December 1982 | NTIA Technical Report TR-82-114

HF Ground Wave Propagation Over Forested and Built-up Terrain

D. A. Hill

Abstract: An integral equation method is presented for computing the vertically polarized field strength over irregular terrain which is covered with forest, buildings, or snow. The terrain cover is modeled as an equivalent slab, and a general computer code, WAGSLAB, is developed. Numerous special cases are treated analytically, and comparisons are made with numerical results from WAGSLAB.

Keywords: irregular terrain; vertical polarization; flat earth; HF ground wave propagation; mixed path; lateral wave, slab model; spherical earth

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Disclaimer: Certain commercial equipment, components, and software may be identified in this report to specify adequately the technical aspects of the reported results. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the equipment or software identified is necessarily the best available for the particular application or uses.

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