Title :
Path length analyzer for digital microwave radio
Author :
Gale, D.J. ; Braun, R.M.
Author_Institution :
Dept. of Electr. & Electron. Eng., Cape Town Univ., Rondebosch, South Africa
Abstract :
An instrument is proposed that would use the tellurometer technique of T.L. Wadley (1958) to analyze the electrical length as opposed to the physical length of a microwave radio´s propagation path. The instrument can be used by the line-of-sight radio-link engineer to assess such factors as stable and turbulent atmospheric multipath, reflections from elevated ground layers, reflections from atmospheric sheets, reflections from ground or water, reflections due to inverse bending and ducting. The full extent of the usefulness of the instrument has not yet been investigated. A practical example of the analysis of the ground reflection is given. Time-domain analysis is suggested for analyzing paths under test
Keywords :
atmospheric electromagnetic wave propagation; atmospheric measuring apparatus; digital communication systems; microwave links; radiowave propagation; time-domain analysis; atmosphere; atmospheric sheets; digital microwave radio; ducting; elevated ground layers; inverse bending; line-of-sight radio-link engineer; path length analyser; radio propagation; radiowave propagation; reflections; stable atmospheric multipath; tellurometer; time domain analysis; turbulent atmospheric multipath; water; Atmospheric measurements; Digital communication; Frequency measurement; Instruments; Phase modulation; Power engineering and energy; Radio link; Reflection; Signal resolution; Wavelength measurement;
Conference_Titel :
Communications and Signal Processing, 1988. Proceedings., COMSIG 88. Southern African Conference on
Conference_Location :
Pretoria
Print_ISBN :
0-87942-709-4
DOI :
10.1109/COMSIG.1988.49317
