July 1968 | NTIA Technical Report ERL 79-ITS 67
Prediction of Tropospheric Radio Transmission Loss Over Irregular Terrain: A Computer Method - 1968
Anita G. Longley; Philip L. Rice
Abstract: This report describes a computer method for predicting long-term median transmission loss over irregular terrain. The method is applicable for radio frequencies above 20 MHz and may be used either with detailed terrain profiles for actual paths or with profiles that are representative of median terrain characteristics for a given area. Estimates of variability in time and with location, and a method for computing service probability, are included.
Keywords: irregular terrain; transmission loss; tropospheric propagation; service probability; time availability
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