HFNET-A Computer Program to Calculate Nuclear Effects on HF/VHF Communications Systems. Volume II. User's Guide.
Topical rept. for period 1 Dec 78-30 Nov 79,
MISSION RESEARCH CORP SANTA BARBARA CA
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The HFNET computer code has been developed for the purpose of rapid analysis of nuclear effects on multiple HF to VHF radio links in a multiple nuclear burst environment. The basic philosophy behind HFNET has been to include all effects believed to be important to HFVHF communications, but to do so in a manner which gives adequate not necessarily the best accuracy while avoiding long running times or large memory requirements. In most cases the goal of producing a fast running code has resulted in simplified models. For example, the nuclear environment models in HFNET are much less elaborate than those found in detailed, state-of-the-art numerical simulations such as MICE or MELT. The HFNET phenomenology models use orders of magnitude less computer resources while still providing a time-dependent specification of nuclear debris parameters which is adequate for HF propagation effects calculations. On the other hand, the goal of being able to handle large numbers of links and bursts has forced a fairly elaborate simulation structure and sophisticated data management techniques to be incorporated in the code. These features, along with the fast running models, enable HFNET to handle problems much too large for other nuclear environment HF communications codes. Author
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