Path length analyzer for digital microwave radio

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.<>