Centre for RF Propagation and Atmospheric Research QinetiQ
 

  

CPAR home 

  • Bistatic pulse compression wideband HF sounder
  • Up to 80 kHz bandwidth
  • High performance HF software radio implementation
  • Measures scattering function and intra mode phase stability

 

Click on images to enlarge

WHISPER scattering function

Scattering function from a wideband sounding experiment used WHISPHER. A 1024 chip PN sequence was using at 61.4 kchip/s. The scattering function shows modes at delays of 2.7 ms and 4.3 ms
WHISPHER phase 2.7ms mode
2.7 ms mode
WHISPHER phase 4.3ms mode
4.3 ms mode

Intra mode phase stability for two different propagation modes over a 140-second measurement period. The phase is shown by the grey shading.


See also:
HF Channel Sounding
DAMSON – Doppler and Multipath SOunding Network


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