . * •
•. . . • ' " '
*
-'- '••'. " Ia '.••-
• •-19
* ' ' ' *•
20"v *
2122
»
• •
'*
•23-. .
24•»
25• _ *
*
•27> .
30
AC2&
22*
•• • x
23»
•
•
•24*•
'. - »-
', ' ' -- *•-
25•
26»,
• -
2728
»
.' * -
29303132
*. '
. 33*
34363d39•
.41424344
*
*
»
*+74849
•»
50•
•*
54»,
61
PER
C.0800.0780.0760.072O.C690.0680.0670.0650.0630.062O.Ool0.059O ntiT• U3 i0.0560.054
, C.0530.0«»90.0480.0^60.0^50.0n40.0430.0^-10.0400.0380.0370.0360.0350.0340.0320.0310.0300.0290.0280.0260.024O.C22O.C210.0200.019Q.QLti0.016
" 0.0150.0130.012G.OilC.OiO0.009c.coa0.007O.OC60.0040.0030.002
Table 2.9-2 (continued). Attenuation and rain ratepercent-of-time data forAugust, 1977.
-
- 74 -
RAIN
112121
ACTS
"•" •13
AV19
' 33 "'" "'.3t>
AC2tt6773
>£R
0 .0010.000
Table 2.9-2 (continued). Attenuation and rain ratepercent-of-time data forAugust, 1977.
-
- 75 -
OF POOR
ICTS PtKCtNl
17.6818.27999
18.4-819.0/999
. 19.aa- 2G.6821.0799921.08 Coil
22.079V922.27999V'.-=.-:22»2-b':.»-. '..-22* 6822.69GOI23.G7999
23.b9C01
2̂ .889992>.29
25.0899̂
20.&9Q0126.88
27.0799927.0927.29
•••.-'27.*»•»27.̂ 9
27.6827.6̂ 99927.69CG127.8S99927.8900128.G7999
23.08999.->- 28.09- 28.26
0.002G.G05G.G090.0120.0190.031O.G330.036G*G3o
0.0^3O..C50Q.G550.0620. 07 i0.078G.GblG.G63O.G9O0.092O.G95
U.llH-C.11&
G.121
G.12d0.13G0.2660.2 "i 0Cy.2V7U.3S60.389
0.913
2.0722.073
3.7605>.08c6.9**Z
10.77^
16.173
Table 2.9-3. Percentage of time that 11.7 GHz isolationwas less than the indicated value forAugust, 1977.
-
- 76 -
1CTS - - ":': v 2 «. 2 9,->A:;̂ 8..̂ j.-.^.•28.4928.4900128.689992«. 09001
"~,T 28.8828.88OU128.88999-
PERCENT
VS -29.0929i27999^29 .2 8-
.29.6899929 .6900 i2,9.88999'29.89001
30,29
30,^90013C. 49999
.30.69001JO. 6999 9
^0.730.8699930.89001
3C.9^- 31 .Qy
31.131.29
31.2999931.30C01
31.
-
- 77 -
1CTS PtRCtNl. 32.29 75.olo32.2*999 . 76.638
32.49C01 77.8ra3̂ .49999 77.8b632.69001 : 78.137
.- 32.7-- , 79.i-9e32.88999 79.O3332 .8900 L- ; !9
33.1 .••'&C.6501 33.29 82.CV*
J3.^9 S2.26733.%900i i>2.30>33.49999 , . ; ^2
33.3VC01 b3• 33.9 e3
3^.08999
-
- 78 -
CMa:
Nor
03CM
CO3
oECO
S-o
01
o-t->ra3cr
£=o0101aia>(Ua:
icnCM
a>-Qro
N:rC3
oen
C3
01
3crLU
CMo;
CO
ra3cr
LlJ
CMCXL
3cr
LU
01co
ror—CU
C£.
CM
cn
CM
I
LO
CO •
ii >— an
CO
r- OTcn o
co
CO
CM> CM
ra (U
o o
cn
co
n co
r— CO•— CM
a
01
o01
-pra i
C iCU i4->-
ro
O
a.
coen
in
co• iiu
cn cor— CM
COE
O01
01
CD>CU
•r- -M -r-
ra •!-
'CID i
ra.a
- os_
oocn
LO
LOco
• coCM COu
cncn
LO
10• t
coiII
CO
CO r—
£L ,o 4->
•r- ^ -r-•»-> ro •—ra • .̂̂ O-(-> . S-•=C iec CL
ra•(->ra
T3
+Jccu
•I—(J
If-301c
-
- 79 -
2.10 September. 1977
11.7 GHz attenuation data may have been influenced slightly by
daily spacecraft shutdowns for eclipse. Where possible these were
ignored in the statistical calculations. For the same reason the
IT.7 GHz isolation data are questionable.
-
- 80 -
Table 2.10-1.
Key parameters for the month of September, 1977.
1. Rain Data
VPI&SU Accumulation, 46.61 mm
USWS Accumulation, 104.90 mm
Peak VPI&SU Rate, 60.80 mm/hr
Percent of monthly accumulation at
R > 10 mm/hr, 32.20% R > 20 mm/hr, 25.58% R > 50 mm/hr, 6.75%
R > 30 mm/hr, 19.97% R > 40 mm/hr, 12.39%
2. Signal Data
Channel Monthly Mean Maximum Fade, Minimum IsolationCo Signal, dBm dB While in Phaselock, dB
14.48
22.52
15.51
11.7
19.04V
19.04H
28.56
-81.63
-85.42
-87.01
-81.51
15.38
25.41
24.59
50.81
-
- 81 -
en
orLUCQ
LUI-Q_LU
GO
00
08O8
CO
LU
X
«=£c£
LU8
QO8
-\-
UD
00 — •cr
-
- 82 -
MZCCD
M M
CD CD
CD OOr—I CXJ
cnT—I
m
a.LU
00
PQQ
D O
-
- 83 -ORIGINAL PAGE IS< > P P O O R QUALITY
RAIN
0»«.1»
»•
2•3
ACTS
O»1»••
- 2*3
AV19
12
6.T
a
7•8•9
1C 9
10
13
AC28
•0fc.
' • - "2 - - - ; .• •3•
~ ••4- "5*•-
'• »
' • •6
» .
»
• '• *; »•
v *•
• .
' 7»•
8
5' ^»
-- •"•
10»*11••
12
1*•
In-•
15*lo»
•»
17^*
181920
PER
18.04^913.56310.2028.1035.6G84-.6243.̂ 512.743L.5501.3651.268O.B660.507O.5G60.407O.3590.3180.259O.1790.1740.1680.1590.1520.1*90.14-10.1330.1320.1310.1260.1250.1240.1160.1120.1100.1G50.1040.0980.095O.C910.0900.088o.oai0.0800.0780.0750.0740.0730.0710.067O.C640.061O.060O.C59O.056
Table 2.10-2. Attenuation and rain ratepercent-of-time data forSeptember, 1977.
-
- 84 -ORIGINAL PAGE IS
POOR QUALITY!
RAIN
14
1920
2223
ACTS
10'•. »,-. »
.' •11
r-25-,263031,32333536
•> ••
3738
39
4546
_475O5152535a6O
1314
15
AV19
;~Il"
»
12• - «
13
AC28 PER
•15
17
1820
2
22
232425
• •- • '21•
22»•
»
232^
*
252t>27•
" • "28*
»
293031•
32•
3537*O
*.
•^2*3
45
474350
0.0540.0520.0510.0500.0460.0450.0440.0430.0420.038O.Q350.0340.0320.0310.0300.0290.0270.0250.0240.0230.0220.0210.0200.0190.0170.0160.0i50.0140.0120.0100.0090.0080.006O.OC50.0030.0020.0010.000
Table 2.10-2 (continued). Attenuation and rain ratepercent-of-time data forSeptember, 1977.
-
- 85 -
14.47999/ 15.27999
2J.0799923.26
23.47999
21-. 0924.27999
PERCENT
. p17.2*999 r
. IV ? Vi O* A * • 4- O r>18.07999 r
iV
20.0799920*27999
•> •-. -/ 1
i •':."$' --21.G7V99 |
21.26 -"21.47999
.L̂O O
22. 2b >fi-3-1*-i i , ?a . i l /
Table 2.10-3. Percentage of time that 11.7 GHzisolation was less than theindicated value for September,1977.
-
- 86 -
1CTS2a.2a25.«i9
. • - • • 25..-«-8..-•:• • 25.4*
25.65251.08999•"--- 25.8625.8399926.0800126.08999/ 26.092fc. 27999sv--
: 26.28
-^ 26.49••-.- 26.6-8 '
^•T 26. a a *99-26.6900127.07999
S 27.G80C127.27999
i 27. 2d':,V~ 27.29
4.337
4.716*«•. 7434.851
4.91o4*.996
7.8978.07^.
20.825
20.990411.324
21.653.21.77^32.07933.4t>d3^.813
ORIGINAL PAGE ISOF POOR QUALITY
27.^900 127. 6d
' : ^ , - 27. 8 d': 27.86001
27. d 8 99 9: 28.07999
28.09\ 28.27999
•i 28.28
- 28. *62to.^9
28.4900128. od
28.8828.88999
•28.8900129.0799929.0&V99
29.09- 29.28
- 29.29
29.49
3t>.o:>736.967
36.57639.^0039.-t6^40.34o^1.577*»2.af&1-2.435
44.7^945.995
•^6.833
48.38549. /6-/
Table 2.10-3 (continued). Percentage of time that 11.7 GHzisolation was less than theindicated value for September,1977.
-
- 87 -
•ICTS . - '• ' • : ' •29.0c»999_29.69001 - . -,29.88999 31.89729.89U01 .-3^.6^-230.08999 34.68-*
,*:,- 30.09-
c^ w »*»** * * * i * » • - . « «>30.69001 . 53.622^30.69999 ^i?-6*130.88999 :>i>*7I:)iC.69001 36.527
• :fc----3l.09 • - - : 37..-̂ /5• '̂- 3ll29; 57.79831.29999 57.883
-"•-—- 31.49 - ' 38.25231.^9001 ii8*3^431.49999 58.69031.00999 II'^J-3i.69001 39..S6-231.88999 3?,-2^^31.89001 "•^•?2«;:32.08999 Ou.u9d
sv. i , 32.09 oQ.517-ii£: 32.1 6C.640
r-?:-.-:J2.zy ' . 0}-!£a32.29999 ; 6i»7l2
- 62.909321^9999 *|»9U32.08999 . 63-^5^33.^89
•' •-• ' -. 33.1 65.82j-"---33.29 -o7.*S533.29999 6?.^tiO33.30001 67.^-87... \i3.^9. 68.^8933.49O01 ^**^-?1^33.50001 08.95133.68999 ^2***^?33.69001 . ^•28,3
- 33.7 ^k"^3o33.88999 -I«*iC"233.890O1 .t9-^ii-'
33.9 ^-5?9- ' •- ' " -'34-.09- Z^.oOo
TabU Z.,0-3 (continued), ^-entage^f tj« ttjt 11.7 GHz
indicated value for September,.1977.
-
- 88 -
COD:
N
VOLT)
COCM
cn
s-OJ
CU4->CLcuto
O
CU
COco
4->033CPCU
COCOcui.cncu
IO
CM
CU
03
N
to
O
cn
N
CJ3
(T33CT
CMcc
03
cr
CM
crLU
-M03
CUCtL
Lf>
CM
CO •
II £2
COCM
CM
CO
CM ' —"CMg>
O-CO
CnO V
"~ COc:O S-
o
en
CM
cnID
co co10
VOcn
cn
*\r>•̂co
CMLO
CMcn
*CMCM
•O•sS-OO
i— >03 CU
Cr1"
«£
rv o
C -QO O
cncn
CM
LOi— O
• unCM -_^
coII CM
cncn
CM
CMO
03 r— >(J 03 CUCO 3 r—
crS= OJ >,O -M
03 -r-
C •— 03CU i—
-
- 89 -
2.11 October, 1977
All attenuation data are valid.
-
-90 -
Table 2.11-1.
Key parameters for the month of October, 1977.
1. Rain Data
VPI&SU Accumulation, 59.77 mm
USWS Accumulation, 159.77 mm
Peak VPI&SU Rate, 79.45 mm/hr
Percent of monthly accumulation at
R > 10 mm/hr, 33.73% R > 20 mm/hr, 21.74%
R > 30 mm/hr, 15.00% R > 40 mm/hr, 12.04%
R > 50 mm/hr, 7.53%
.Channel
11.7
19.04V
19.04H
28.56
Monthly Mean
Co Signal, dBM
-81.90
-87.71
-88.57
-85.24
2. Signal Data
Maximum Fade,
dB
27.08
28.08
Minimum Isolation
While in Phaselock, dB
19.88
7.91
36.16 17.72
-
- 91 -
I —O7>r- 1
o:LUOQ
S , o °CD
-
- 92 -
M31CI3
px.
-i — |rH
a
ĈOCOt__>ooCQ
COQ
LU
XLU
OLr~"_r*-J
LUir—
LH~̂
^-ir—
LU
1̂ ^
t—
U_O
OO
%_/ '
rHM Mnz 3: a:CJ3 CD LU
COen co orH CM H-
oC3
0 < .
-
- 93 -ORIGINAL PAGE ISOF POOR QUALITY
RAIN ACTS
0»
1*2»
3*4
:/5:i.
•:-.
. 6
.- • 7»'
89
id
ii12
•'1314. ••
15
16
1819
; 20
2123
a- 25,V: -'. "26
28
AV19 AC28
"' 6 ' •."" '•" ' .-o' » • ' " ' • • •
i . . • '-. - ... • • i2 .' \- . .
*
*
29-
m-•3*••*•- •»4»• •
• -
5• . . . »
6• ' '• .
7»
• ..8#•
9' .»v-
• • •
*-
10
f11
».12
^,
13*
»
*
14-15
»*.*
16- . •
. • . " »;.
17•
- P E R ;. v
"16.52914.3549.2596.0015.1063.8242.4491.8631.5051.2270.9750.6770.5420.3860.3790.3490.3330.2740.2250.1950.1810.1630.1300.1280.1140.1030.0970.091 '0.0850.083
- . 0.0810.0300.0780.0760.0730.0670.0620.0570.0540.0530.0470.0450.0440.0430.0410.0400.0330.0360.0350.0320.0300.0290.0230.027
Table 2.11-2. Attenuation and rain ratepercent-of-time data forOctober, 1977.
-
- 94 -ORIGINAL PAGE ISOF POOR QUALITY
RAIN
293031363739
•>
4245
»
4748495559606171757779
ACTS
1027
A VI9
" " »•
.". 6.;-• -
7
ia
11121314161713
AC28
18
19
20
21
222324252628323436
PER
0.0260.0250.0240.0220.0210.0190.0180.0170.0160.0150.0130.0120.0110.0100.0090.0080.0070.0060.0040.0030.0020.001o.ooo
Table 2.11-2 (continued). Attenuation and rain ratepercent-of-time data forOctober, 1977.
-
- 95 -
ICTS ; PERCENT
•19.88 0*002,21.48 0.00422.09 , 0.006
22.27999 0.00323.29 0.010
23.89001 0.01224.49 0.014
24.63999 0.01625.29 0.018
-^; 26.09 -• 0.02426.27999 0.037;
26.29 0.03926,47999 0.303
26.49 0.30926.49001 0.42526.83999 0.43326.89001 0.44927.08999 0.512
27.09 0.51827.27999 0.520
27.29 1.02227.49001 1.02427.68999 1.10927.69001 1.24327.88999 1.25327.89001 1.274.28.08001 1.27328.08999 „ 1.456
28.09 1.46328.28 1.67228.29 1.67423.48 2.01728.49 2.468
28.49001 2.48828.6899V 2.53528.69001 2.543
28.88 2.56028.88999 2.94326.69001 2.95029.08999 2.952
29.09 2.97629.29 3.91029.49 4.315
29.49001 4.41429.68999 6.75029.69001 6.76229.88999 6.76629.89001 7.55130.08999 7.593
30.09 7.6C130.29 9.551
- 30.49 11.05730.49999 11.865
Table 2.11-3. Percentage of time that 11.7 GHz isolationwas less than the indicated value forOctober, 1977.
-
- 96 -
ORIGINAL PAGE ISOF POOR QUALITY
ICTS30,6399930.6900130.8900131.08999
31.0931.29
31.2999931.49
31.6899931.88999^31.8900132.08999
32.0V32.1
32.2932 .49
32.4999932.6399932.69001
32.732.8899932.89001
32.933.08999
33.0933.29
33.2999933 .49
33.490C133.5000133.6899933.6900133.69999
33.7'33.8899933.89001
33.934-.0934.1
34.1000134.29
34.3000134.49
34.4900134.499993,4.6899934.6900134.8399934.89001
34.9" -•'- 35 . 09
35.135.29
35.2999935.3UOU1
PERCENT12.64313.49214.15714.71116.70217.17117.49618.15619.57220.18821.29921.30721.83722.75523.06624.45325.35525.61326.09527.82623.19328.92929.71729.76230.67633.23933.90534.02534.97635.38638.1234O.25341.60641.67841.71442.90342.95343.74743.94444.21746.95347.11143.85251.60352.57052.72454.14054.29254.80055.41456.82956.90559.72460.64060.695
Table 2.11-3 (continued). Percentage of time that 11,7 GHz isolationwas less than the indicated value forOctober, 1977.
-
- 97 -
CT>
O)
OO
o
O)
s_o
toCo
ro3CTai
tot/j(LI
cncu
CM
cu
N
CI3
toLO
COC\J
Mn;CJ3
O•
O^r-~
N
r^,—1
r~
CMo;
to
C0
•̂ -̂ro3cr
LU
CMct:
2: •
do*^+-*rocrUJ
CMo;
toz
0•^~-4-J
ro3CT
LU
Q.•n-C"
(/>CO
^J(U
^—0)rv
_
Q
CMCT*LOr—
Cj-1 •, s
co cn• o
CM*"CM
II LO«
t— 1 1 —
LOto
toCMCO
O1 i —
cno or**» ^™
• .*
cn
1-4 CM* —
*~-+,
(—^ rf
^^0^C
• Vo•— «=ccn0 v
COc0 i-
ol-l •+-
o
O1^
*COCTi O
• CO
ii 'a:
^^
,r—
*,—CM O
r—II GC.
COLO
•
CO
*COEf>. IO
• r*^- •ii o:
•=£
to"oj
r— >ro cu3 i—CTcu >>•P T-
tO < —•r™
rv< r*>ro
C -QO 0
s~•=£. Q-
LO
CO
*r—
•COCM
II •
^ co"i— CM
«
CM
j.
coCM
•CM
O1) r***
•"̂ o-T
5 £\ /\ /\ /\/v
A/ \/ \/ \/ \/ \/ \
/ \f \
cnc to
r— 'cijro i— >u ro cutO 3 r—
crc cu >,O 4->
•r— 4-i 'r—-M ro i—ro -r-3 -*™^ oc i— roCU i — ' 0-M i-«C coi— CM
\ '/\ /\ /\ /VA/ \/ \/ \/ \/ \/ \
/ \to
LOC\J
r-^f*^
II CO
^-— ̂ s *̂*.
cn •—
o ro cuto 3 < —
crC O) >>0 4->
•r— +-> -I—+-> ro f—ro -r-3 ' — --Qc C7i roo> i— JD
-(-> — - O•«-> s-
1̂ ^
LO,
to toLO
•II
ro 2CM •
LO
•
co
LOoto co
LOII
*••"••* r™"CO r—CM
ec" *
cnC 1/1
c— d)tO r— >O « ,O 4->•r- +-> •(-• ro i—ro •«-3 *^~^ f"lc co roO) CM -Q
-(-> — ' O4-> . i.
E Q-
cu cu•M toc a.
>, oX) O)
TJ cn01 C-U T-
ro s-T3 3
ro c> o•r- +J
roto s--i_> curo Q.a o
-
- 98 -
2.12 November. 1977
19 GHz data are questionable because of an intermittent failure in
the local oscillator.
-
- 99 -
Table 2.12-1.
Key parameters for the month of November, 1977.
1. Rain Data
VPI&SU Accumulation, 94.79 mm
USWS Accumulation, 188.21 mm
Peak VPI&SU Rate, 67.78 mm/hr
Percent of monthly accumulation at
R > 10 mm/hr, 2637% R > 20 mm/hr, 8.69% R > 50 mm/hr, 3.66%
R > 30 mm/hr, 4.49% R > 40 mm/hr, 3.66%
2. Signal Data
Channel Monthly Mean Maximum Fade, Minimum IsolationCo Signal, dBM dB While in Phaselock, dB
11.87
8.91
18.72
11.7
19.04V
19 04H1 3 • V/~l 1
28.56
-81.31
-86.37
-89 20\J3 • L-\J
-83.65
30.96
26.60
32.78
-
- 100 -
i —CDC3CO
CQSIUJ
O«=co£
CTl
O)
GOGO
GOOQ
-- CD
CDCD CD
CD
-
- 101 -
CD* n
M M M OC.=z= rc zn ujCD CD CD CQ
Sr*«. o") oo uj
- i— 1 OJ >i-H 01— H • 2T
-
RAIN ACTS
•
-
- 103 -
RAIN
1617
:'Vl819-2021
-2223
ACTS AV19
25.:1262?29
3 13338526166SO85
8
911131720212430
2526
AC28
16
17•
13»
19
20
212225273132
PER
0.0490.0430.0420.0350.0340.0280.0260.0250.0230.0210*0200.0160.0140.0120.0110.0100.0090.0080.0070.0060.0050.0030.0020.0010.000
Table 2.12-2 (continued). Attenuation and rain ratepercent-of-time data forNovember, 1977.
-
- 104 -PAGEJS
POOR QUALITY
I GTS
11.8712.2712.6716.0717.4821.2322.6822. 3d
23.07999^23.6823.6824-.2924.6825.2925.48
25.8900126.0926.68
^26.89001 ;27.48 l27.49!
27.4900127.6899927.69001
27.8828.2928.49
28.6899929.0899V
29.0929.2929 . 49
29.4900129.6899929.3900130.G8999
30.0930.2930.49
30.4900130.6899930.6900130.8899930.8900131.08999
31.0931.29
31.2999931.49
31.6899931.6900131.889993-1.89001
PERCENT
0.0030.0060.0090.0120.0140.0170.0200.0290.0330.0840.1100.1650.3610.4500.4940.5170.5570.6060.6470.6550.6750.6780.7420.7710.8921.0131.1571.6571.6601.6971.9652.1732.1762.2142.4452.4472.9122.0973.3393.3634.4825.0485.0515.5305.6026.9829.2799.288
10.96711.00212.45413.08615.554
Table 2.12-3. Percentage of time that 11.7 GHz isolationwas less than the indicated value forNovember, 1977.
-
- 105 -
CM
tvl
CD
LO
COCM
en
a)
O)
o
c:o
s-o
toco-M(O
CO
toto
(Ua:
iCM
CM
O)
(O
N
CD
O*cn
NCD
c.o
(O3cr
LU
CM
co
crLU
CMo:
£=O
crLU
coco
ro
O)
OO
COCO
cn
o —co* o
LO i—n LO cn• o
LO
co
CO*o
cn o
Lf)
coLO
cnO V
coc.o s-
o
en
CPi
CM
COen
en coCM o
to
r— >ra OJ
cr""«£
ry nra
C J2O O
cn
Lf)
CM
COLO
coi— CM
cn
ro i—(_) rato 3
crC OJo
-»-> ro i—ro • ^ .+->
cnc to
ra i— >O ra ra i—CO •!-
c cn ra r— JD
4-> . Oj ^ r
O ro OJCO 3 r—
crC QJ >,O +J
43 ra î -cQ -r-
C CO (OCU CM J3+J--' O-(-> - t-
-
- 106 -
2.13 December. 1977
11.7 GHz data were invalidated by repeated spacecraft maneuvers
for which we were not provided timely tracking information.
-
- 107 -
Table 2.13-1.
Key parameters for the month of December, 1977.
1. Rain Data
VPI&SU Accumulation, 33.13 mm
USWS Accumulation, 46.74 mm
Peak VPI&SU Rate, 15.98 mm/hr
Percent of monthly accumulation at
R > 10 mm/hr, 2.35% R > 20 mm/hr, 0% R > 50 mm/hr, 0%
R > 30 mm/hr, 0% R > 40 mm/hr, 0%
2. Signal Data
Channel Monthly Mean Maximum Fade, Minimum IsolationCo Signal, dBM dB While in Phaselock, dB
10.27*
5.11
11.7
19.04V
19.04H
28.56
-81.74
-87.57
-92.74
-83.67
43.31*
5.37
8.14
29.05 15.11
* Data were invalidated by spacecraft maneuvers.
-
- 108 -
en
a;LUCQs:LiJO
c/ooo
CJooPQ
CO
XUJ
4- oo
oe:
f—«=c
-
- 109 -
M N Nzn 3: IEt n t j~i t n
I— CD OO- i—I OJ
a o
LUCO2LLIOLU
o -aQ f—
i- >o c
(/) 0)o &. •
•i- 01 104J 2 S.(/I -P Z 3to tS i. (O(O O S-3 M- OC O) (O Q.«=C O VI
CVJI
OO
C\J
0)
3cn
-
- no - ORIGINAL PAGE ISOF POOR QUALITY
ACTS AV19 AC28 PER
ijlV.p'
;;:)';. 2.
6
7
910
11
1213
1516
5
7
i^.jg-v,:.123
: »' - . 4.." • '
5' -...
6,7», -a
.. • *. . -9
10».».
• .11
».»-»
12
13...
14..-••,
15».» -
16,
17»• -^,
18.,.. -.
19202122
»2324. ,25.
25.51918.74314.84311.72211.2699.3837.546
, 6.4695.7084.9364.2403.075
.2 .906i 2.259^2.084
1.6951.5321 .4271.3211.2651.2251.1231.1060.9880.7740 .7400.6620.6220.612
--' 0.5990.4820 .45 20.4300.4110.3370.3310.2730.2420.2410.2350.2340.2320.2210.2030.1980.1780.1520.1200.0890.0870.0690.0510.0410.037
Table 2.13-2. Attenuation and rain ratepercent-of-time data forDecember, 1977. Data for11.7 GHz were invalidatedby spacecraft maneuvers.
-
- Ill -
RAIN
' 81015
ACTS
33
43
AV19 AC28 PER
2627
2829' • *
»
31
0.0290.0170.0140.0120.0100.0090.0020.000
Table 2.13-2 (continued). Attenuation and rain ratepercent-of-time data forDecember, 1977. Data for11.7 GHz were invalidatedby spacecraft maneuvers.
-
- 112 -
ICTS
1313
20= 20
•l'?P22
,,23
232424
2425
•-2525
•."•"•- .
2526
.26
26
262627
2727272728
• ' ' ~-?*z10.2710.8712.2712.67.47001.8699914.07
-.4699914.8715.27
;• 15.6716.2717.0717.8718.0718.6719.28.07999.08001.6399921.68
.279990799923.4889001.27999.4900124.68".88959V;.07999 U.47999.49001 \25.88.88999.08999.2799926.29.6699926.88.asooi.88999.0899927.0927.2927. 4927.63.68999.69001.88999.89001.03999 "•-2a.0928.49
PERCENT
0.002•0.0040.0110.0120.1870.1890.2970.3010.371
iO.379r0.4790.5500.5870.6210.6230.6530.7290.7320.8050.8470.909O.9500.9531.1051.2041.2Q61.2491.6791.6SO1.7491.9282.0982.1792.2062.3033.2403.3823.4083.9974.0594.0684.2704.2774.6964.7675.2446.1116.2866.5206.9427.5387.6098.610
Table 2.13-3. Percentage of time that 11.7 GHz isolationwas less than the indicated value forDecember, 1977.
-
- 113 -
ORIGINAL PAGE ISOF POOR QUALITY
I CIS28.4900128.6899928.6900128.8899928.89001
29.0929.2929.49
29.4-9001.,29.6899929.6900129.8899929.89001
30.09:" 30.2930.49
30.4900130.6899930.6900130.8899930.89001
31.0931.2931.49
31.68999-.31.6900131.8899931.8900132.08999
32.0932.132.29
32.2999932 .49
32.4900132.6899932.6900132.8899932.39001
32.933.0933.133.2933.4V
33.4900133.4999933.6899933.6999933.8899933.89001
33 .934.0934.2934.49
34.68999
PERCENT8.7879.901
; 10.536: 10.64210.78211.25813.60015.186
: 15.430I 15.45715.56516.15616.81522.33025.92126.35426.83728.20428.40228.40432.12535.30035.84743.41743.80448.14548.63551.03551.C3653.30853.97359.15159.59461.05561.90763.02865.25065.55466.02166.19167.82269.27470.11271.74574.69374.76974.95775.93176.04376.678
! 77.18078.51031.46781.59181.814
Table 2.13-3 (continued). Percentage of time that 11.7 GHz isolationwas less than the indicated value forDecember, 1977.
-
- 114 -
PERCENT32.09 17.3832.1 17.392
. ' .§8:21120.711
32.68999 21.29702.69001 22.792, 32.88999 23.14732.89001 25.514-::. 32.9 25.517
-v.̂ .v33.09 26.769• ,J3.1 26.937
/: 33.29 28.974:--, 33.49 30.11133.49001 30.47233.50001 30.47533.63999 32.22433.69001 32.91733.83999 33.75433.89001 34.562
33.9 34.78134.09 36.09234.1 36.10634.29 37.636
- 34.49 38.61434.49001 38.62634.66999 42.31134.69001 43.789_ . 34.7 43.89634.88999 43.95134.89001 46.791
, 34.9 46.802*•••• 35.09 48.765
- -9 49.521
52.64735.50001 52.65035.68999 53.00235.09001 53.937,c n35.7 53.94035.89001 56.370
• :_, 3̂5. 9 56.39036.08999 56.485
36.09 58.370•̂ 36.1 . 58.39636.10C01 58.402-• |6.29 62.40836.29999 62.43936.30001 621465
36.49 62.65V36.49001 63.031-36.50001 63.034
Table 2 13-3 (continued). Percentage of time that 11.7 GHz isolationwas less than the indicated value forDecember, 1977.
-
- 115 -
I—r»~cr>
s_
O 03 0)tO 3 e—
crc~ CO >^O -M•i- -(-> -r-+J 03 i—n3 "̂ ~3^->J3c~ ^— rQCU r— ^34-> 04-> S-«=xO 03 CUtO 3 r—
CTC CU >,O -I-1•r- -t-> -i--M 03 i —03 -r-3 ^^* *"^c cn 03CU r— JD-i i ̂ ^^ e34-* t-=t «=C Q-
ai— i
Q1— H
*
enc tor^ 'ai03 i— >O (TJ CUto 3 • —
crc cu >,O -M
4J 03 r^O3 "r~3--^-aC CO 03CD CM -Q-M.— ' 0+J , J_
u03Q.to
-aa>03-o
03
03 C
C •
-
- 116 -
2.14 January. 1978
All data are valid. We