David A. Sutherland Jr.

Abstract: This report presents an analytic model implemented as the computer program of the transfer function of a wideband HF channel model for use in a hardware simulator. The transfer function is the basic input to the hardware simulator. The mathematical basis of the program and the propagation model is presented. Parameters that characterize the skywave paths of a particular HF ionospheric condition are inputs to the program. The program code is listed and documentation is provided. Graphical verification using spectrally averaged scattering functions indicates that the transfer function program performs well and should find use as both an engineering tool and as the basis for a new standard propagation model.

Keywords: HF propagation; HF channel models; channel transfer function; wideband HF; scattering function

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