By Topic

FMCW channel sounder with digital processing for measuring the coherence of wideband HF radio links

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Salous, S. ; Yarmouk University, Department of Electrical Engineering, Irbid, Jordan

Multipath propagation, and in particular the interference between the ordinary and the extraordinary waves, places a fundamental constraint on the performance of wideband HF skywave radio links. Furthermore, the dispersive nature of ionospheric propagation causes phase nonlinearity and hence distortion of narrow pulses. In the paper an FMCW wideband sounder built for the purposes of characterising the channel is described. Spectral analysis of the audio output of the sounder via the FFT algorithm is shown to permit measurement of the amplitude/frequency function, the polarisation bandwidth, the fade rate, the fade depth and the distortion of a narrow pulse, all for a desired isolated ionospheric propagation mode. The sounder was used to collect data over an oblique path in the UK. The results of applying the FFT processing technique to the experimental data are presented.

Published in:

Communications, Radar and Signal Processing, IEE Proceedings F  (Volume:133 ,  Issue: 5 )