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Digital terrain data support
accurate determination of terrestrial transmitter coverage
profiles derived from digital terrain databases form the basis of accurate
UHF radar coverage based on digital terrain data.
transmitter coverage colour-coded for signal margin. Predictions based on E-field implementation of internationally
accepted ITU models.
'smooth-earth' path loss showing regions (in red) near the horizon where
conventional prediction models break down.
Such difficulties are usually not mentioned by model developers.
radio coverage in the presence of fading for different types of ambient RF
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.
localization error ellipses for moving targets depend critically upon terrain
features and DF station/target geometry.
coverage prediction demands the use of up-to-date and internationally accepted
All new propagation and
performance models demand field verification before commitment of resources and