August 1965 | NTIA Technical Report Technical Note 318
A Numerical Representation of CCIR Report 322 High Frequency (3-30 MC/S) Atmospheric Radio Noise Data
Donald L. Lucas; John D. Harper
Abstract: Geographic and frequency dependent distributions of atmospheric noise power enumerated in CCIR Report 322  are approximated by series expansions for use in electronic computers. Coefficients of Fourier series representation of worldwide geographic dependence and power series representation of both mean and decile variability of the frequency dependence are tabulated. Representative contour charts of all distributions are shown along with sample longitudinal and latitudinal variations.
Keywords: HF radio noise; computer algorithms; atmospheric noise
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