Accession Number : AD0718391

Title :   Effect of Ionospheric Depression on Long-Range Communications at Very Low Frequencies.

Descriptive Note : Final rept. Jan-Nov 70 on Phase 5,

Corporate Author : AMERICAN NUCLEONICS CORP WOODLAND HILLS CALIF

Personal Author(s) : Schwartz,Kenneth

Report Date : NOV 1970

Pagination or Media Count : 77

Abstract : The report contains detailed information on two major experimental programs, propagation over a polar ice cap and propagation across a day night transition, plus two lesser programs, a set of test data for comparison with an experimental version of the VLF propagation prediction code being developed at NEL - San Diego, and a brief investigation into the propagation behavior of the optimum mode corresponding to a vertical magnetic field with an extremely low range-attenuation rate. (Author)

Descriptors :   (*IONOSPHERIC PROPAGATION, VERY LOW FREQUENCY), POLAR REGIONS, RADIO INTERFERENCE, MODELS(SIMULATIONS), ELECTRICAL PROPERTIES, IONOSPHERIC DISTURBANCES, REFLECTION, PHASE DISTORTION, ATTENUATION

Subject Categories : Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE