Ionospheric scintillation observations at Natal

Details Ionospheric scintillation observations at Natal Ionospheric scintillation observations at Natal

Sep 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.7527y&link_type=abstract

Journal of Geophysical Research, vol. 86, Sept. 1, 1981, p. 7527-7532.

Mathematics

Probability

18

Equatorial Regions, Ionospheric Propagation, Magnetic Equator, Satellite Transmission, Scintillation, Data Recording, Marisat 1 Satellite, Power Spectra, Signal Fading, Time Lag

Scientific paper

Results of ionospheric scintillation observations made at Natal, Brazil near the magnetic equator over a 2 1/2 year period are presented. Scintillation data were obtained from the reception of 254-MHz transmissions from the LES satellite and 257.55-MHz transmissions from Marisat 1. The greatest scintillation probability is obtained during the months of November and December and at local times of 2000 to 2200 hours, with a minimum probability observed during June and July. Data obtained at an east-west satellite spacing of 520 km suggests that the onset of scintillation at these two points is usually independent. Scintillation data collected with a 278-m receiver spacing have been used to calculate an eastward irregularity drift decreasing in velocity from 150 to 30 m/sec from 0000 to 0400 UT, and, in conjunction with computed power spectra and the frozen-in concept, an irregularity height of 294 km.

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