Physical modeling of EM propagation over nonhomogeneous terrain
Abstract
The design of several mathematical groundwave propagation models in the frequency range of 4 to 5 GHz are discussed, and the experimental results compared with the corresponding theory. Specific examples are propagation over planar and curved surfaces, mixed paths, uniaxially anisotropic media, and media with an index of refraction near unity such as heavy vegetation. When using such models, instrumentation systems and field probing techniques are key factors in their success.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- July 1983
- Bibcode:
- 1983STIN...8420752K
- Keywords:
-
- Electrical Impedance;
- Ground Wave Propagation;
- Terrain Analysis;
- Topography;
- Earth Ionosphere;
- Mathematical Models;
- Microwaves;
- Reflection;
- Communications and Radar