Accession Number : AD0738846

Title :   Analysis of a Multimode Propagation Concept for Predicting VLF Signal Strengths at Night.

Descriptive Note : Research and development Jan 69-Aug 71,

Corporate Author : NAVAL ELECTRONICS LAB CENTER SAN DIEGO CALIF

Personal Author(s) : Morfitt,David G.

Report Date : 09 DEC 1971

Pagination or Media Count : 66

Abstract : It is determined that vlf signal levels can be predicted by the multimode propagation concept with pronounced accuracy along a radial path for which the ionospheric parameters have been previously determined. With increasing deviation of radial bearing angle from this path, the accuracy of predictions for other propagation radials is found to decrease. (Author)

Descriptors :   (*RADIO TRANSMISSION, VERY LOW FREQUENCY), IONOSPHERIC PROPAGATION, PREDICTIONS, ELECTRON DENSITY

Subject Categories : Radiofrequency Wave Propagation
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE