The Propagation Characteristics of Low-Frequency Electromagnetic Wave Cross Air-Sea

Seawater has good electrical conductivity and electromagnetic wave attenuation greatly in seawater. The long-distance information transmission based on electromagnetic wave in seawater has always been a problem of concern to everyone. The cross air-sea lateral wave propagation mode can realize efficient long-range information transmission, but the spatial distribution of cross air-sea lateral wave field and the impedance characteristics of transmitting antenna are complex. Based on low-frequency Propagation theory, the characteristics of Lateral wave propagation and impedance of transmitting antenna are analyzed to provide theoretical support for the application of lateral wave in space.