Analysis of the backscatter spectrum in an ionospheric modification experiment

Details Analysis of the backscatter spectrum in an ionospheric modification experiment Analysis of the backscatter spectrum in an ionospheric modification experiment

Jan 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976jgr....81..193k&link_type=abstract

Journal of Geophysical Research, vol. 81, Jan. 1, 1976, p. 193-198. NASA-supported research.

Physics

1

Backscattering, Ionospheric Heating, Magnetoionics, Plasma Spectra, Radio Frequency Heating, Incoherent Scattering, Ionospheric Propagation, Magnetohydrodynamic Waves, Radio Echoes, Radio Spectra

Scientific paper

The purpose of this study is to compare predictions of the backscatter spectrum, including effects of ionospheric inhomogeneity, with experimental observations of incoherent backscatter from an artificially heated region. Our calculations show that the strongest backscatter echo received is not from the reflection level but from a region some distance below (about 900-1100 m for an experiment carried out at Arecibo). By taking the standing wave pattern of the pump properly into account the present theory explains certain asymmetrical features of the upshifted and downshifted plasma lines in the backscatter spectrum.

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