Abstract
Multiple and partial correlations between atmospheric noise levels at 105 kHz, 280 kHz, 1.6 MHz, and 2.9 MHz were examined. These provide a quantitative measure for the improvement in predicting the noise level at one frequency from the noise levels at a number of other frequencies rather than from that at just one frequency. The analysis also leads to the interesting result that atmospheric noise levels show properties of a Markov process in frequency domain.
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