A STUDY OF INTERPOLATION OF TOPOGRAPHICAL MESH-DATA TO DERIVE TERRAIN PROFILES FOR PROPAGATION PREDICTION

Abstract

This paper describes accuracy of terrain profiles which are derived from the topographical mesh data are used in a computer method for drawing a field stregth map of a broadcasting station in the VHF and UHF bands. Heights for intermediate locations must be obtained by interpolation of nearby heights. The interpolation is carried out first along a propagation path, and then across the path at key locations, such as mountain peaks.