Accession Number : AD0694858

Title :   PROPERTIES OF HIGH-LATITUDE IONOSPHERIC DUCTS DEDUCED FROM ALOUETTE II TWO-HOP ECHOES,

Corporate Author : COMMUNICATIONS RESEARCH CENTRE OTTAWA (ONTARIO)

Personal Author(s) : Muldrew,D. B. ; Hagg,E. L.

Report Date : 28 MAR 1969

Pagination or Media Count : 7

Abstract : Radio waves transmitted by the Alouette satellite can, after being reflected in the ionosphere, return to the satellite and be scattered from the satellite antennas. Some of the scattered energy will be reflected again in the ionosphere and return to the satellite, and may then be detected. From the strength of such 'two-hop' signals, it is deduced that they propagate in field-aligned cylindrical ducts or tubes. The guiding of waves by these field-aligned tubes is considerably less efficient for the ordinary wave (O wave) than for the extraordinary wave (X wave). (Author)

Descriptors :   (*METEOROLOGICAL SATELLITES, ATMOSPHERIC SOUNDING), (*RADIO TRANSMISSION, IONOSPHERIC PROPAGATION), REFLECTION, WAVEGUIDES, ANTENNAS, SCATTERING, ELECTRON DENSITY, CANADA

Subject Categories : Atmospheric Physics
      Unmanned Spacecraft
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE