Accession Number : AD0769139

Title :   The Feasibility of a Sub-LF Satellite-to-Submarine Communication Downlink, VLF Noise Levels in the Ionosphere.

Descriptive Note : Technical rept. no. 2, 13 Dec 71-27 Nov 72,

Corporate Author : DEVELCO INC MOUNTAIN VIEW CALIF

Personal Author(s) : Dunckel,Nicholas

Report Date : 27 NOV 1972

Pagination or Media Count : 15

Abstract : The electromagnetic noise environment of satellite-borne ELF, VLF and LF receivers was investigated. Noise data obtained from a number of satellite and rocket experiments (maximum altitude 3000 km) have been reviewed and summarized. The intensity of whistlers, equatorial hiss, and man-made signals as a function of latitude, time of day and state of the ionosphere were examined and typical noise environment curves were presented. These data suggest that areas near the magnetic equator and over the polar cap provide the lowest ionospheric noise environment. (Author)

Descriptors :   (*Atmospherics, Very low frequency), (*Radio links, Very low frequency), Satellite communications, Ionosphere, Extremely low frequency, Communication satellites, Underwater communications, Submarines, Feasibility studies, Ionospheric propagation

Subject Categories : Atmospheric Physics
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE