The propagation of VLF wave in layered earth-ionosphere waveguide

In this paper, propagation of VLF wave in a layered ground model in spherical coordinate system is treated analytically. Because of the fact that the electrical parameters are not uniform, the ground is regarded as a stratified homogeneous dielectric layer. Especially in the far field of the earth-ionosphere waveguide the effects by the anisotropic magnetic field are considered. Finally, some new numerical results and discussions about the far fields are given.