Calculations of equatorial scintillations at VHF and gigahertz frequencies based on a new model of the disturbed equatorial ionosphere

Details Calculations of equatorial scintillations at VHF and gigahertz frequencies based on a new model of the disturbed equatorial ionosphere Calculations of equatorial scintillations at VHF and gigahertz frequencies based on a new model of the disturbed equatorial ionosphere

Nov 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976georl...3..677c&link_type=abstract

Geophysical Research Letters, vol. 3, Nov. 1976, p. 677-680.

Computer Science

Sound

Ionospheric Disturbances, Microwave Transmission, Radio Scattering, Scintillation, Spread F, Very High Frequencies, Atmospheric Models, Atmospheric Scattering, Magnetic Equator, Plasma Density, Radar Measurement, Radio Stars, Rocket Sounding, Satellite Transmission, Screen Effect

Scientific paper

The weak scattering, thin screen theory of scintillation of radio stars and satellites has been applied, in a mathematically rigorous way, to the observations of the plasma density structure deduced from rocket and radar measurements during equatorial spread F conditions. It is shown that bottomside spread F is capable of producing moderate scintillation at VHF, but not at gigahertz frequencies. Upwelling regions of depleted plasma density however, such as those described in several recent publications, are shown to have properties that could cause intense VHF scintillations as well as scintillations in the gigahertz range.

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