Digital terrain data support accurate determination of terrestrial transmitter coverage Terrain profiles derived from digital terrain databases form the basis of accurate path-loss calculation. Predicted UHF radar coverage based on calculations using digital terrain data. Predicted VHF transmitter coverage colour-coded for signal strength. Mobile radio coverage in the presence of fading for different types of ambient RF noise. Satellite mobile error probabilities in the presence of fading.
Results depend critically upon a good knowledge of the fading statistics.
Coherence bandwidth statistics are vital to the design of mobile communication systems. All new propagation models demand field verification before committment of resources and implementation of systems.