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Eighth General Assembly of the ILRSOctober 11, 2002
Washington, D.C.
Presentation Material
Introductory Remarks
Science Coordinator Report
SCIE
NCE
CHAL
LENG
ES F
OR S
LRSC
IENC
E CH
ALLE
NGES
FOR
SLR
Stev
e Kl
osko
Ray
theo
n/G
SFC
Raytheon
MAJ
OR S
CIEN
CE C
ONTR
IBUT
IONS
MAJ
OR S
CIEN
CE C
ONTR
IBUT
IONS
Scie
nce
Prod
ucts
Glo
bal g
ravi
ty m
odel
sTe
mpo
ral g
ravi
tych
ange
sD
ynam
ic ti
des
Luna
r sci
ence
Fund
amen
tal p
hysi
cs a
ndte
sts
of re
lativ
ityEa
rth s
cale
: GM
….
Appl
icat
ions
GPS
inde
pend
ent
orbi
t/mod
el a
sses
smen
t
Altim
eter
cal
ibra
tion
Prec
ise
orbi
tde
term
inat
ion
Fail-
safe
pre
cisi
ontra
ckin
g
….
GEOD
ETIC
MON
ITOR
ING
OF E
ARTH
GEOD
ETIC
MON
ITOR
ING
OF E
ARTH
Smal
l sca
leco
nvec
tion,
man
tle rh
eolo
gy
Gra
vity
ano
m-
alie
s, ic
e sh
eet
load
ing
Oce
an c
ircul
atio
n,oc
ean
win
din
tera
ctio
n
Load
ing,
bar
o-m
etric
oce
anre
spon
se
Topo
grap
hic
Map
ping
Lith
osph
ere-
man
tle c
oupl
ing,
crus
tal c
oolin
g
Stra
in in
sei
smic
zone
s, te
cton
ics,
subs
iden
ce,
mou
ntai
n bu
ildin
g
Oce
an lo
adin
g,no
n-tid
alde
form
atio
n
Atm
osph
eric
load
ing
Cru
stal
Mot
ions
Cor
e-m
antle
coup
ling/
reso
n-an
ce, t
ies
toge
omag
netis
m
Secu
lar c
hang
esdu
e to
deg
lac-
iatio
n &
lon
gte
rm p
roce
sses
Oce
an m
omen
tum
,bo
ttom
fric
tion,
ice
shee
t mas
sba
lanc
e
Atm
osph
eric
angu
lar
mom
entu
m, a
ir-oc
ean
coup
ling
Earth
Rot
atio
n&
Pola
r Mot
ion
Inel
astic
ity o
f sol
idEa
rthTi
dal l
oadi
ng a
ndlit
hosp
here
stre
ngth
Oce
an ti
des,
oce
anci
rcul
atio
n,Ea
rth/M
oon
syst
em
Ther
mal
/gra
vity
forc
es m
ass
disp
lace
men
ts
Tide
s
Man
tle rh
eolo
gy,
conv
ectio
n, c
ore-
man
tle b
ound
ary
Lith
osph
ere
stre
ngth
, PG
R,
isos
tatic
beh
avio
r
Tem
pora
l mon
itorin
g of
mas
sre
dist
ribut
ion
thro
ugho
ut E
arth
sys
tem
as fo
rm o
f rem
ote
sens
ing
Gra
vity
Fie
ld
Earth
Inte
rior
Cru
stH
ydro
sphe
re/
Cry
osph
ere
Atm
osph
ere
MAJ
OR C
HALL
ENGE
SM
AJOR
CHA
LLEN
GES
Com
plem
entin
g G
PS a
ctiv
ities
Low
erin
g op
erat
ing
cost
s
Net
wor
k de
nsifi
catio
n
Leve
ragi
ng, a
ddin
g va
lue
to n
early
40
year
track
ing
hist
ory
Obt
aini
ng in
crea
sed
fund
ing
for S
LR/L
LR-b
ased
scie
nce
Com
plem
enti
ng G
PS
NEW
TEC
HNOL
OGIE
SNE
W T
ECHN
OLOG
IES
mm
-leve
l acc
urac
y
Fully
aut
omat
ed lo
w p
ower
sys
tem
s
Inte
rpla
neta
ry tr
acki
ng, l
aser
tran
spon
ders
Dua
l, m
ulti-
frequ
ency
cap
abilit
ies
Lase
r alti
met
ry
MM
LEVE
L SIG
NALS
MM
LEVE
L SIG
NALS
Envi
ronm
enta
l Effe
cts
grou
nd w
ater
cha
nges
frost
hea
ve
ocea
n lo
adin
g
atm
osph
eric
load
ing
win
d st
ress
ther
mal
exp
ansi
on/c
ontra
ctio
n
Network Reports
ILR
S E
ight
h G
ener
al A
ssem
bly
EU
RO
LA
S R
epor
t
Wer
ner
Gur
tner
Was
hing
ton
D.C
. O
ctob
er 1
1, 2
002
EU
RO
LA
S W
orks
hop
Det
ectin
g an
d el
imin
atin
g er
rors
in th
e E
UR
OL
AS
netw
ork
Mar
ch 2
002,
11-
13H
erst
mon
ceux
→ R
epor
t av
aila
ble
on I
LR
S W
eb s
ite:
ILR
S H
ome
> Pu
blic
atio
ns >
Spe
cial
Rep
orts
> E
UR
OL
AS
Wor
ksho
p
Sum
mar
y
•In
ter-
com
pari
son
of p
erfo
rman
ce o
f tim
e in
terv
alco
unte
rs•
Inte
r-co
mpa
riso
n of
sta
tion
baro
met
ers
•Sp
read
ing
best
pra
ctic
e fo
r op
erat
iona
l con
ditio
ns,
proc
edur
es a
nd m
onito
ring
of
inst
rum
ents
•M
axim
isat
ion
of d
ata
qual
ity b
y po
st-p
ass
chec
king
at s
tatio
ns•
Enc
oura
ge in
ter-
stat
ion
visi
ts•
Enc
oura
ge u
se o
f N
RT
dis
play
and
TB
ser
vice
•N
eed
for
accu
racy
in lo
cal s
ite ti
es
CA
GL
IAR
I ST
AT
ION
New
Updat
es (
bec
ause
of
bre
akdow
ns)
:Tel
esco
pe
Enco
der
s &
Gea
rsTel
esco
pe
Guid
e H
ardw
are
& S
oft
war
eD
om
e Aper
ture
Sys
tem
Saf
ety
Provi
sions
Rest
art
ing
Of
Th
e O
bse
rvati
on
s: O
cto
ber
20
02
(up t
o 6
Sat
ellit
es/d
ay,
5 d
ays/
wee
k, L
EO
+La
geo
s+G
LON
ASS)
Oper
atin
g D
ifficu
ltie
s:Tec
hnic
al &
Obse
rvat
ions
S
taff
too s
mal
l:3 R
esea
rcher
s an
d4 u
nsk
illed
Tec
hnic
ians,
invo
lved
par
t-tim
e in
SLR
Cut
dow
n o
n t
he
R
esea
rch B
udget
EU
RO
LA
S/IL
RS:
New
sta
tion
•L
viv
in U
krai
ne
•1
m C
asse
grai
n T
eles
cope
•T
/R s
witc
h: R
otat
ing
mir
ror
•N
D:Y
AG
Las
er, 1
50 p
s, 1
30 m
J
•L
ow a
ltitu
de a
nd L
AG
EO
S sa
telli
tes
•N
o ro
utin
e da
ta s
ubm
issi
on y
et
Sixt
h Fr
amew
ork
Prog
ram
me
•E
urop
ean
Com
mun
ity f
or R
esea
rch,
Tec
hnol
ogic
al D
evel
opm
ent a
ndD
emon
stra
tion
•In
stru
men
ts f
or f
undi
ng:
–"I
nteg
rate
d Pr
ojec
ts"
–"N
etw
orks
of
Exc
elle
nce"
•In
vita
tion
to s
ubm
it "E
xpre
ssio
ns o
fIn
tere
st"
befo
re J
une
7, 2
002
EU
RO
LA
S C
AL
Net
Eur
opea
n L
aser
Ran
ging
Pre
cise
Cal
ibra
tion
and
Orb
it E
valu
atio
nN
etw
ork
•D
raft
by
–W
olfg
ang
Schl
üter
, BK
G, W
ettz
ell
–W
erne
r G
urtn
er, A
IUB
, Zim
mer
wal
d
–K
arel
Ham
al, P
ragu
e
•O
rigi
nally
initi
ated
by
–K
arel
Ham
al a
nd I
van
Proc
hask
a, P
ragu
e, s
hort
ly d
iscu
ssed
inN
ice,
Apr
il 20
02
Goa
l of
EU
RO
LA
S C
AL
Net
•Im
prov
e th
e E
urop
ean
SLR
cap
abili
ty–
to
esta
blis
h a
stat
e-of
-the
-art
ca
libra
tion
and
orbi
t eva
luat
ion
netw
ork
–fo
r al
l fu
ture
Sa
telli
te
Mis
sion
s (G
AL
ILE
O,
EN
VIS
AT
, GO
CE
)
–re
late
d to
res
earc
h in
glo
bal c
hang
e
–w
ith t
he u
nder
lyin
g an
d vi
tal
need
for
a l
ong-
term
con
sist
ent r
efer
ence
fra
me.
Con
trib
utio
ns to
FP6
•Su
ppor
t GA
LIL
EO
–In
depe
nden
t eva
luat
ion
of th
e sa
telli
te o
rbits
–Su
ppor
t int
egra
tion
of G
AL
ILE
O in
to e
xist
ing
refe
renc
e fr
ame
–C
ombi
natio
n w
ith o
ther
geo
detic
tech
niqu
es
•Su
ppor
t Ear
th W
atch
Pro
ject
s sa
telli
tes
–In
depe
nden
t con
trol
and
impr
oved
acc
urac
y of
sate
llite
orb
its–
Fails
afe
back
up m
eans
for
orb
it de
term
inat
ion
–C
alib
ratio
n te
st b
ed f
or th
e sa
telli
te a
ltim
eter
s.
New
EU
RO
LA
S Pr
esid
ent:
Gui
sepp
e B
ianc
o, A
SI, M
ater
a
to r
epla
ce
Wer
ner
Gur
tner
, AIU
B, B
erne
The WPLTN meeting_Report to General Assembly11 October 2002
1. Matter of regret: Missing China and Russia delegatesWPLTN express the matter of regret for missing Chinese and Russia delegates by visa problemnot only because we lost more than 2/3 people attendance of WPLTN network in the workshopbut also we lost rare opportunity to exchange information for many solved-for problems throughface-to-face communication in the week.
2. National Report Briefing Australia: National Mapping Division of Geoscience Australia keeps running Yaragadee andMt.Stromlo as the highest productivity and quality stations in ILRS network. EOS uses 10% ofMt.Stromlo time for research and development including such as LLR and debris observationusing extremely high power laser.Japan: See attached report.China: See attached reportSaudi: Successful re-commission of SALRO data yield since 2001(see attached report and figures by courtesy of KACST)Russia: No report in this meetingIndia: ISRO is trying to acquire station for associated space program
3. Overall Strategic issuesAs shown statistics in CB report for last years, there has been more stations coming to high rankfrom data yield point of view. However, number of stations needs more effort for quality of theirproducing data. Each country (with no exception i.e., including Australia) has own fundingproblems to face on how to continue stations and operation, and how to upgrade the observationcapability. Some of stations should be maintained/upgraded as core stations strategically inWPLTN region.
4. Other actionsTo improve communication with CB for lack of information regarding sitelog etc.New executives installed as attached sheet.
Japanese Network
CRL: Two stations Miura, Tateyama of four Keystone stations were dismantled in 2001. Laserand electronics of those stations are moved and integrated to Koganei 1.5m telescope fortracking campaign LRE and ADEOS2.HOD (Hydrographic and Oceanographic Department of Japan Coast Guard): Simosato hasbeen better routine observation than last few years. It will achieve in this month 15,000 passessince station built. HTLRS ceased its operation entirely in 2002.NASDA: GUTS SLR system is in final integration phase waiting telescope to perform co-locationtest at GSFC
Report from China
1. ObservationsChangchun, Shanghai, Beijing, and Kunming stations are operational, while Wuhan is doingsome tests and will restart observing soon. The mobile system TROS has been in Wuhan formaintenance and rest, and is going to Urumqi for collocation with the VLBI system in thebeginning of next year. Another mobile system CTLRS has been in Xian for upgrading of thecontrol system and laser system, and is doing some testing satellite observations.
2. System upgradesThe Changchun station adopted the new computer control system as the Shanghai station had.The Shanghai station has upgraded the system control and diagnosis software. The newobservation house for SLR was started to build and will be completed in March 2003.Shanghai station is developing a Raman laser in collaboration with K. Hamal and I. Prochazka ofthe Czech Technical University and J. Gaignebet of CERGA for the new SLR station.
3. Argentina systemThe system is doing ground target ranging and is testing satellite tracking. It is shown that themount and servo system are working well. It is expected to have satellite returns soon.
WPLTN Executive Meeting
Date:TBD (May-June, 2003),3 days.Venue: Shanghai Observatory,Shanghai, ChinaParticipant: WPLTN ExecutivemembersTopics: How to upgrade theobservation capability ofWPLTN stations
SALRO 2001 Report
The SALRO site at the Solar Village,Saudi Arabia. The Solar Village issome 45 km north west of Riyadh.
Photography date is July 9, 2002,whilst tracking the Etalon2 satelliteafter dusk.
The site has many shrubs andhedges, giving it the feel of an oasisin the desert.
The site is operated primarily duringdaylight and early evening hours.
Re-Commissioning in 2000KACST let an O&M contract in mid 2000 with the aim of making SALRO work again, after it satunused for some time. Several months were spent in 2000 making all equipment operational.
Spares from the defunct Orroral Observatory and CRL 1.5m SLR system were used in this effort,and thanks go to those organizations for their assistance.
By the end of 2000, SALRO was capable of successful SLR to satellites in all orbit categories,except the very lowest – limitations of the mechanical transmit/receive system which remains.
While the entire system received attention to varying degrees, it was the laser, receiver andpulse-handling electronics that required the most work. The acquisition software had previouslybeen upgraded by EOS to deal with the Y2K problems.The team consists of two KACST staff trainees and two expatriate engineers working under theO&M contract.
Operations Commence 1/1/2001With all the gross problems cleared, use of the system commenced on a production basis. Operational procedures were developed in tandem with fine tuning of the system. Staff trainingassumed a higher priority. One observations shift operated all year.
2001 was a transitional year, commencing as “engineering” and ending by achieving compliancewith all the ILRS guidelines.
Some periods of downtime exceeding one week were required to overcome random failures, andimplement major improvements such as the installation of a new compensated SPAD detector.The incidence of failures and unscheduled downtime is now minimized with the implementationof a preventative-maintenance program.
Winter: mid December to mid March. Cold, withvery clear skies quite often. Occasional rain, somecloud periods lasting several days. Generally goodSLR conditions day and night, routine daylight GPSacquisitions possible.
Autumn: October to mid December. Cooler,generally clear. Good SLR conditions day and night.
Summer: mid June through September. Generallyclear, with varying degrees of sky haze at all times. Day: high temperatures and directed sunlight onthe telescope make SLR operations difficult.Night: no problems, including occasional GPSacquisitions.
Spring: mid March to mid June: Difficult SLRconditions, day and night. Increasing daytimetemperatures, very hazy at times, occasional cloudperiods lasting several days – generally unsettled.
PlansBoost productivity by expanding operations to cover 2 shifts 5 days per week.Re-survey the site, work to remove any residual errors in adopted site coordinates.Analyze and tune to eliminate systematic errors, range biases, etc.Engineering improvements to the telescope (sun shields), AC/refrigeration systems, etc.Site development to include analysis capability, GPS calibration etc.
SALRO PRODUCTIVITY PERFORMANCE 1996 TO PRESENT
0
100
200
300
400
500
Jan
-96
Jun
-96
No
v-96
Ap
r-97
Sep
-97
Feb
-98
Jul-
98
Dec
-98
May
-99
Oct
-99
Mar
-00
Au
g-0
0
Jan
-01
Jun
-01
No
v-01
Ap
r-02
Nu
mb
er o
f sa
telli
tes LO orbit
HIGH orbitLAGEOS
RE-COMISSIONING
SALROFAT BY NASA
REPRESENTATIVES
SITE CLOSED
Detector changed to MCP
Two shift operation
ConclusionsKACST have a firm commitment to continue and develop SALRO operations, raising the profileof this science and its derivatives within the organization.Environmental conditions allow useful operations all year round, with peak performanceoccurring in autumn and winter.
New Executives (Washington 2002 October 11)
Chairman Yang Fu Min Shanghai Observatory, ChinaExecutive Wang Tanqiang Beijing Observatory, ChinaExecutive Ramesh Govind NMD/GA, AustraliaSecretary Ben Greene EOS, AustraliaExecutive Hiroo Kunimori CRL, JAPANExecutive Mikio Sawabe NASDA, JAPAN*Executive Victor Shargorodsky IPIE, RussiaExecutive Vladimir Vasilyev IPIE, RussiaExecutive Abdallah M. Azzeer KACST, Saudi Arabia *Executive Turki Al-Saud KACST, Saudi ArabiaExecutive India: Elango K.Udayar (ISRO)
* To be late approval or replacement in each organization.
STA
TU
S O
F N
ASA
NE
TW
OR
K
•M
OB
LA
S-4
& 7
: N
omin
al O
pera
tions
.•
MO
BL
AS-
5 (A
ustr
alia
): N
omin
al O
pera
tions
.Pe
rfor
m s
ome
sing
le o
pera
tor
trac
king
whi
chin
crea
sed
data
vol
ume.
•M
OB
LA
S-6
(Sou
th A
fric
a):
Nom
inal
Ope
ratio
ns.
Als
o pe
rfor
min
g si
ngle
ope
rato
rtr
acki
ng.
•M
OB
LA
S-8
(Tah
iti):
Tra
inin
g/T
rack
ing
Stat
us.
In th
e pr
oces
s of
trai
ning
the
new
cre
w m
embe
r.
STA
TU
S O
F N
ASA
NE
TW
OR
K (
Con
t.)
•T
LR
S-3
(Are
quip
a):
Nom
inal
Ope
ratio
ns.
•H
OL
LA
S (H
awai
i):
Ope
ratio
nal S
tatu
s.C
ompl
eted
the
tele
scop
e co
ntro
l sys
tem
upgr
ade.
•M
LR
S (T
exas
): N
omin
al O
pera
tions
.
10/1
6/021
The
LLR
Net
wor
kT
he L
LR N
etw
ork
Pete
r J.
She
lus
ILR
S G
ener
al A
ssem
bly
Was
hing
ton,
DC
Oct
ober
11,
200
2
10/1
6/022
Tab
le o
f C
onte
nts
Tab
le o
f C
onte
nts
Dat
a Q
uant
ityD
ata
Qua
lity
Ref
lect
or s
tatis
tics
Whe
re w
e ar
eW
here
we
are
goin
gT
he s
yste
m d
rive
rsC
oncl
usio
n
10/1
6/023
TIM
E E
VO
LU
TIO
N O
F T
HE
QU
AL
ITY
OF
TH
E L
LR
OB
SE
RV
AT
ION
S
12345678 1988
1990
1992
1994
1996
1998
2000
2002
rms (centimeter)
McD
ON
ALD
CE
RG
A
10/1
6/024
NO
RM
AL
PO
INT
S / S
TA
TIO
N / Y
EA
R 1
987-2
001
57
345
312
611
422
451
555
540
578
607
594
353
663
832
331
49
86
3669
6858
162
205
477
409
249
403
246
127
185
0
100
200
300
400
500
600
700
800
900
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
CE
RG
AM
CD
ON
AL
D
10/1
6/025
LL
R O
BS
ER
VA
TIO
NS
/ R
EF
LE
CT
OR
1987-2
001
Ap
oll
o 1
5
80%
Lu
na
kh
od
2
2%
Ap
oll
o 1
1
9%
Ap
oll
o 1
4
9%
10/1
6/026
Whe
re w
e ar
eW
here
we
are
Ana
lysi
s in
Par
is &
Pas
aden
aO
bser
ving
in T
exas
and
at t
he C
ote
d’A
zur
35 Y
ears
of
Dat
aPo
sitiv
e ev
olut
ion
of p
reci
sion
and
accu
racy
10/1
6/027
Whe
re w
e ar
e go
ing
Whe
re w
e ar
e go
ing
Apa
che
Poin
t and
APO
LL
OM
t. St
rom
lo in
the
“oth
er”
hem
isph
ere
ML
RO
in I
taly
?W
ettz
ell i
n G
erm
any?
10/1
6/028
Ove
rwhe
lmin
g D
river
sO
verw
helm
ing
Driv
ers
Push
the
enve
lope
of
tech
nolo
gySc
ienc
eSc
ienc
eSc
ienc
e
10/1
6/029
Con
clus
ion
Con
clus
ion
The
LL
R n
etw
ork
hang
s on
Blo
od, s
wea
t and
tear
sU
nbri
dled
tena
city
Data Center Report
CDDISEDC
ILRS Global Data Center Report / EDC
W. Seemüller
ILRS General Assembly, Washington D.C., October 11, 2002
DGFIDGFI I L R Snternational aser anging ervice
I L R Snternational aser anging ervice
ILRS Global Data Center Report / EDC
Wolfgang Seemüller
Some remarks:
Backup procedures are installed at both global Data Centers (EDCreplaced by Zimmerwald, CDDIS by EDC), EDC replacement is tested already, but CDDIS replacement not, no data at EDC ftp server from NASA stations (e.g. Sept. 13 to 15, power outage at CDDIS, no datasince installation on Sep. 15, 2001)
Still old IRVs are distributed by the ILRS IRV exploder(e.g. September 13 to 15, 2002)
New implementations
Two wavelength ONPs (separate files) are accepted, archived and distributed at both Global Data Centers (1 or 2 passes?)
New summary files at EDC, additionally the wavelength is given
New quality check for data format and integrity is installed at EDC(still missing: automatic information of the responsible SLR station)
ILRS General Assembly, Washington D.C., October 11, 2002 13th International Laser Ranging Workshop, October 2002
DGFIDGFI
I L R Snternational aser anging ervice
ILRS Global Data Center Report / EDC(continued)
New format of summary files
Sat.No. Stat. For. Date Start Dur. No. Wavl. R. File name
9306102 7840 onp 0210.03 68562 290 11 5320 0 ql_allsat_02100400 9306102 7835 onp 0210.03 68307 524 19 5324 0 ql_allsat_02100400 9502101 7810 onp 0208.22 77259 071 06 8460 0 ql_allsat_02082300 9502101 7810 onp 0208.22 77212 116 08 4230 0 ql_allsat_02082300
^^^^^^^ New! Laser wavelength & data release
New quality check for data format and integrityIf an error is detected, an error file is written, e.g.:
99999 9502101022777840350153200010026300000000743450200700001391568129997006842069054000007710261289007200450000000 391735494965006421851667000006710261289007200280000000 391877821513006122565434000006110261289007200340000000
#spt hr ?. . x . . . x. . . . . xx. x . . x . .
with the following meanings:
# the data record length is not 54s seconds of day is not < 86400p surface pressure out of the intervall < 600, 1100 > hPat surface temperature out of the intervall < 200, 340 > Kh humidity out of intervall < 0, 100 > %r release flag is changing in this pass? checksum not correct or not set to 00
ILRS General Assembly, Washington D.C., October 11, 2002 13th International Laser Ranging Workshop, October 2002
DGFIDGFI
SLR
mai
ls a
nd S
LRep
orts
per
mon
th s
ince
Nov
. 199
5
0102030405060708090100
110
0102030405060708090100
110
Sta
tus:
Oct
.01,
200
2
SLRmail981
SLReport2183
NOVDECJANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
1996
1997
1998
1999
2000
2001
2002
Working Group Reports
Oct
ober
11,
200
2
Mis
sion
s W
orki
ng G
roup
Rep
ort t
o G
A
ILR
S M
issi
ons
Wor
king
Gro
up
Was
hing
ton,
DC
USA
Oct
ober
11,
200
2
Oct
ober
11,
200
2Part
icip
ants
Lis
t M
WG
mee
ting
Oct
.7 ,2
002
•H
iroo
Kun
imor
i (C
RL
)
•Sc
ott W
etze
l (H
TSI
)
•D
avid
Car
ter
•U
lric
h Sc
hrei
ber
(TU
M)
•Ju
lie H
ovat
h (H
TSI
)
App
logi
es:
•W
olfg
ang
Schl
uter
(B
KG
)
•Jo
hn D
egna
n (N
ASA
)
•V
ladi
mir
Vas
iliev
(IP
IE)
•G
iuse
ppe
Bia
nco
(ASI
)
•W
erne
r G
urtn
er (
AIU
B)
•K
eita
pu M
aam
aatu
aiah
utap
u(U
PF)
•M
ike
Pear
lman
(CFA
)•
RO
N N
oom
an(D
EO
S)•
Lud
wig
Gru
nwal
dt (
GFZ
)•
Frow
n K
oidl
(G
raz)
•G
raha
m A
pple
by(N
ER
C)
•Pe
ter.
J.Sh
elus
(UT
/CSR
)•
Paul
Ste
vens
(H
TSI
)•
Chr
isto
per
Cla
rke
(HT
SI)
•H
owar
d D
onov
an (
HT
SI)
•A
ndre
w N
icho
las
(NR
L)
•M
ark
Dav
is (
HT
SI)
•C
hris
Moo
re (
EO
S)•
Kaz
imir
s L
apus
hka
(RIG
A)
•M
atti
Paun
onen
(FG
I)•
Wol
fgan
g Se
emul
ler
(DG
FI)
23
peo
ple
Oct
ober
11,
200
2
Age
nda/
Sum
mar
y•
MW
G m
embe
rshi
p
•P
ast
and
Cur
rent
Act
ivit
y Si
nce
Las
t M
eeti
ng (
Mar
ch 2
002
- N
ice,
Fra
nce)
•C
ampa
ign/
Mis
sion
Sta
tus
–E
talo
n -1
, -2
Upd
ate
by R
on N
oom
en -
Del
ft U
nive
rsit
y–
LR
EU
pdat
e by
Mak
i Mae
da -
NA
SDA
–R
efle
ctor
Upd
ate
by N
atal
ia P
arkh
omen
ko -
IP
IE
–St
arsh
ine-
3U
pdat
e by
Sco
tt W
etze
l - H
TSI
–M
eteo
r-3M
Upd
ate
by N
atal
ia P
arkh
omen
ko -
IP
IE
•M
issi
on/S
atel
lite
Dat
a B
ase
for
Sate
llite
Sig
natu
re S
tudy
/ CO
M in
form
atio
n
•C
onti
nuin
g an
d F
utur
e A
ctio
ns•
Wor
k w
ith
sate
llite
org
aniz
atio
ns t
o ge
t M
issi
on R
eque
st F
orm
s an
d Su
ppor
t P
lans
com
plet
ed a
nd p
ut o
n W
eb -
ongo
ing
•Sa
telli
te T
rack
ing
Pri
orit
y L
ist
•U
pcom
ing
Mis
sion
s•
Wit
hin
2002
–Ic
eSat
- 1
(Dec
embe
r 20
02)
- U
pdat
e by
Pet
er S
helu
s -
CSR
–A
DE
OS-
II(D
ecem
ber
2002
) -
Upd
ate
by M
aki M
aeda
- N
ASD
A
•B
eyon
d 20
02–
Cry
osat
(200
4) -
Upd
ate
by G
raha
m A
pple
bey
- NE
RC
–A
ND
E
(Lat
e 20
03)
- In
trod
ucti
on b
y A
ndre
w N
icho
las
NR
L
–G
ravi
ty P
robe
B
(Apr
il 20
03)
- U
pdat
e by
Sco
tt W
etze
l - H
TSI
–N
PO
ESS
(201
3) -
Upd
ate
by S
cott
Wet
zel -
HT
SI
•O
ther
Mis
sion
New
s
•O
ther
Iss
ues
Oct
ober
11,
200
2
CO
OR
DIN
AT
OR
(New
ly-e
lect
ed)
Dav
id C
arte
rN
ASA
USA
Dep
uty
Coo
rdin
ator
(N
ewly
–el
ecte
d)H
iroo
Kun
imor
iC
RL
Japa
n
Mm
embe
rshi
p in
clud
es:
Dav
id L
. Car
ter
NA
SA
USA
John
Deg
nan
NA
SAU
SAG
iuse
ppe
Bia
nco
ASI
Ital
yV
ladi
mir
Vas
iliev
IPIE
Rus
sia
Url
ich
Schr
eibe
rT
UM
Ger
man
ySc
ott W
etze
lH
TSI
USA
Julie
Hor
vath
HT
SIU
SA
Mem
bers
hip
acti
on•M
ore
activ
e pa
rtic
ipat
ion
to b
e re
crui
ted
for
mem
bers
hip
- ke
ep tr
ying
•Cha
nge
Mis
sion
Req
uest
For
m to
ref
lect
sat
ellit
e na
me
in m
essa
ge S
ubje
ct li
ne -
no
actio
n
New
MW
G M
embe
rshi
p
Oct
ober
11,
200
2
Past
and
Pre
sent
Cam
paig
ns
Eta
lon-
1, -
2•
Cam
paig
n ex
tend
ed a
t Nic
e m
eetin
g un
til th
e en
d of
Mar
ch ‘
03 -
•R
on N
oom
en to
pro
vide
cur
rent
sta
tus
of c
ampa
ign.
Oct
ober
11,
200
2
Past
and
Pre
sent
Cam
paig
ns
•L
RE
•O
ffic
ial c
ampa
ign
was
1 m
onth
in S
epte
mbe
r 20
01 a
nd v
ery
diff
icul
t tar
get t
o ac
quir
e du
e to
3 h
our
laun
ch d
elay
cau
sed
sate
llite
to lo
ose
mos
t of
the
term
inat
or c
ondi
tions
for
3 m
onth
s
•G
rass
e L
LR
sta
tion
fina
lly c
augh
t it i
n D
ecem
ber
2001
, the
n Y
arra
gade
e, th
en C
RL
•N
o SL
R tr
acki
ng s
ince
Mar
ch 2
8, 2
002
•K
unim
ori p
ropo
ses
to k
eep
LR
E tr
acke
d on
an
“as
avai
labl
e” b
asis
–N
ASD
A w
ill p
rovi
de T
IRV
rou
tinel
y fo
r C
AM
PAIG
N p
erio
d
–L
RE
at b
otto
m o
f pr
iori
ty li
st
•L
esso
ns L
earn
ed–
We
wer
e no
t rea
dy f
or th
is c
ampa
ign
–W
e w
ill w
ork
on b
ette
r st
atio
n po
intin
g
–W
e ne
ed c
ube
spec
ific
atio
ns –
Tos
hi
•N
ASD
A P
ropo
sed
the
SEC
ON
D c
ampa
ign
arou
nd M
arch
-Apr
il 20
03.
–P
repa
rato
ry in
form
atio
n w
ill b
e ci
rcul
ated
bef
ore
appr
ovin
g ca
mpa
ign.
•N
ight
vis
ibili
ty f
or k
ey s
tati
on (
Exa
mpl
e fo
llow
ed in
nex
t pa
ge)
•T
o pr
oduc
e go
od I
RV
pre
dict
ion.
•Si
gnal
str
engt
h in
form
atio
n an
d ex
peri
ence
fro
m la
st c
ampa
ign
Oct
ober
11,
200
2
Oct
ober
11,
200
2
Sate
llite
Tra
ckin
g Pr
iori
ty L
ist
–C
urre
nt tr
acki
ng p
rior
ity r
efle
cts
ILR
S tr
acki
ng r
equi
rem
ents
–A
t the
Nic
e m
eetin
g Pe
te S
helu
s su
gges
ted
dyna
mic
trac
king
pri
oriti
es w
ith c
ontin
uous
mon
itori
ng o
f al
l sat
ellit
es a
nd s
yste
ms
and
adju
st tr
acki
ng p
rior
ities
to p
ick
up o
n w
eak
sate
llite
s.
–Se
e pa
pers
in m
ain
conf
eren
ce W
ahin
gton
DC
suc
h as
Bar
t Cla
rke’
s pa
per
on “
Inte
llige
ntSc
hedu
ler,
Pri
oriti
ze o
n th
e Fl
y” w
hich
will
add
ress
man
y of
thes
e is
sues
.
–T
o m
axim
ize
effi
cien
cy o
f in
terl
eavi
ng s
atel
lite,
sta
tion
s w
ish
to k
now
cri
teri
on f
orea
ch s
atel
lite
from
ana
lysi
s po
int
of v
iew
. (e
.g.
how
muc
h ti
me/
volu
me
num
ber
ofno
rmal
poi
nts
in t
he p
ass,
etc
)
–T
here
is n
o si
mpl
e cr
iter
ion
fro
m a
naly
sis,
tho
ugh
shou
ld m
ove
to e
xplo
re.
– T
here
is s
ugge
stio
ns t
hat
pilo
t pr
ogra
m c
ould
be
init
iati
ve in
a e
nvir
onm
ent
e.g.
inE
urol
as r
ealt
ime
tim
ebia
s se
rver
c pr
opos
ed.
Oct
ober
11,
200
2
Past
and
Pre
sent
Cam
paig
ns (
2)R
efle
ctor
•R
efle
ctor
is a
Rus
sian
sat
ellit
e w
here
SL
R is
use
d to
sup
port
PO
Dre
sear
ch f
or s
pace
deb
ris
dete
ctio
n
•L
aunc
hed
Dec
embe
r 10
, 200
1
•T
empo
rary
em
erge
ncy
appr
oval
by
the
GB
on
Dec
embe
r 20
, 200
1
•C
ampa
ign
Dur
atio
n w
as r
eque
sted
for
9 m
onth
s
•SL
R b
egan
on
Dec
embe
r 21
, 200
1–
Firs
t ope
ratio
nal R
efle
ctor
pas
s re
ceiv
ed b
y Y
arra
gade
e
–T
rack
ing
lead
ers
are
Yar
raga
dee,
Gra
z, R
GO
and
Mon
umen
t Pea
k
–C
urre
ntly
31
syst
ems
trac
king
Ref
lect
or
•Ju
stif
icat
ion
for
cont
inua
tion
of c
ampa
ign
was
pro
vide
d an
d ap
prov
alw
as g
iven
to c
ontin
ue c
ampa
ign
until
Aug
ust 2
002
then
ext
ende
d un
tilre
port
at I
LR
S m
eetin
g
•IP
IE r
eque
sted
Ful
l-ra
te d
ata
supp
lied
dire
ctly
to th
em to
stu
dy a
rray
resp
onse
–Fu
ll-ra
te d
ata
was
ori
gina
lly r
ecei
ved
from
CD
DIS
for
NA
SA o
nly
stat
ions
–Fu
ll-ra
te S
tudy
Gro
up r
ecom
men
ded
dire
ct f
ull r
ate
tran
smis
sion
fro
m o
ther
syst
ems
to I
PIE
–IP
IE n
oted
that
“N
ow w
e re
ceiv
e FR
dat
a fr
om H
erst
mon
seau
, Mou
ntSt
rom
lo, S
an F
erna
ndo,
and
fro
m s
ome
othe
r st
atio
ns”.
Oct
ober
11,
200
2
Ref
lect
or D
ata
Yie
ld(1
2/21
/01-
10/0
3/02
)
0
50
100
150
200
250
300
350
400
MOBLAS 5
AUSLAS
RGOLAS
MOBLAS 4
MOBLAS 6
MOBLAS 7
SPNLAS
CHALAS
GRASSE
MLRS
RIGLAS
SALRO
ZIMLAT
HOLLAS
TLRS 3
MOBLAS 8
CHILAS
SHOLAS
WLRS01
SIMLAS
STROMLO
BEJLAS
GFZLAS
MDNLAS
MENLAS
MD2LAS
CRMLAS
KOMLAS
TIGO
Metsaho2
Kunming
Station
Passes
Oct
ober
11,
200
2
Past
and
Pre
sent
Cam
paig
ns (
3)
Star
shin
e 3
•St
arsh
ine
sate
llite
s w
ere
to b
e tr
acke
d by
NA
SA s
tatio
ns a
nd o
ther
s if
des
ired
to d
eter
min
e ut
ility
of
the
retr
oref
lect
ors
•St
arsh
ine
3 la
unch
ed o
n Se
ptem
ber
30, 2
001
–Fi
rst S
tars
hine
-3 p
ass
rece
ived
by
Yar
raga
dee
on O
ctob
er 3
, 200
1
–T
rack
ing
limite
d to
NA
SA s
tatio
ns a
nd a
nyon
e w
ho w
ante
d to
try
trac
king
(10
)
–N
RL
pro
vide
d hi
gh q
ualit
y pr
edic
tions
to h
elp
supp
ort a
cqui
sitio
n bu
t dat
a av
aila
bilit
y w
as in
freq
uent
–St
arsh
ine-
3 sc
hedu
led
to d
e-or
bit o
n ap
prox
imat
ely
Oct
ober
30,
200
2
02468101214
MOBLAS 5
MOBLAS 7
MOBLAS 4
RGOLAS
Metsaho2
ZIMLAT
CHILAS
AUSLAS
CHALAS
HOLLAS
Station
Passes
Oct
ober
11,
200
2
Rec
ent L
aunc
hes
/ New
Mis
sion
s (3
)
Met
eor-
3M•
Met
eor-
3M w
as la
unch
ed o
n D
ecem
ber
10, 2
001
alon
g w
ith R
efle
ctor
•M
eteo
r-3M
is u
sing
an
Opt
ical
Lun
eber
g L
ens
for
SLR
trac
king
•SL
R o
rigi
nally
lim
ited
by a
gree
men
t to
Gre
enbe
lt, M
onum
ent P
eak,
a R
ussi
an s
tatio
n ne
ar M
osco
w a
sa
test
onl
y–
the
SAG
E p
roje
ct w
as c
once
rned
abo
ut in
terf
eren
ce in
thei
r so
lar
expe
rim
ents
–re
stri
cted
trac
king
ele
vatio
ns
–tr
acki
ng in
nig
httim
e ho
urs
only
•A
t a m
eetin
g w
ith th
e SA
GE
team
in F
ebru
ary
it w
as d
iscl
osed
that
the
GL
ON
ASS
/GPS
rec
eive
r on
-bo
ard
Met
eor-
3M w
as n
ot f
unct
ion.
–SL
R h
ad n
ow b
ecom
e th
e on
ly m
etho
d fo
r PO
D in
sup
port
of
SAG
E -
Rad
ar tr
acki
ng e
nds
on A
pril
30, 2
002
•SA
GE
team
req
uest
ed to
Met
eor-
3M g
roup
to s
uppo
rt S
LR
-–
No
rest
rict
ions
for
ele
vatio
n or
day
light
trac
king
•O
n A
pril
3rd
a M
issi
on S
uppo
rt R
eque
st F
orm
was
sub
mitt
ed f
or I
LR
S su
ppor
t of
Met
eor-
3M
•G
over
ning
Boa
rd A
ppro
val a
t IL
RS
GB
mee
ting
Oct
ober
11,
200
2
Met
eor-
3M D
ata
Yie
ld(1
2/21
/01-
10/0
2/02
)
0
10
20
30
40
50
60
70
MOBLAS 5
RGOLAS
MOBLAS 4
AUSLAS
SALRO
SPNLAS
GRASSE
MOBLAS 6
MOBLAS 7
CHALAS
HOLLAS
CHILAS
GFZLAS
SHOLAS
MLRS
STROMLO
RIGLAS
MLRO
WLRS01
BEJLAS
Station
Passes
Oct
ober
11,
200
2
Cur
rent
Tra
ckin
g pr
iori
ties
Alt
itud
eIn
clin
atio
nP
rior
ity
Mis
sion
Spon
sor
(k
m)
(de
gree
s)C
omm
ents
1G
RA
CE
A, B
GFZ
/NA
SA48
5-50
089
Gra
vity
res
earc
h (T
wo
sate
llite
s tr
acke
d al
tern
atel
y)2
CH
AM
PG
FZ42
9-47
487
.27
Gra
vity
res
earc
h3
GFO
-1U
S N
avy
790
108.
0A
ltim
eter
cal
ibra
tion
/ no
othe
r tr
acki
ng te
chni
que
avai
labl
e4
Env
isat
-1E
SA80
098
.6A
ltim
eter
cal
ibra
tion
/ DO
RIS
bac
kup
5E
RS-
2E
SA80
098
.6A
ltim
eter
cal
ibra
tion
/ PR
AR
E b
acku
p6
Jaso
nN
ASA
/CN
ES
1,35
066
.0A
ltim
eter
/ D
OR
IS a
nd G
PS b
acku
p7
TO
PEX
/Pos
eido
nN
ASA
/CN
ES
1,35
066
.0A
ltim
eter
cal
ibra
tion
/ DO
RIS
and
GPS
bac
kup
8St
arle
tteC
NE
S81
5-1,
100
49.8
Geo
detic
/ n
o ot
her
trac
king
tech
niqu
e av
aila
ble
9St
ella
CN
ES
815
98.6
Geo
detic
/ n
o ot
her
trac
king
tech
niqu
e av
aila
ble
10
Met
eor-
3MIP
IE10
2099
.64
Ret
rore
flec
tor
rese
arch
/ N
o ot
her
trac
king
tech
niqu
e av
aila
ble
11B
eaco
nCN
ASA
950-
1300
41G
ravi
ty R
esea
rch
/ upg
rade
d to
ong
oing
mis
sion
(Ja
n 20
02)
12R
EFL
EC
TO
RIP
IE1,
020
99.6
POD
res
earc
h fo
r sp
ace
debr
is d
etec
tion
13A
jisai
NA
SDA
1,48
550
Geo
detic
/ n
o ot
her
trac
king
tech
niqu
e av
aila
ble
14L
AG
EO
S2A
SI/N
ASA
5625
52.6
Geo
detic
/ n
o ot
her
trac
king
tech
niqu
e av
aila
ble
15L
AG
EO
S1N
ASA
5850
109.
8G
eode
tic /
no
othe
r tr
acki
ng te
chni
que
avai
labl
e16
Eta
lon1
Rus
sian
Fed
erat
ion
19,1
0065
.3G
eode
tic /
no
othe
r tr
acki
ng te
chni
que
avai
labl
e17
Eta
lon2
Rus
sian
Fed
erat
ion
19,1
0065
.2G
eode
tic /
no
othe
r tr
acki
ng te
chni
que
avai
labl
e18
GL
ON
ASS
86R
ussi
an F
eder
atio
n19
,100
65Po
sitio
ning
PO
D e
nhan
cem
ent /
rep
lace
d G
70 a
s of
02/
20/0
2
19G
LO
NA
SS87
Rus
sian
Fed
erat
ion
19,1
0065
Posi
tioni
ng P
OD
enh
ance
men
t / r
epla
ced
G72
as
of 2
/20/
0220
GL
ON
ASS
84R
ussi
an F
eder
atio
n19
,100
65Po
sitio
ning
PO
D e
nhan
cem
ent /
rep
lace
d G
79as
of
2/22
/01
21G
PS35
US
DoD
20,1
0054
.2Po
sitio
ning
PO
D e
nhan
cem
ent
22G
PS36
US
DoD
20,1
0055
.0Po
sitio
ning
PO
D e
nhan
cem
ent
Oth
er T
arge
ts o
f O
ppor
tuni
ty:
Star
shin
e 3
US
Coo
pera
tive
470
67D
rag
rese
arch
/ no
oth
er tr
acki
ng te
chni
que
avai
labl
eL
RE
NA
SDA
250-
3600
028
.5H
EO
Cha
ract
eriz
atio
n /
Spin
evo
lutio
n vs
. BK
7 de
grad
atio
n
Oct
ober
11,
200
2
Upc
omin
g M
issi
ons
Sat
ellit
e
Ow
ner
Mis
sion
Typ
e
Pl
anne
d L
aunc
h D
ate
M
issi
on D
urat
ion
R
ecei
ved
Mis
sion
R
eque
st F
orm
R
ecei
ved
ILR
S G
B
App
rova
l
IceS
at (G
LA
S)
NA
SA
Ice
shee
t res
earc
h m
id-D
ecem
ber 2
002
3-5
year
s Y
es
Y
es
A
DE
OS-
II
NA
SDA
R
emot
eSen
sing
C
alib
ratio
nGPS
D
ecem
ber 2
002
3 ye
ars
Yes
Y
es
Gra
vity
Pro
be B
N
ASA
R
elat
ivity
rese
arch
A
pril
2003
1-
2 ye
ars
Yes
Y
es
AN
DE
NR
L D
rag
rese
arch
L
ate
2003
No
No
Cry
oSat
E
SA
Ear
th S
ensi
ng
Apr
/May
200
4 3.
5 ye
ars
Yes
A
wai
ting
MW
G
Rec
omm
end
atio
n IR
S IS
RO
R
emot
eSen
sing
C
alib
ratio
nGPS
N
o N
o
AL
OS
NA
SDA
R
emot
eSen
sing
C
alib
ratio
nGPS
2
005
3 ye
ars
No
No
ET
S-V
III
NA
SDA
T
ime
tran
sfer
/PO
D
exp
erim
ent
Q1
in 2
005
3 ye
ars
No
No
NPO
ESS
N
OA
A
Ear
th S
ensi
ng
2013
7
year
s Y
es
No
Oct
ober
11,
200
2
Upc
omin
g M
issi
ons
(with
in 2
002)
AD
EO
S-II
(A
dvan
ced
Ear
th O
bser
ving
Sat
ellit
e)•
AD
EO
S-II
is a
n E
arth
Sen
sing
mis
sion
hos
ted
by N
ASD
A•
AD
EO
S-II
is c
urre
ntly
sch
edul
ed to
be
laun
ched
in N
ovem
ber
1-30
, 200
2•
SLR
sup
port
req
uire
d fr
om L
+39
days
to s
uppo
rt P
OD
- G
PS w
ill b
e tu
rned
off
dur
ing
this
peri
od•
Issu
e w
ith p
ossi
ble
dam
age
to G
LI
from
SL
R c
ausi
ng m
uch
prob
lem
with
trac
king
•M
aki M
aeda
pro
vide
d st
atus
on
mis
sion
and
to p
rovi
de s
peci
fica
tions
and
ana
lysi
s fo
rsa
fety
con
cern
s fo
r th
e G
LI
ICE
Sat (
Ice,
Clo
ud, a
nd L
and
Ele
vatio
n Sa
telli
te)
•IC
ESa
t is
a N
ASA
mis
sion
to m
easu
re th
e ic
e sh
eet m
ass,
bal
ance
, clo
ud a
nd a
eros
olhe
ight
s, o
ptic
al d
ensi
ties,
veg
etat
ion
and
land
topo
grap
hy h
oste
d by
NA
SA /
CSR
.
•IC
ESa
t is
curr
ently
sch
edul
ed to
be
laun
ched
in m
id D
ecem
ber
2002
•Pr
epar
atio
ns f
or S
LR
sup
port
are
ong
oing
at U
nive
rsity
of
Tex
as, g
ood
coor
dina
tion
with
ILR
S•
HT
SI to
incl
ude
GPS
dat
a in
pre
dict
ion
gene
ratio
n•
Arr
ay c
onfi
rmat
ion
only
for
L+3
0 da
ys, t
hen
until
L+6
mon
ths
SLR
is h
igh
prio
rity
•Pe
ter
Shel
us to
pro
vide
sta
tus
of m
issi
on•
Scot
t Wet
zel t
o pr
ovid
e st
atus
of
GPS
sup
port
ed p
redi
ctio
ns
Oct
ober
11,
200
2
Upc
omin
g M
issi
ons
(bey
ond
2002
)
GPB
(G
ravi
ty P
robe
B)
•G
PB is
a N
ASA
/ St
anfo
rd U
nive
rsity
rel
ativ
ity m
issi
on
•G
PB is
sch
edul
ed f
or la
unch
in A
pril
2003
•C
oord
inat
ion
effo
rts
betw
een
ILR
S an
d M
issi
on o
n-go
ing
–G
PB O
rbit
Det
erm
inat
ion
and
Orb
it T
rim
Rev
iew
hel
d in
Jun
e 20
02
Atm
osph
eric
Neu
tral
Dra
g E
xper
imen
t (A
ND
E)
•A
ND
E is
an
NR
L r
esea
rch
sate
llite
sys
tem
as
a m
eans
to c
alib
rate
atm
osph
eric
dra
g ef
fect
s on
low
eart
h or
bitin
g sa
telli
tes.
•T
he p
rogr
am c
onsi
sts
of tw
o sm
all s
pher
ical
sat
ellit
es
•D
ata
abou
t the
pos
ition
of
the
sate
llite
s ca
n be
use
d to
cal
cula
te th
e dr
ag o
n th
e sa
telli
te a
nd th
eat
mos
pher
ic d
ensi
ty a
t tha
t alti
tude
.
•T
he d
ata
will
als
o be
use
d to
ans
wer
que
stio
ns a
bout
the
impa
ct o
f sp
acec
raft
com
posi
tion
and
ther
mal
cha
ract
eris
tics
whe
n co
mpu
ting
theo
retic
al b
allis
tic c
oeff
icie
nts
•A
ndre
w N
icho
las
from
NR
L to
pro
vide
info
rmat
ion
on th
e A
ND
E m
issi
on
Oct
ober
11,
200
2
Upc
omin
g M
issi
ons
(2)
(bey
ond
2002
)
Star
shin
e 4/
5•
Star
shin
e 4/
5 la
unch
situ
atio
n m
ay b
e im
prov
ing
a bi
t.
–Sa
telli
tes
wer
e bu
mpe
d fr
om th
e ST
S-11
4 m
issi
on b
y an
Int
erna
tiona
l Spa
ce S
tatio
n co
ntro
l mom
ent g
yro.
–St
arsh
ines
4 a
nd 5
mig
ht n
ot g
et to
fly
unt
il 20
05 o
r 20
06, a
s a
resu
lt of
a b
udge
t-dr
iven
dec
reas
e in
Spa
ceSh
uttle
laun
ch r
ates
to f
our
per
year
–L
imite
d nu
mbe
r of
shu
ttle
flig
hts
may
aga
in b
e in
crea
sed.
–M
ore
to f
ollo
w a
s kn
own
•St
arsh
ine
4/5
will
hav
e m
ount
ed 1
000
mir
rors
and
31
lase
r re
tror
efle
ctor
s on
its
exte
rnal
she
ll.
•St
arsh
ine
4/5
Mis
sion
Pla
n
–R
elea
se f
rom
Sta
rshi
ne 4
, a 4
inch
(10
cm
) ho
llow
alu
min
um s
pher
e, in
stea
d, w
hich
will
be
Star
shin
e 5.
–T
his
smal
l sub
sate
llite
will
be
rele
ased
sho
rtly
aft
er S
tars
hine
4 is
dep
loye
d fr
om S
pace
Shu
ttle
Atla
ntis
–B
oth
Star
shin
es 4
and
5 w
ill c
arry
31
lase
r re
tror
efle
ctor
s on
thei
r su
rfac
es
–St
arsh
ine
5 w
ill h
ave
no m
irro
rs a
nd w
ill th
us n
ot b
e na
ked-
eye
visi
ble,
so
trac
king
will
dep
ende
nt to
tally
on I
LR
S an
d Sp
ace
Com
man
d tr
acki
ng f
or o
rbit
dete
rmin
atio
n of
this
sat
ellit
e.
–B
y co
mpa
ring
the
orbi
tal d
ecay
rat
es o
f St
arsh
ine
4 an
d 5,
it w
ill p
ossi
ble
for
us to
det
erm
ine
the
dens
ity o
f
the
eart
h's
atm
osph
ere
mor
e pr
ecis
ely
than
we'
ve b
een
able
to d
o on
pre
viou
s m
issi
ons.
Oct
ober
11,
200
2
Upc
omin
g M
issi
ons
(3)
(bey
ond
2002
)
Cry
osat
•M
issi
on R
eque
st f
orm
rec
eive
d
•W
orki
ng w
ith M
WG
on
appr
oval
s fo
llow
ing
Cla
rifi
catio
ns to
for
m
•G
raha
m A
pple
by f
rom
NE
RC
to p
rovi
de in
form
atio
n on
Cry
osat
Oct
ober
11,
200
2
Upc
omin
g M
issi
ons
(4)
(bey
ond
2002
)
The
Nat
iona
l Pol
ar-o
rbiti
ng O
pera
tiona
l Env
iron
men
tal S
atel
lite
Syst
em (
NPO
ESS
)•
Mis
sion
Req
uest
for
m r
ecei
ved
in J
uly
•M
issi
on n
ot s
ched
uled
unt
il A
pril
2013
, how
ever
, ear
ly m
issi
on p
lann
ing
done
to d
eter
min
e if
they
can
use
SL
R.
•In
crea
ses
the
timel
ines
s, a
ccur
acy,
and
cos
t-ef
fect
iven
ess
of p
ublic
war
ning
s an
d fo
reca
sts
ofse
vere
wea
ther
eve
nts;
impr
oved
mic
row
ave
imag
ery
soun
ding
pro
duct
s w
ill im
prov
e pr
edic
tion
of o
cean
sur
face
win
d sp
eed
and
dire
ctio
n
•Su
ppor
ts g
ener
al a
viat
ion,
agr
icul
ture
, and
mar
itim
e co
mm
uniti
es a
imed
at i
ncre
asin
g U
.S.
prod
uctiv
ity; i
mpr
oved
ear
ly w
arni
ngs
will
miti
gate
the
deva
stat
ing
effe
cts
of f
lood
s th
roug
hdi
sast
er p
lann
ing
and
resp
onse
•A
ntic
ipat
ed L
aunc
h:A
pril
2013
Mis
sion
Dur
atio
n:7
year
s
•O
rbita
l Par
amet
ers
•A
ltitu
de:
833
± 17
km
Incl
inat
ion:
98.7
± 0
.05
•E
ccen
tric
ity:
0.00
11
Oct
ober
11,
200
2
•N
POE
SS T
rack
ing
Req
uire
men
ts–
Tra
ckin
g Sc
hedu
le:
Mon
thly
Spat
ial C
over
age:
15
to 2
0 si
tes
with
hig
h pr
iori
ty
–T
empo
ral C
over
age:
Con
tinuo
us f
or 4
day
s pe
r m
onth
–D
ata
Acc
urac
y:2
cm
–SL
R w
ill b
e em
ploy
ed a
t the
sta
rt o
f th
e m
issi
on f
or in
itial
cal
ibra
tion,
and
for
per
iodi
c va
lidat
ions
and
corr
ectio
n. C
alib
ratio
n w
ill b
e re
quir
ed a
ppro
xim
atel
y m
onth
ly.
–SL
R-b
ased
cal
ibra
tion,
usi
ng h
igh-
elev
atio
n SL
R to
the
GPS
-der
ived
NPO
ESS
PO
D o
rbits
, pro
duce
s an
inde
pend
ent m
easu
re o
f th
e ra
dial
acc
urac
y an
d st
abili
ty (
drif
t) o
f th
e PO
D s
olut
ions
. Thi
s te
chni
que
rem
oves
the
drif
t in
the
POD
orb
it (e
ffec
tivel
y th
e dr
ift w
ith r
espe
ct to
the
fram
e in
clud
ing
the
tide
gaug
es)
from
the
altim
eter
-der
ived
–SS
H m
easu
rem
ent d
rift
for
reg
ions
sur
roun
ding
sel
ecte
d tid
e ga
uges
. T
ide
gaug
es n
ear
SLR
trac
king
site
san
d G
PS s
tatio
ns m
inim
ize
the
effe
cts
of g
eogr
aphi
cal v
aria
tions
in th
e ra
dial
orb
it dr
ift,
thus
allo
win
g th
eal
timet
er m
easu
rem
ent d
rift
to b
e co
mpa
red
(and
cal
ibra
ted
if n
eces
sary
) w
ith th
e co
rres
pond
ing
valu
e
from
the
tide
gaug
e da
ta. Upc
omin
g M
issi
ons
(5)
(bey
ond
2002
)
Oct
ober
11,
200
2
Oth
er M
issi
on N
ews
Jaso
n M
aneu
ver
issu
es
•Ja
son
man
euve
r m
essa
ges
are
not f
ollo
win
g pr
oper
for
mat
ting
guid
elin
es
•C
urre
ntly
wor
king
with
Jas
on te
am to
res
olve
man
euve
r fo
rmat
issu
es
IRS
(Ind
ia)
mis
sion
sta
tus
upda
ted
by K
.Ela
ngo.
ILR
S E
ight
h G
ener
al A
ssem
bly
Net
wor
k an
d E
ngin
eeri
ng W
orki
ng G
roup
Wer
ner
Gur
tner
Was
hing
ton
D.C
. O
ctob
er 1
1, 2
002
Net
wor
k an
d E
ngin
eeri
ng W
orki
ng G
roup
•M
eetin
g on
Mon
day,
Oct
ober
7, 2
002
•Si
te lo
g da
ta b
ase
–av
aila
ble
on th
e W
eb: S
ite lo
g fi
les,
mas
ter
Exc
el f
ile–
upda
te p
roce
dure
s to
be
fina
lized
•K
now
ledg
e da
ta b
ase
–B
iblio
grap
hy o
n th
e W
eb•
Upd
ate
impo
rtan
t•
Send
ref
eren
ces
to th
e C
entr
al B
urea
u–
To
be s
uppl
emen
ted
by "
hint
s an
d ty
ps"
for
typi
cal h
ardw
are
•W
eekl
y an
alys
is r
epor
ts:
–"W
ish
list"
to b
e fo
rmul
ated
by
stat
ions
•D
ynam
ic p
rior
ities
:–
Firs
t dis
cuss
ions
sta
rted
•T
ime
bias
ser
ver
and
real
tim
e st
atus
exc
hang
e–
Stat
ions
urg
ed to
join
, use
, and
giv
e fe
edba
ck•
NW
&E
WG
Coo
rdin
ator
–N
ew: G
eorg
Kir
chne
r
I L R Snternational aser anging ervice
International Laser Ranging Service
Data Formats & Procedures Working Group
Agenda
Tuesday, October 08, 2002, 18:00-19:30Washington D.C., USA
Breakout Room
1. Welcome and Introduction Wolfgang Seemüller
2. Membership Wolfgang Seemüller
3. Review of CB Activities Van Husson
4. Refraction Study Group Report Stefan Riepl
5. Prediction Format Study Group Report Randy Ricklefs(separate meeting: October 07, 21:00-22:30, Breakout Room)
6. Two colour data submission and management Werner Gurtner
7. Working Group Charter/WG Activities Wolfgang Seemüller, allWhat can our WG do to reach the 1 mm ranging accuracy?
8. Management of prediction Exploder after break down Wolfgang Seemüller
9. IRV Provider ID in IRV data set W. Gurtner, S. Riepl
10. FR data format to accommodate calibration data, V. Husson, C. Noll, W. Gurtner,data flow and filename convention W. Seemüller
DGFIDGFI
I L R Snternational aser anging ervice
Data Formats & Procedures Working Group Report
Wolfgang Seemüller
Two colour wavelength data submission and management installedNew quality check for data format and data integrity now at both GlobalData CentersFull-rate data format and archiving in progress (see below)IRV provider ID in IRV data set in new prediction format includedRefraction Study Group - see Report by Stefan Riepl
Prediction Format Study Group - see Report by Randy Ricklefs
CB ActivitiesNormal Point Data: - Sites need to ensure the release flag is updated
- Improvement of data replacement procedures- Periodic comparison of data centers NP statistics
Full Rate data: see below
Site Logs: Sites need to keep their logs and local ties current
Standard software packages: - NP generation (volunteers?)- Integration of satellite predictions (volunteers?)- EDC provide their software for format and data integrity check
Multi-colour ranging NP data: EDC and CDDIS have modified their data handling procedures
FR data meeting on Thursday noon, decisions:Three issues were discussed: Frequency of delivery, file name convention, and accomodation ofthe FR data format to calibration data.
- The stations send a daily file for each satellite to the Global Data Centers, containingall passes starting the same day
- File name convention: file naming as of CDDIS, but satellite names without dashes- Recommendation: the calibration data will not be archived. If needed the station should be contacted
Implementation date: March 01, 2003A SLRmail with the details will be sent in November 2002
ILRS General Assembly, Washington D.C., October 11, 2002October 11, 2002
13th International Laser Ranging Workshop,October 07-11, 2002
DGFIDGFI
Refraction Study Group Summary
13th International Workshop on Laser Ranging, Washington,
USA,7-11 October 2002
• Currently available refraction models show differences at the
millimeter level
• 2-colour lasere ranging is currently limited to about 1cm
accuracy for remote sensing of refraction, i.e. inmature to
tzest millimeter effects
• Arrangements have bee made to perform a comparison of
– MARINI-MURRAY refraction model and
– the recently introduced mapping function derived by
MENDES in conjunction with the SAASTOMOINEN
zenith path delay formula.
An improvement in the modelling of the atmospheric delay
should show up in better residual statistics at low elevations.
• Results are to be presented at the next analysis working
group meeting in Nice, 2003.
– Typeset by FoilTEX – 1
ILR
S Pr
edic
tion
Form
at S
tudy
Gro
up11
Oct
ober
200
21
Pre
dict
ion
For
mat
s S
tudy
Gro
up"L
ynx
Tea
m"
Com
mis
sion
ed b
y:T
he IL
RS
Dat
a F
orm
ats
and
Pro
cedu
res
Wor
king
Gro
upat
Mat
era,
Nov
embe
r 20
00
Pre
sent
atio
n pr
epar
ed b
yR
. Ric
klef
sU
nive
rsity
of T
exas
at A
ustin
McD
onal
d O
bser
vato
ry a
nd C
ente
r fo
r S
pace
Res
earc
h(r
lr@as
tro.
as.u
texa
s.ed
u)
ILR
S Pr
edic
tion
Form
at S
tudy
Gro
up11
Oct
ober
200
22
Pur
pose
Rec
omm
end
a si
ngle
lase
r ra
ngin
g pr
edic
tion
form
at to
enc
ompa
ss
•Ear
th s
atel
lites
•Lun
ar la
ser
retr
o-re
flect
ors
•Las
er tr
ansp
onde
rs o
n or
orb
iting
oth
er s
olar
sys
tem
bod
ies
•Las
er tr
ansp
onde
rs in
tran
sit
ILR
S Pr
edic
tion
Form
at S
tudy
Gro
up11
Oct
ober
200
23
Cur
rent
Sta
tus
•Lun
ar a
nd tr
ansp
onde
r fe
asib
ility
stu
dies
are
nea
rly c
ompl
ete.
No
“sho
w s
topp
ers”
hav
e be
en fo
und.
•Int
erpo
lato
r te
sts
are
near
ly c
ompl
ete.
Nee
d to
insu
re th
atin
terp
olat
or w
orks
with
nor
mal
poin
t gen
erat
ion.
•Pre
limin
ary
form
at is
rea
dy fo
r re
view
•Sam
ple
code
is in
ear
ly s
tage
s
ILR
S Pr
edic
tion
Form
at S
tudy
Gro
up11
Oct
ober
200
24
For
mat
Fea
ture
s
•Tab
ular
(gr
id)
form
at (
inte
rpol
atio
n, n
ot in
tegr
atio
n)•S
tate
vec
tors
spa
ced
as r
equi
red
(fix
ed o
r va
riabl
e)•T
rue
body
-fix
ed c
oord
inat
es•M
ultip
le h
eade
r an
d ep
hem
eris
rec
ord
type
s•S
peci
al r
ecor
d ty
pes
to h
andl
e fe
atur
es o
f par
ticul
ar ta
rget
cla
sses
•Rec
ords
sho
rt e
noug
h fo
r e-
mai
l•A
llow
s fo
r in
tegr
atio
n be
yond
last
rec
ord
of fi
le•S
ome
free
form
at r
ecor
ds•R
emov
es n
eed
for
drag
mes
sage
s
ILR
S Pr
edic
tion
Form
at S
tudy
Gro
up11
Oct
ober
200
25
The
Nex
t Ste
ps
•Dis
trib
ute
form
at w
idel
y w
ithin
lase
r co
mm
unity
for
com
men
t
•Dev
elop
sam
ple
code
•Con
duct
pilo
t pro
ject
s us
ing
new
form
at a
t sev
eral
sta
tions
•Ref
ine
form
at a
s ne
eded
•Mak
e pl
ans
for
gene
ral i
mpl
emen
tatio
n
•See
k IL
RS
Gov
erni
ng B
oard
’s a
ppro
val f
or im
plem
enta
tion
Pilot project “harmonization”
Goal make QC results more consistent
Issues ITRF2000 performance report card
Pilot project “benchmarking”
Characteristics October 10 – November 7, 1999 LAGEOS-1 Produce identical integration and estimation results (i.e. detect
software and data treatment errors and blunders) A: direct integration
B: estimation orbitC: estimation orbit, EOPs and station coordinatesD: idem, no requirements on dynamic orbit model
Contributors ASI, CRL, CSR, DGFI, GEOS, IAAK, JCET, NASDA, NERC
First results Residuals diverge up to several m (“A”) Mean residuals diverge several dm (“A”), several mm (“B”), 0.1
mm (“C”) Orbits disagree up to several m (“A”), ~ 0.6 m (“B”), cm (“C”) Refraction corrections consistent at 0.2 mm Relativity corrections consistent at 0.1 mm
Future refine description and re-analysis develop reference solution pass/fail benchmark test essential for other contributions
Pilot project “positioning + earth orientation”
Purposes solutions for EOPs and station coordinates 28-day intervals “A”: 1999 (LAGEOS) “B”: 2001-2002 (LAGEOS vs. Etalon; EOP vs. EOPdots) official ILRS product
Customers IERS Bulletin A ITRF? …
Contributors ASI, BKG, CRL, CSR, DGFI, GEOS, GRGS, IAA, IAAK, JCET,
NERC
Call for Participation
Products daily x/y-pole, LOD for most recent days (-> IERS Bulletin A) daily x/y-pole, LOD (28 days) + coordinates
2 Types of contributions solicited data reduction combination
Operational timeline
Timeline October 31, 2002: disseminate CFP December 15, 2002: “benchmarking “ criteria established December 31, 2003: reactions “in” January 15, 2002: data reduction contributors selected January 15 – March 15, 2003: test period for candidate
combination centers April 2003: selection of prime and back-up combination centers May 1, 2002: system fully operational
ILR
S G
ener
al A
ssem
bly
Frid
ay O
ctob
er 1
1th 2
002
Sig
nal
Pro
cess
ing
ad
-ho
c W
GG
raha
m A
pple
by
•S
mal
l wor
king
gro
up w
ith c
lear
prim
ary
goal
of
com
putin
g sy
stem
-dep
ende
nt C
oM v
alue
s fo
rsp
heric
al s
atel
lites
;•
Com
e a
long
way
sin
ce e
arly
det
ectio
ns o
f effe
ct in
sing
le-p
hoto
n da
ta –
late
st r
esul
ts fo
r LA
GE
OS
,A
JIS
AI a
nd E
TA
LON
wer
e pr
esen
ted
in T
arge
tS
igna
ture
s se
ssio
n of
LW
13;
•In
form
al m
eetin
gs (
at E
GS
, ILR
S w
/s)
plus
em
ail
corr
espo
nden
ce, i
nclu
ding
val
uabl
e in
put f
rom
HT
SI
on N
AS
A-s
yste
m c
onfig
urat
ion;
Current/Future
•W
orki
ng w
ith H
TS
I col
leag
ues
to fo
rm a
nIL
RS
dat
abas
e of
atti
tude
alg
orith
ms
for
CoM
corr
ectio
ns fo
r th
e no
n-sp
heric
al s
atel
lites
;
•re
com
men
d to
the
MW
G th
at a
ll fu
ture
prop
osal
s fo
r IL
RS
sup
port
incl
ude
attit
ude
algo
rithm
s as
wel
l as
LRA
CoM
vec
tors
;
•ne
ed to
look
now
at p
oten
tial m
m-le
vel e
ffect
sin
arr
ay c
orre
ctio
ns fo
r th
e “s
mal
l-clu
ster
”ar
rays
in c
urre
nt u
se (
ER
S, J
ason
, EN
VIS
AT
,G
FO
,…).
•N
ew m
embe
rs a
lway
s w
elco
me.
Campaigns and Mission Reports
C H
A M
P
Inte
rnat
iona
l Las
er R
angi
ng S
ervi
ce -
Gen
eral
Ass
embl
y, O
ctob
er 2
002
Was
hing
top
D.C
., U
SA
L. G
runw
aldt
, R. S
chm
idt,
R. K
önig
, C
h. R
eigb
er
Geo
For
schu
ngsZ
entr
um P
otsd
am (
GF
Z)
Div
isio
n I:
Kin
emat
ics
and
Dyn
amic
s of
the
Ear
thT
eleg
rafe
nber
g14
473
Pot
sdam
Sta
tus
SL
R-T
rack
ing
CH
AM
P M
issi
on
C H
A M
P
Inte
rnat
iona
l Las
er R
angi
ng S
ervi
ce -
Gen
eral
Ass
embl
y, O
ctob
er 2
002
Was
hing
top
D.C
., U
SA
Sta
tus
•C
HA
MP
is m
ore
than
2 y
ears
in s
pace
. All
syst
ems
are
runn
ing
smoo
thly
. The
scie
ntifi
c in
stru
men
ts -
exc
ept t
he r
adia
l cha
nnel
of t
he a
ccel
erom
eter
- p
erfo
rmno
min
ally
. Sci
entif
ic in
stru
men
ts a
re in
sci
ence
dat
a co
llect
ion
mod
e.
•B
ased
on
the
data
from
the
onbo
ard
GP
S r
ecei
ver
- a
new
cla
ss o
f the
sta
tic lo
ng-w
avel
engt
h gr
avity
fiel
d ha
s be
en c
ompu
ted
(E
IGE
N
mod
els)
. With
the
dat
a co
llect
ed a
nd fu
ture
dat
a se
ts th
e te
mpo
ral v
aria
bilit
y of
the
lon
g-w
avel
engt
h pa
rt b
ecom
es d
etec
tabl
e.
- ac
cura
te g
loba
lly d
istr
ibut
ed a
tmos
pher
ic p
rofil
es (
tem
pera
ture
, hum
idity
) ar
e r
outin
ely
gene
rate
d to
be
assi
mila
ted
in w
eath
er p
redi
ctio
n m
odel
s.
•B
ased
on
the
data
from
the
mag
neto
met
er in
stru
men
ts o
nboa
rd C
HA
MP
acc
urat
ean
d ho
mog
eneo
us m
aps
of th
e E
arth
‘s m
agne
tic fi
eld
are
gene
rate
d.
C H
A M
P
Inte
rnat
iona
l Las
er R
angi
ng S
ervi
ce -
Gen
eral
Ass
embl
y, O
ctob
er 2
002
Was
hing
top
D.C
., U
SA
1970
1990
1976
1981
1995
1999
2001
12345G
RIM
2
GR
IM3
GR
IM4-
S4
GR
IM5-
S1
EIG
EN
1980
GR
IM1
2000
1974
Geoid Mean Difference [m]
0
2002
Geo
id D
iffe
ren
ces
to A
ltim
etry
5°
x 5
° B
lock
s
C H
A M
P
Inte
rnat
iona
l Las
er R
angi
ng S
ervi
ce -
Gen
eral
Ass
embl
y, O
ctob
er 2
002
Was
hing
top
D.C
., U
SA
Rol
e of
SLR
Dat
a
•G
FZ
orb
it pr
edic
tions
are
bas
ed o
n ep
hem
eris
from
GP
S n
avig
atio
n so
lutio
n an
dth
e m
ore
accu
rate
SLR
dat
a.
•R
outin
ely
used
for
the
valid
atio
n of
the
data
of t
he o
nboa
rd G
PS
rec
eive
r in
PO
D.
•S
LR d
ata
is v
alua
ble
data
for
the
qual
ity c
ontr
ol o
f gra
vity
fiel
d re
cove
ry fr
omC
HA
MP
mic
row
ave
trac
king
dat
a.
Exa
mp
le: o
rbita
l fit
of S
LR d
ata
for
26 1
4-h
CH
AM
P a
rcs
in M
ay, 2
002
Mod
elS
LR-R
MS
[cm
]G
RIM
5-C
1.ex
tend
ed *
)(7
0 x
70)
8.6
EIG
EN
-2S
P *
*)(7
0 x
70)
8.2
EIG
EN
-2S
P(1
20 x
120
)7.
4
*)
GR
IM5-
C1.
exte
nded
= G
RIM
5-C
1 (G
RIM
5-S
1 pl
us t
erre
str.
dat
a) +
2 m
onth
s C
HA
MP
dat
a (c
omb.
mod
el)
**)
EIG
EN
-2S
P =
pre
limin
ary,
iter
ated
ver
sion
of t
he o
ffici
al E
IGE
N-1
S m
odel
(sa
telli
te-o
nly)
C H
A M
P
Inte
rnat
iona
l Las
er R
angi
ng S
ervi
ce -
Gen
eral
Ass
embl
y, O
ctob
er 2
002
Was
hing
top
D.C
., U
SA
SLR
-Tra
ckin
g Ju
l. 20
00 -
Sep
t. 2
4, 2
002
C H
A M
P
Inte
rnat
iona
l Las
er R
angi
ng S
ervi
ce -
Gen
eral
Ass
embl
y, O
ctob
er 2
002
Was
hing
top
D.C
., U
SA
•O
vera
ll tr
acki
ng s
tatis
tics
quite
sat
isfa
ctor
y fo
r th
e C
HA
MP
mis
sion
.
•O
vera
ll tr
acki
ng s
tatis
tics
indi
cate
ade
quat
e ac
cura
cy o
f G
FZ
orb
it pr
edic
tions
.
•S
LR d
ata
play
s an
impo
rtan
t rol
e:
- fo
r th
e ge
nera
tion
of a
ccur
ate
orbi
t pre
dict
ions
,
- fo
r th
e c
ontin
uous
val
idat
ion
of th
e m
icro
wav
e tr
acki
ng s
yste
ms
onbo
ard
the
CH
AM
P s
atel
lite
and
- fo
r th
e qu
ality
con
trol
of g
ravi
ty fi
eld
reco
very
.
= >
co
nti
nu
ed i
nte
nsi
ve S
LR
su
pp
ort
is r
equ
este
d
Sum
mar
y
E R
S -
2
Inte
rnat
iona
l Las
er R
angi
ng S
ervi
ce -
Gen
eral
Ass
embl
y, O
ctob
er 2
002
Was
hing
top
D.C
., U
SA
L. G
runw
aldt
, F.-
H.
Mas
sman
n, C
h. R
eigb
er
Geo
For
schu
ngsZ
entr
um P
otsd
am (
GF
Z)
Div
isio
n I:
Kin
emat
ics
and
Dyn
amic
s of
the
Ear
thT
eleg
rafe
nber
g14
473
Pot
sdam
Sta
tus
SL
R-T
rack
ing
ER
S-2
Mis
sio
n
E R
S -
2
Inte
rnat
iona
l Las
er R
angi
ng S
ervi
ce -
Gen
eral
Ass
embl
y, O
ctob
er 2
002
Was
hing
top
D.C
., U
SA
Mis
sio
n S
tatu
s
•E
RS
-2 i
s n
ow
ab
ou
t 7.
5 ye
ars
in o
rbit
.
•In
gen
eral
th
e sa
telli
te a
nd
th
e p
aylo
ad a
re i
n g
oo
d c
on
dit
ion
.
•E
SA
pla
ns
to o
per
ate
ER
S-2
till
mid
of
2004
.
Ro
le o
f S
LR
• S
LR
is
the
seco
nd
ary
trac
kin
g s
yste
m, w
hile
PR
AR
E i
s th
e p
rim
ary
on
e.
• T
he
age
of
the
PR
AR
E g
rou
nd
eq
uip
men
t, a
rep
air
bac
klo
g o
f th
e m
anu
fact
ure
rp
lus
fun
din
g d
iscu
ssio
ns
giv
e S
LR
an
in
crea
sin
g im
po
rtan
ce.
• E
RS
-2 S
LR
tra
ckin
g w
ill b
e re
qu
ired
un
til a
pp
roxi
mat
ely
mid
200
4.
E R
S -
2
Inte
rnat
iona
l Las
er R
angi
ng S
ervi
ce -
Gen
eral
Ass
embl
y, O
ctob
er 2
002
Was
hing
top
D.C
., U
SA
SL
R D
ata
Qu
anti
ty a
nd
Qu
alit
y
• In
gen
eral
th
e d
ata
amo
un
t (p
asse
s/d
ay)
is o
kay
• C
on
trib
uti
on
of
stat
ion
s ve
ryd
iffe
ren
t
• T
he
dat
a q
ual
ity
is g
oo
d
E R
S -
2
Inte
rnat
iona
l Las
er R
angi
ng S
ervi
ce -
Gen
eral
Ass
embl
y, O
ctob
er 2
002
Was
hing
top
D.C
., U
SA
E R
S -
2
Inte
rnat
iona
l Las
er R
angi
ng S
ervi
ce -
Gen
eral
Ass
embl
y, O
ctob
er 2
002
Was
hing
top
D.C
., U
SA
Ach
ieve
d R
esu
lts
Bas
ed o
n S
LR
an
d P
RA
RE
tra
ckin
g d
ata
pre
dic
ted
an
d p
reci
sio
n o
rbit
s h
ave
bee
ng
ener
ated
, wh
ich
are
use
d f
or
•G
eolo
cati
on
of
SA
R d
ata
•A
nte
nn
a st
eeri
ng
•M
issi
on
pla
nn
ing
•In
terf
ero
met
ric
SA
R p
roce
ssin
g (
DE
M,
def
orm
atio
n a
nal
ysis
)•
Sea
su
rfac
e m
on
ito
rin
g•
Ice
mas
s m
on
ito
rin
g•
Hig
h r
eso
luti
on
gra
vity
mo
del
ling
fro
m r
adar
alt
imet
er d
ata
ER
S-2
SL
R a
nd
PR
AR
E d
ata
are
also
in
corp
ora
ted
in
rec
ent
gra
vity
mo
del
s(G
RIM
-5, T
EG
3p)
Inte
rnat
iona
l Las
er R
angi
ng S
ervi
ce -
Gen
eral
Ass
embl
y, O
ctob
er 2
002
Was
hing
ton
D.C
., U
SA
L. G
runw
aldt
, R. S
chm
idt,
R. K
önig
, C
h. R
eigb
er
Geo
For
schu
ngsZ
entr
um P
otsd
am (
GF
Z)
Div
isio
n I:
Kin
emat
ics
and
Dyn
amic
s of
the
Ear
thT
eleg
rafe
nber
g14
473
Pot
sdam
Sta
tus
SL
R T
rack
ing
GR
AC
E M
issi
on
Inte
rnat
iona
l Las
er R
angi
ng S
ervi
ce -
Gen
eral
Ass
embl
y, O
ctob
er 2
002
Was
hing
ton
D.C
., U
SA
•T
he tw
in G
RA
CE
sat
ellit
es a
re 6
mon
ths
in s
pace
. T
he m
issi
on is
in c
omm
issi
onin
gph
ase
in t
rans
ition
to
calib
ratio
n/v
alid
atio
n ph
ase.
•A
ll se
nsor
s an
d in
stru
men
ts -
exc
ept t
he in
tert
ial m
easu
rem
ent u
nit o
n G
RA
CE
-1 -
are
oper
atin
g in
the
scie
nce
data
col
lect
ion
mod
e.
•A
ll sc
ient
ific
inst
rum
ents
(ac
cele
rom
eter
s, s
tar
cam
eras
, GP
S r
ecei
vers
, K-B
and-
Ran
ging
sys
tem
, Las
er R
angi
ng R
efle
ctor
) ar
e pe
rfor
min
g no
min
ally
.
•T
he S
cien
ce D
ata
Sys
tem
tea
ms
at J
PL,
UT
-CS
R a
nd G
FZ
hav
e ge
nera
ted
first
grav
ity fi
elds
bas
ed o
n G
PS
, ac
cele
rom
eter
and
K-B
and-
Ran
ging
dat
a sh
owin
gsi
gnifi
cant
impr
ovem
ents
of
grav
ity fi
eld
mod
ellin
g de
rived
from
sat
ellit
e-o
nly
data
.
•A
t G
FZ
the
gen
erat
ion
of s
tand
ard
GR
AC
E o
rbit
pred
ictio
ns b
ased
on
GP
Sna
viga
tion
solu
tion
and
SLR
dat
a is
ope
ratio
nal i
n au
tom
atic
mod
e (2
pre
dict
s/da
y).
Sta
tus
Inte
rnat
iona
l Las
er R
angi
ng S
ervi
ce -
Gen
eral
Ass
embl
y, O
ctob
er 2
002
Was
hing
ton
D.C
., U
SA
•A
t G
FZ
pre
cise
orb
it pr
edic
tions
are
gen
erat
ed fr
om G
PS
nav
igat
ion
solu
tion
and
SLR
dat
a.
Exa
mp
le: O
rbita
l fit
of p
ositi
ons
from
GP
S n
avig
atio
n so
lutio
n an
d S
LR d
ata
of o
rbit
dete
rmin
atio
n fo
r th
e ge
nera
tion
of o
rbit
pred
ictio
ns o
f G
RA
CE
-A.
Rol
e of
SLR
dat
a
Inte
rnat
iona
l Las
er R
angi
ng S
ervi
ce -
Gen
eral
Ass
embl
y, O
ctob
er 2
002
Was
hing
ton
D.C
., U
SA
•A
t G
FZ
hig
hly
dow
n-w
eigh
ted
SLR
dat
a is
use
d in
PO
D f
or g
ravi
ty f
ield
rec
over
yba
sed
on h
igh-
low
sat
ellit
e-t
o-sa
telli
te tr
acki
ng (
SS
T)
usin
g G
PS
and
low
-low
SS
Tus
ing
K-B
and-
Ran
ging
dat
a fo
r va
lidat
ion
of th
e m
icro
wav
e tr
acki
ng s
yste
ms.
Exa
mp
le: 6
x 1
.5-d
ay a
rcs
for
GR
AC
E-A
&B
in A
pril/
May
afte
r (b
efor
e) fi
rst
grav
ityfie
ld r
ecov
ery
(SLR
dat
a no
t in
clud
ed)
Rol
e of
SLR
dat
a
RM
Saf
ter
befo
re
SLR
(σ
= 5
0 m
)[c
m]
7.6
16.
4
Inte
rnat
iona
l Las
er R
angi
ng S
ervi
ce -
Gen
eral
Ass
embl
y, O
ctob
er 2
002
Was
hing
ton
D.C
., U
SA
GR
AC
E S
LR-T
rack
ing
Mar
.- S
ep. 2
4, 2
002
•T
otal
128
5 pa
sses
(G
RA
CE
-A: 7
04,
GR
AC
E-B
: 581
).
•G
ood
amou
nt o
f da
ta p
er m
onth
and
per
sate
llite
(as
of
Apr
. 200
2 in
gene
ral m
ore
than
100
pas
s/m
onth
)
•U
ntil
Aug
. 200
2 st
rong
er tr
acki
ng o
fG
RA
CE
-A.
•F
irst
time
bala
nced
trac
king
in A
ug.
2002
.
Inte
rnat
iona
l Las
er R
angi
ng S
ervi
ce -
Gen
eral
Ass
embl
y, O
ctob
er 2
002
Was
hing
ton
D.C
., U
SA
•T
otal
25
ILR
S s
tatio
ns.
•O
verv
all s
umm
ary
stat
istic
s sh
owun
bala
nced
tra
ckin
g pe
r st
atio
n fo
rth
e tw
o G
RA
CE
-sat
ellit
es, h
owev
eras
of A
ug. 2
002
stat
istic
sho
wba
lanc
ed t
rack
ing
for
the
maj
ority
of
the
stat
ions
.
GR
AC
E S
LR-T
rack
ing
Mar
.- S
ep. 2
4, 2
002
Inte
rnat
iona
l Las
er R
angi
ng S
ervi
ce -
Gen
eral
Ass
embl
y, O
ctob
er 2
002
Was
hing
ton
D.C
., U
SA
•O
vera
ll tr
acki
ng s
tatis
tics
quite
sat
isfa
ctor
y fo
r th
e G
RA
CE
mis
sion
. Sin
ce A
ug. 2
002
num
ber
of o
bser
vatio
ns fo
r in
divi
dual
spa
cecr
afts
is g
ettin
g ba
lanc
ed.
•O
vera
ll tr
acki
ng s
tatis
tics
indi
cate
ade
quat
e ac
cura
cy o
f G
FZ
orb
it pr
edic
tions
.
•S
LR d
ata
play
s an
impo
rtan
t rol
e:
- fo
r th
e ge
nera
tion
of a
ccur
ate
orbi
t pre
dict
ions
,
- fo
r th
e ca
libra
tion
/val
idat
ion
of th
e m
icro
wav
e tr
acki
ng s
yste
ms
onbo
ard
the
GR
AC
E s
atel
lites
and
- fo
r th
e qu
ality
con
trol
of g
ravi
ty fi
eld
reco
very
.
= >
co
nti
nu
ed i
nte
nsi
ve S
LR
su
pp
ort
is r
equ
este
d
Sum
mar
y
Etalon campaign
Purpose Improvement EOP solutions Improvement GM Improvement station characterization
Time-span April 2001 – April 2002 May 2002 – October 2002
Observations
Results (JCET)LAGEOS LAGEOS + Etalon
----------------------------------------------------------------------
rms x-pole [mas] 0.525 0.488rms y-pole [mas] 0.504 0.506rms LOD [ms] 0.162 0.099
October 2002 =>
Inte
rnat
iona
l Las
er R
angi
ng W
orks
hop
Oct
ober
7-1
1, 2
002
SLR
Per
form
ance
on
TO
PE
X/P
osei
don,
Jaso
n-1
and
GR
AC
E
Tra
ckin
g o
f T
/P a
nd
Jas
on
-1 a
vera
gin
g m
ore
th
at 1
6 p
asse
so
f g
oo
d d
ata
per
day
(15
/day
was
mis
sio
n g
oal
)•
Co
vera
ge
is g
oo
d in
sp
ite
of
clo
se p
roxi
mit
y o
f T
/P a
nd
Jas
on
-1•
Jaso
n-1
LR
A d
esig
n s
up
po
rts
hig
her
pre
cisi
on
SL
R–
Jaso
n-1
: 18
mm
fit
RM
S, 4
mm
pre
cisi
on
, -2
mm
bia
s (2
48 d
ay a
vera
ge)
–T
/P:
24 m
m f
it R
MS
, 7 m
m p
reci
sio
n, -
2 m
m b
ias
(200
day
ave
rag
e)
•S
LR
rem
ain
s a
crit
ical
co
mp
on
ent
of
alti
met
er s
atel
lite
PO
D, f
or
bo
th a
ccu
rate
orb
it c
ente
rin
g a
nd
acc
ura
cy a
sses
smen
t
GR
AC
E-A
an
d G
RA
CE
-B t
rack
ed 3
-4 t
imes
per
day
on
aver
age
•6-
7 cm
SL
R R
MS
co
nsi
sten
t w
ith
exp
ecte
d o
rbit
err
or
usi
ng
GR
AC
Eg
ravi
ty m
od
el–
Ad
equ
ate
for
po
st-f
it o
rbit
qu
alit
y as
sess
men
ts m
ost
day
s
•~
6 cm
Z-b
ias
app
aren
t in
cen
ter-
of-
mas
s o
ffse
t co
rrec
tio
n b
ein
gin
vest
igat
ed
Met
eor
3M /
SA
GE
III I
LR
S M
issi
on
Su
pp
ort
Met
eor
3M /
SAG
E I
II M
issi
on O
verv
iew
IPIE
(R
ussi
a) E
xper
imen
tal R
efle
ctor
Ref
lect
ors:
1 (
glas
s ba
ll)O
rbit:
Sun
syn
chro
nous
(ne
ar p
olar
)In
clin
atio
n: 9
9.64
Ecc
entr
icity
: 0.0
024
Peri
gee:
1,0
12km
Peri
od: 1
05 m
inut
es
The
IL
RS
is p
rovi
ding
acc
urat
eor
bit
data
to
mit
igat
e th
e fa
ilure
of a
n on
-boa
rd G
PS/
GL
ON
ASS
rec
eive
r
Thi
s da
ta is
req
uire
d fo
r ac
cura
teSA
GE
III
sci
enti
fic
resu
lts
Met
eor
3M /
SA
GE
III I
LR
S M
issi
on
Su
pp
ort
Ope
ratio
nal s
uppo
rt b
egan
May
7 2
002
Stat
istic
s th
roug
h 9/
23/2
002:
21 p
artic
ipat
ing
ILR
S st
atio
ns25
4 L
aser
Tra
ckin
g Se
ssio
ns
Lea
ding
Sta
tions
:•
Her
stm
once
ux –
46
sess
ions
• Y
arra
gade
e –
45 s
essi
ons
• M
onum
ent P
eak
– 30
ses
sion
s•
Gra
z –
28 s
essi
ons
• S
an F
erna
ndo
– 23
ses
sion
s•
Sch
elko
vo*
– 65
ses
sion
s
* Sc
helk
ovo
(Rus
sia)
mea
sure
men
ts w
ere
not s
ubm
itted
to I
LR
S bu
t wer
e us
ed f
or o
rbit
dete
rmin
atio
n
ILR
S su
ppor
t ha
s be
en o
utst
andi
ng
Met
eor
3M /
SA
GE
III I
LR
S M
issi
on
Su
pp
ort
Ope
ratio
ns D
ata
Proc
essi
ng C
ente
r: M
CC
-M (
Kor
olev
, Rus
sia)
• D
aily
orb
it de
term
inat
ion
• 24
– h
our
orbi
t pre
dict
ion
• Pr
epar
atio
n of
IR
V s
ets
• D
istr
ibut
ion
of I
RV
S to
par
ticip
atin
g st
atio
ns (
emai
l)
Def
initi
ve O
rbit
Proc
essi
ng C
ente
r: N
ASA
GSF
C
• IL
RS
data
Pro
cess
ed o
n w
eekl
y ba
sis
• 7-
day
arcs
• T
ypic
al o
rbit
accu
racy
< 4
met
ers
Dat
a P
roce
ssin
g
Met
eor
3M /
SA
GE
III I
LR
S M
issi
on
su
pp
ort
Con
clus
ion
Plea
se c
ontin
ue to
reg
ular
ly tr
ack
Met
eor
3M
Tha
nks!
Upcoming Missions
ILR
S M
ee
ting
, 7-1
1 O
cto
be
r 200
2/ W
ash
ing
ton
D.C
.
NA
SDA
-ILR
S-00
07
AD
EOS-
II M
issio
n S
tatu
s
Ma
ki M
AED
A
Flig
ht
Dyn
am
ics
Gro
up
Off
ice
of
Sate
llite
Te
ch
no
log
y, R
ese
arc
h a
nd
Ap
plic
atio
ns
Sate
llite
Miss
ion
Op
era
tion
s D
ep
art
me
nt
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tion
al S
pa
ce
De
velo
pm
en
t A
ge
nc
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pa
n
ILR
S M
ee
ting
, 7-1
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cto
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r 200
2/ W
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ing
ton
D.C
.
NA
SDA
-ILR
S-00
07
The
La
test
Info
rma
tion
of A
DEO
S-II
Lau
nc
h W
ind
ow
: 1
0th
De
c 2
002
to 3
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De
c 2
002
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nc
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eh
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: H
-IIA
Lau
nc
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ite :
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eg
ash
ima
(So
uth
ern
Isla
nd
of J
ap
an
)
Lau
nc
h t
ime
: 01
H31
m –
01H
47m
(UT)
[16
min
]
ILR
S M
ee
ting
, 7-1
1 O
cto
be
r 200
2/ W
ash
ing
ton
D.C
.
NA
SDA
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S-00
07
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Ph
ase
Y-4d
ay
TIR
V o
f no
min
al o
rbit
Y+0d
ay
L+0
01:3
1(U
T)Li
ft o
ffL+
988s
ec
sep
ara
tion
of A
DEO
S-II
L+18
55se
cse
pa
ratio
n o
f Fe
dsa
tL+
1960
sec
sep
ara
tion
of W
EOS
L+20
70se
cse
pa
ratio
n o
f µ
-La
bSa
t
L+3.
5H05
:00(
UT)
1st
dist
ribu
tion
of T
IRV
sL+
7.3H
8:50
(UT)
2nd
dist
ribu
tion
of T
IRV
sY+
1da
y10
:00(
UT)
TIR
Vs
with
th
e p
red
ictio
n o
f 1st
ma
ne
uve
rY+
2da
y1s
t o
rbit
ma
ne
uve
r:
ILR
S M
ee
ting
, 7-1
1 O
cto
be
r 200
2/ W
ash
ing
ton
D.C
.
NA
SDA
-ILR
S-00
07
AD
EOS-
II SL
R t
rac
kin
g p
lan
NA
SDA
pro
po
sed
an
d a
cc
ep
ted
th
e fo
llow
ing
op
era
tion
pla
n (
Last
ILR
S m
ee
ting
at
Nic
e)
Laun
ch
Pha
se:
40 d
ays
tra
cki
ng
ca
mp
aig
n a
fte
r la
un
ch
(GLI
is u
nd
er s
afe
ty m
od
e a
void
ing
an
y sig
na
l th
rou
gh
its
ap
ert
ure
.)Ro
utin
e P
hase
:A
fte
r la
un
ch
ph
ase
, GLI
will
sta
rts
its o
bse
rva
tion
an
d s
witc
h o
ver t
o t
he
rou
tine
op
era
tion
th
rou
gh
th
e m
issio
n c
he
ck
ou
t.A
ll st
atio
n m
ust
be
su
spe
nd
ed
lase
r ra
ng
ing
to
th
e A
DEO
S-II
fro
m t
his
ph
ase
, an
d a
lso N
ASD
A w
ill in
terru
pt
de
live
r IR
V s
et
to t
he
sta
tion
at
on
ce
.If
we
ne
ed
mo
re S
LR d
ata
in ro
utin
e p
ha
se, w
e re
qu
est
to
th
e s
pe
cifi
ed
sta
tion
as
an
pa
rtia
l ca
mp
aig
n.
ILR
S M
ee
ting
, 7-1
1 O
cto
be
r 200
2/ W
ash
ing
ton
D.C
.
NA
SDA
-ILR
S-00
07
AD
EOS-
II SL
R t
rac
kin
g p
lan
du
ring
Ro
utin
e P
ha
se
Wh
en
NA
SDA
req
ue
st p
art
ial c
am
pa
ign
to
th
e s
pe
cifi
ed
sta
tion
…
1.N
ASD
A w
ill in
form
to
th
e s
tatio
n d
irec
tory
(vi
a e
-ma
il) a
bo
ut
the
pa
rtia
l ca
mp
aig
n o
ne
mo
nth
be
fore
th
e p
lan
ne
d s
ch
ed
ule
.2.
NA
SDA
will
sen
d T
IRV
s to
th
e s
tatio
n d
irec
tory
via
e-m
ail.
3.A
lso w
ith t
he
TIR
Vs,
NA
SDA
will
sen
d t
he
ava
ilab
ility
sch
ed
ule
of l
ase
rtr
an
smiss
ion
to
th
e A
DEO
S-II.
Sta
tion
s c
an
tra
nsm
it la
ser o
nly
th
isp
erio
d.
4.
Sta
tion
s se
nd
th
e Q
LNP
to N
ASD
A v
ia e
-ma
il o
r CD
DIS
/ED
C s
erv
er.
5.A
ga
in, N
ASD
A w
ill se
nd
TIR
Vs
an
d t
rac
kin
g s
ch
ed
ule
.
ILR
S M
ee
ting
, 7-1
1 O
cto
be
r 200
2/ W
ash
ing
ton
D.C
.
NA
SDA
-ILR
S-00
07
Tra
cki
ng S
che
dul
e (
sam
ple
)
NA
SDA
will
de
live
r th
e in
form
atio
n a
bo
ut
the
sch
ed
ule
of L
ASE
R t
ran
smiss
ion
to
AD
EOS-
II lik
e t
his.
Sta
tion
s p
erm
itte
d t
o S
LR o
ut
of t
his
pe
riod
.
AD
EOS-
II SL
R t
rac
kin
g p
lan
du
ring
Ro
utin
e P
ha
se
STA
TIO
N :
NA
SDA
-GU
TSFR
OM
: 20
03/0
2/10
TO :
2003
/02/
17M
AN
EUV
ER T
IME
: 200
3/02
/10
21:5
6:43
– 2
1:58
:22
(UTC
)
No
.ST
AR
T TI
ME
STO
P TI
ME
LEN
GTH
STA
RT
Ma
x El
END
Pass
es
aft
er
Az/
ElA
z/El
Az/
Elm
an
eu
ver
1.20
03/0
2/10
01:
43:4
4 2
003/
02/1
0 01
:51:
11(0
0:06
:27)
243.
3/20
.012
0.6/
59.3
101.
8/40
.52.
2003
/02/
10 0
3:10
:31
200
3/02
/10
03:1
9:27
(00:
08:5
6)56
.4 /
20.0
98
.1/7
3.2
68.5
/22.
83.
2003
/02/
11 0
1:41
:09
200
3/02
/10
01:4
9:16
(00:
08:0
7)12
2.7
/20.
0 27
5.3/
63.8
243.
3/43
.0**
***
4.20
03/0
2/11
03:
12:2
2 2
003/
02/1
0 03
:17:
33(0
0:05
:11)
156.
2 /2
0.0
229.
1/42
.525
6.1/
33.5
****
* :
:
:
:
:
:
:
Sta
tion
ma
il fo
rma
t (s
am
ple
:TBD
)
PRESENTATION TO THE ILRS WORKING GROUP
13TH INTERNATIONAL WORKSHOP ONLASER RANGING
OCTOBER 11, 2002WASHINGTON D.C.
BY
K. ELANGO
ISRO TELEMETRY, TRACKING AND COMMANDNETWORK (ISTRAC)
INDIAN SPACE RESEARCH ORGANISATION (ISRO)BANGALORE
INDIA
ISRO HAS LONG EXPERIENCE IN OPERATINGTHE FIRST GENERATION LASER SYSTEM ATKAVALUR, INDIA FOR MORE THAN A DECADE
ISRO CAN REVIVE SLR PROGRAM IN INDIA ANDBECOME PART OF THE GLOBAL SLR NETWORK
ESTABLISHING SLR STATION AT BANGALOREWILL FULFILL THE LONG STANDING GAP IN THESLR NETWORK AT THE INDIAN SUB-CONTINENT
NECESSARY SITE SELECTION CRITERIA WASCARRIED OUT AND NASA TEAM VISITED ANDAPPROVED THE SITE FOR LOCATING A SLRSTATION AT BANGALORE
A DETAILED SITE SELECTION CRITERIA REPORTWAS MADE FOR LOCATING SLR AT BANGALORE
ISRO IS ALREADY PROVIDING TTC SUPPORT TOMULTIPLE REMOTE SENSING SATELLITES USINGITS GROUND STATIONS WITHIN AND OUTSIDEINDIA
NECESSARY INFRASTRUCTURE, EXPERTISE INHARDWARE, SOFTWARE, ROUND THE CLOCKOPERATION, ORBIT DETERMINATION ETC. AREAVAILABLE IN ISRO
ISRO HAS OPERATIONAL EXPERIENCE IN ORBITDETERMINATION/POD FOR MORE THAN TWODECADES
ISRO IS ALSO OPERATING A PRARE STATIONAND A P-CODE GPS RECEIVER AT THE SAMECAMPUS, BANGALORE
BANGALORE CAN BE ELEVATED AS ONE OF THEFUNDAMENTAL REFERENCE STATIONS FORSPACE GEODESY BY LOCATING A SLR STATION
BANGALORE SITE IS ALREADY IN THEINTERNATIONAL SPACE GEODESY NETWORK(SITE NUMBER 7725)
ISRO HAS PROPOSAL TO CONDUCTINTERNATIONAL WORKSHOP ON SPACEGEODESY TO BRING THE EXPERTS ON ACOMMON PLATFORM
ISRO HAS PLANS TO FOSTER SPACE GEODESY ININDIA BY ESTABLISHING A SPACE GEODESYCENTRE. TOWARDS THIS, A GEODESY DIVISIONIS ESTABLISHED RECENTLY
TO GET ACCURATE GROUND IMAGERIES FROMREMOTE SENSING SATELLITES, ISRO HASPROPOSED TO PUT RETROREFLECTORS TO ITSFUTURE IRS MISSIONS
A DETAILED INTERNAL DESIGN REPORT IS MADEIN THIS RESPECT.
SATNAV PROGRAM (INDIAN WAAS) IS JUSTEMERGING OUT IN INDIA WITH BANGALORE ASTHE CONTROL CENTRE
Other Business
8th IL
RS G
ener
al A
ssem
bly
| W
ashi
ngto
n, D
.C.
| O
ctob
er 1
1, 2
002
| 1
ILRS
Ann
ual R
epor
t Se
ries
•20
01 IL
RS A
nnua
l Rep
ort
near
ly f
inis
hed
•Ca
ll fo
r in
put
to 2
002
ILRS
Ann
ual R
epor
t to
be
issu
ed a
fter
fir
st o
f th
e ye
ar•
Plan
s:–
Muc
h sh
orte
r re
port
(le
ss t
han
20 p
ages
tot
al)
–O
ne p
age
per
sect
ion
(add
itio
nal f
or A
WG
rep
ort)
–N
o in
divi
dual
cen
ter
repo
rts
–W
orki
ng g
roup
cha
irs,
net
wor
k co
ordi
nato
rs,
etc.
gene
rate
sum
mar
ies
•Fi
nal r
epor
t co
uld
be u
sed
for
ILRS
inpu
t to
the
CSTG
ann
ual r
epor
t
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