New methods of determination of the total electron content in the transverse zone.
Abstract
The paper proposes a number of new methods for the determination of total electron content in the ionosphere in the transverse zone. The methods, based on the use of the general form of the equation for describing electromagnetic wave propagation in an anisotropic plasma and on the use of ray tracing, include: (1) the two nearfrequencies method, (2) the single frequency method, (3) the two distantfrequencies method, and (4) the three frequencies method (20, 40, and 41 MHz). The reliability of the data for total electron content gradient would be improved by accurate determinations of (1) the correct order of synchronism, and (2) the residual Faraday rotation angle which gives the precise value of Faraday rotation at any point of the record, up to zones in which the quasilongitudinal approximation is valid.
 Publication:

Annales de Geophysique
 Pub Date:
 September 1976
 Bibcode:
 1976AnG....32..219K
 Keywords:

 Atmospheric Models;
 Faraday Effect;
 Ionospheric Electron Density;
 Ionospheric Propagation;
 PlasmaElectromagnetic Interaction;
 Satellite Transmission;
 Correlation;
 Radio Transmission;
 Ray Tracing;
 Temperate Regions;
 Geophysics