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1 Department of Physics Department of Electronic Engineering A Snapshot of Propagation Characteristics Observed by TIGER P. L. Dyson, R. J. Norman, M.

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Presentation on theme: "1 Department of Physics Department of Electronic Engineering A Snapshot of Propagation Characteristics Observed by TIGER P. L. Dyson, R. J. Norman, M."— Presentation transcript:

1 1 Department of Physics Department of Electronic Engineering A Snapshot of Propagation Characteristics Observed by TIGER P. L. Dyson, R. J. Norman, M. L. Parkinson Department of Physics La Trobe University J. C. Devlin Department of Electronic Engineering La Trobe University J. A. Bennett Department of Electrical & Computer Systems Engineering Monash University

2 2 OIS VIS (After UMLowell) (from McNamara, 1991) Vertical Sounding

3 3 OIS VIS (After UMLowell) Ionospheric backscatter 0.5 hop B B B Ionospheric backscatter 1.5 hops 1 hop ground or sea backscatter Magnetic field lines Oblique Sounding

4 4 E F1 F2 Leading Edge Backscatter Sounding

5 5

6 6 TIGER Tasmania TIGER New Zealand Geomagnetic Pole Geographic Pole TIGER Oblique Backscatter Ionograms Beam MHz Scan Time of 6 min Repeat every 15 min Feb 2000

7 7 E F1 F2

8 8 E F1 E F2

9 9 Antenna Patterns Plus Thresholding dB

10 10 Deg

11 11

12 12

13 13

14 14

15 15

16 16


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