Reflection characteristics of VLF in the anisotropic ionosphere based on impedance matrix method

Due to the influence of the applied magnetic field, the ionosphere is an anisotropic medium, which makes its reflection characteristics of the radio waves incident from the ground towards the ionosphere more complicated. The impedance matrix method is proposed to analyze the reflection characteristics of very low frequency radio waves in the anisotropic stratified ionosphere in this paper. Based on Maxwell equation, the reflection characteristics of VLF waves in anisotropic homogeneous media are analyzed, and compared with the results of traditional analytical methods, the correctness and simplicity of the application of impedance matrix method in VLF frequency band are clarified, which provides a certain reference for the study of the propagation characteristics of VLF waves.