Estimation of radio-wave absorption on extended paths

Details Estimation of radio-wave absorption on extended paths Estimation of radio-wave absorption on extended paths

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987ge%26ae..27..222k&link_type=abstract

Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 27, Mar.-Apr. 1987, p. 222-225. In Russian.

Physics

Electromagnetic Absorption, Ionospheric Propagation, Radio Transmission, Signal Fading, Transhorizon Radio Propagation, Absorptivity, Diurnal Variations, Frequency Response

Scientific paper

A relatively simple method is proposed for the estimation of radio-wave absorption on paths of arbitrary extent and orientation, and for different operating frequencies. The method is based on the assumption that the propagation of long-range signals in a surface channel occurs in a jumpwise fashion, and on the the use of a rough function of planetary absorption distribution in the ionosphere. The results obtained include the frequency dependence of the integral absorption coefficient A on round-the-world paths; diurnal dependences of A for operating frequencies of 10 and 15 MHz; and amplitude variations of round-the-world signals at these frequencies.

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