A model of the vertical distribution of the electron concentration in the ionosphere and its application to oblique propagation studies

Details A model of the vertical distribution of the electron concentration in the ionosphere and its application to oblique propagation studies A model of the vertical distribution of the electron concentration in the ionosphere and its application to oblique propagation studies

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jatp...50..251d&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 50, March 1988, p. 251-262. Research supported by the Defe

Physics

10

Atmospheric Models, Ionospheric Electron Density, Ionospheric Propagation, Vertical Distribution, Backscattering, Electron Density Profiles, Radar Echoes

Scientific paper

An empirical model of the vertical distribution of the electron concentration of the ionosphere based on quasi-parabolic segments is presented (QPS model). The model is quite flexible and any number of ionospheric layers, valleys and 'ledges' can be incorporated. Nevertheless, it has been found that options of an E layer, E-F valley, F1 layer and F2 layer provide models of sufficient flexibility to give a good description of true height electron concentration profiles determined from vertical incidence ionograms. In this instance, the basic input parameters required are the same as those used by the CCIR models. The QPS model's main advantage is that it can be used to obtain analytical solutions to ray parameters for propagation in spherically stratified ionospheres when the earth's magnetic field is neglected. An expression for the power of radio pulses backscattered from the earth's surface is also derived. This expression enables several effects, including those of the ionosphere, antennas and pulse length, to be readily examined. It is used, together with the QPS model, to illustrate the effects of the ionosphere and antennas on backscatter signals.

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