The CRC VHF/UHF propagation prediction program: Description and comparison with field-measurements
Abstract
A computer-based propagation prediction program was developed which provides an accurate, easy-to-use means of predicting coverage areas for VHF and UHF systems, for the planning of radio links, both terrestrial and air/ground, and for use in electromagnetic compatibility analysis problems. A topographic data base enables detailed path-loss or field-strength calculations to be carried out in the Ottawa area by users who need only specify the transmitter and receiver parameters and define the area in which results are required. This data base can be extended to other areas of Canada. Comparisons of predictions with measured values of path-loss show that the detailed method of prediction is significantly better than statistical techniques and is the only method capable of identifying low signal areas in the shadows of terrain obstructions.
- Publication:
-
Operational Modelling of the Aerospace Propagation Environment, Volume 1
- Pub Date:
- November 1978
- Bibcode:
- 1978omap....1.....P
- Keywords:
-
- Computer Programs;
- Radio Frequencies;
- Radio Waves;
- Wave Propagation;
- Canada;
- Graphs (Charts);
- Predictions;
- Systems Engineering;
- Terrain Analysis;
- Ultrahigh Frequencies;
- Very High Frequencies;
- Communications and Radar