Measurements of LF and MF radio propagation over irregular, inhomogeneous terrain
Abstract
Measurements of radio propagation path loss and local ground conductivity were made over four paths in the 100 to 2000 kHz band. The paths were of lengths up to 50 km and were chosen to represent both extreme and typical topography and conductivity conditions to the U.S. The measurements were made near Canyonlands National Park in Utah, at Highland Range and Dry Lake Valley in Nevada, over the Santa Rita Range in Arizona, and across San Francisco Bay in California. The measurement results with propagation predictions made by a computer program which uses the path profile, ground conductivity and frequency as prediction parameters are presented.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- November 1978
- Bibcode:
- 1978STIN...7924247K
- Keywords:
-
- Ground Wave Propagation;
- Low Frequencies;
- Radio Transmission;
- Range (Extremes);
- Terrain;
- Computer Programs;
- Highlands;
- Plains;
- Plateaus;
- Communications and Radar