Electromagnetic-field relationship in anisotropic case with one or both communicating points ground-based

Abstract

The excitation of a spherical regular (in angular coordinates) anisotropic waveguide by electric and magnetic dipoles located in the ionospheric plasma or in the waveguide cavity is examined. It is shown that between the ionospheric fields of different ground-based sources oriented along the basis vectors of a spherical coordinate system there exists an elementary relationship that follows from the generalized reciprocity theorem and the boundary conditions on the earth's surface. The components of the electromagnetic-field strength of an individual ionospheric radiator on the earth's surface are also simply related. When both communicating points are ground-based, to determine the fields of the radiators it is sufficient to find the radial components of the electric and magnetic fields of radial electric and magnetic dipoles.