January 1987 | Technical Report NTIA TR-87-212
An Updated Noise Model for Use in IONCAP
Cite This Publication
Arthur D. Spaulding and Frank G. Stewart, “An Updated Noise Model for Use in IONCAP,” Technical Report NTIA TR-87-212, U.S. Department of Commerce, National Telecommunications and Information Administration, Institute for Telecommunication Sciences, January 1987.
Abstract: This report presents an updated and improved noise model designed for use in the HF propagation prediction program, IONCAP. The model has, however, much more general applicability, since the frequency range 10 kHz to 30 MHz is covered. The report gives the history, as near as can be determined, of the existing noise routines, and then develops the updated model based on current information. The three noise sources – atmospheric, manmade, and galactic are treated and a more appropriate means of combining these three sources is developed. Examples of the use of the improved model in IONCAP are included and comparisons made with the existing model.
Keywords: atmospheric noise; galactic noise; IONCAP; man-made noise; noise model; overall operating noise threshold
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