Analysis of VLF Radio Wave Propagation Characteristics and Its Influence on Underwater Platform Communication

VLF communication is one of the most effective means to command underwater platform at present. However, the reliability of VLF communication will be degraded due to various factors in the process of VLF signal propagation. In this paper, the characteristics of VLF wave propagation in earth-ionosphere waveguide are analyzed. The influence of ground electrical characteristics, ionospheric electrical characteristics and wave characteristic parameters on the communication of underwater platforms is pointed out. By studying these laws and making use of the good predictability of the VLF band, the attenuation and disturbance in the propagation process can be predicted. So we can achieve the best communication effect and improve the reliability of the underwater platform VLF communication.