The role of near-critical beams in long-range short-wave transmission

Details The role of near-critical beams in long-range short-wave transmission The role of near-critical beams in long-range short-wave transmission

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ge%26ae..17.1117a&link_type=abstract

Geomagnetizm i Aeronomiia, vol. 17, Nov.-Dec. 1977, p. 1117-1119. In Russian.

Physics

Beams (Radiation), Critical Frequencies, Ionospheric Propagation, Short Wave Radio Transmission, Transhorizon Radio Propagation, Waveguides, Angles (Geometry), Antenna Arrays, Propagation Modes

Scientific paper

Transmission experiments were performed to test a combined mechanism of transhorizon short-wave transmission, where near-critical signals are trapped in the ionospheric channel and then undergo waveguide-like propagation. Data on signal arrival-angles obtained on a Siberian transhorizon path for the period October 1974 to March 1976 are analyzed to determine the existence of modes, associated with this combined mechanism. The analysis is based on the study of the arrival angle in the vertical plane as a function of the critical frequency of the layer in the region where the signal exits from the ionospheric waveguide.

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