Initial results from DAMSON - a system to measure multipath, Doppler spread and Doppler shift on disturbed HF channels

• Published in: Ninth International Conference on Antennas and Propagation (ICAP)
• Main Authors: Cannon, P.S, Davies, N.C, Angling, M.J, Jodalen, V, Moreland, K.W, Lundborg, B
• Format: Conference Proceeding
• Language: English
• Published: London IEE 1995
• Subjects: Ionospheric electromagnetic wave propagation; Radio links and equipment; Radiowave propagation; DAMSON; multipath; line-of-sight system; high frequency communication systems; frequency spread characteristics; ionosphere; Doppler shift; scattering function measurement; frequency range; transmitter power; propagation environment; radio equipment; Doppler spread; signalling waveform; ionospheric electromagnetic wave propagation; disturbed HF channels; multipath channels; narrow band channel; electromagnetic wave scattering; propagation path; performance; channel sounder; HF radio propagation; Doppler and multipath sounding network; time spread characteristics; antenna gain
• ISBN: 9780852966372; 0852966377
• DOI: 10.1049/cp:19950393

The performance of beyond line-of-sight (BLOS) high frequency (HF) communication systems is dependent on how well the system is matched to the propagation environment. In this respect issues such as antenna gain and transmitter power are very important. Deserving equal or greater attention, however, is the issue of the match between the signalling waveform and the time and frequency spread characteristics of the propagation path. This paper briefly describes a channel sounder known as DAMSON (Doppler and multipath sounding network) which has been developed to characterise the disturbed narrow band channel (3 kHz) by measuring its scattering function. The real time nature of the DAMSON processing makes it unique in the frequency range but, in its approach to measuring the channel its operation is similar to that of Wagner et al. (1988). (5 pages)