Computer Science – Sound
Scientific paper
Aug 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ge%26ae..24..610v&link_type=abstract
Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 24, July-Aug. 1984, p. 610-613. In Russian.
Computer Science
Sound
Decametric Waves, Ionospheric Propagation, Signal Fading, Atmospheric Attenuation, F Region, Focusing, Incident Radiation, Ionospheric Sounding, Transhorizon Radio Propagation
Scientific paper
Contributions of different types of focusing to decametric-signal level in the ionosphere are evaluated quantitatively on the basis of pulsed multifrequency sounding data from the Irkutsk-Magadan (3000 km) and Pevek-Magadan (1450 km) paths. The effects of regular and irregular focusing are assessed; and it is shown that focusing near the hop distance (at the MUF) amounts to 5-7 dB in the case of reflection from the F-region and not more than 4 dB in the case of reflection from the E-layer. It is also shown that horizontal focusing reaches a value of 8 dB when Delta tends to zero and does not exceed 5 dB at a Delta value of 10 deg.
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