1 department of physics department of electronic engineering a snapshot of propagation...
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Department of PhysicsDepartment of
Electronic Engineering
A Snapshot of Propagation Characteristics Observed by TIGER
P. L. Dyson, R. J. Norman, M. L. ParkinsonDepartment of PhysicsLa Trobe University
J. C. DevlinDepartment of Electronic Engineering
La Trobe UniversityJ. A. Bennett
Department of Electrical & Computer Systems EngineeringMonash University
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OIS
VIS
(After UMLowell)
(from McNamara, 1991)
Vertical Sounding
3
OIS
VIS
(After UMLowell)
Ionosphericbackscatter
0.5 hop
B B B
Ionosphericbackscatter
1.5 hops1 hop ground or sea backscatter
Magnetic field lines
Oblique Sounding
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E
F1
F2
Leading Edge
Backscatter Sounding
5
6
TIGERTasmania
TIGERNew Zealand
GeomagneticPole
GeographicPole
TIGER Oblique Backscatter Ionograms
Beam 48-20 MHz
Scan Time of 6 minRepeat every 15 min
19-20 Feb 2000
7
EF1
F2
8
E
F2F1
0
50
100
150
200
250
300
350
0 2 4 6 8 10
Plasma Frequency [MHz]
Hei
ght
[km
]
E
F1
F2
9
Antenna PatternsPlus Thresholding dB
10
Deg
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12
13
14
15
16