A REVIEW OF THE ROLE OF SURFACE REFLECTION IN MULTIPATH PROPAGATION OVER TERRESTRIAL MICROWAVE LINKS

Authors
  1. Olsen, R.L.
  2. Martin, L.
  3. Tjelta, T.
Corporate Authors
Communications Research Centre, Ottawa ONT (CAN) Dept of Communications;Centre National d'Etudes des Telecommunications, Lannion (France);Norwegian Telecommunications Administration Research Establishment, Kjeller (Norway)
Abstract
It has long been recognized that surface reflection on overwater microwave radio relay paths plays an important role in causing frequency selective multipath fading. However, there has been a tendency among many radio scientists and engineers to assume that similar but less prevalent fading on most overland paths arose mainly from multiple paths through the atmosphere. With the introduction of wide-band digital radio into microwave relay networks, the origin of selective fading has been investigated with renewed interest because of the damaging effects of distortion. There is mounting experimental and theoretical evidence that ground reflection and scattering has an important role in producing much of the selective multipath propagation effects on overland links. The paper reviews both old and new evidence, providing some new insights into the complex mixture of mechanisms involved. Some resulting implications for the design of digital radio links are also discussed.
Report Number
AGARD-CP-407-PAP-2 — @Paper presented at the Electromagnetic Wave Propagation Panel Specialists' meeting held in Ottawa, Canada, 20-24 October 1986; CONTAINED IN 88-01966
Date of publication
15 Nov 1987
Number of Pages
23
DSTKIM No
88-01964
CANDIS No
55194
Format(s):
Hardcopy

Permanent link

Document 1 of 1

Date modified: