Accession Number : AD0720318

Title :   On Statistical Multimode VLF Field Strength Predictions,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Kelly,Francis J. ; Rhoads,F. J. ; Hansen,I. P.

Report Date : 23 FEB 1971

Pagination or Media Count : 15

Abstract : A method has been derived for predicting the time availability of vlf field strengths by using the earth ionosphere waveguide model. For the present calculations the ionospheric parameters Beta and h of Wait and Spies are considered to be independent random variables. The field strengths at various distances from the transmitter are calculated as dependent random variables. The results indicate that the statistical distribution of the received field strength will vary as a function of distance from the transmitter. (Author)

Descriptors :   (*IONOSPHERIC PROPAGATION, ELECTROMAGNETIC FIELDS), MATHEMATICAL PREDICTION, VERY LOW FREQUENCY, STATISTICAL DISTRIBUTIONS

Subject Categories : Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE