Electromagnetic wave propagation in weak magnetic field water environment

Ultra-low frequency electromagnetic wave has the stable propagation characteristics, strong anti-jamming capability, small transmission attenuation and larger skin depth in the sea. Taking transmission of electromagnetic wave by non-contact way over the water to make research on the propagation of electromagnetic wave in multiple frequencies. Then respectively detecting the impact of different intensity of magnetic field for the polarization characteristics of sea echo. The point is to explore polarization rotation and attenuation characteristics of the electromagnetic wave in the sea. Furthermore combined with the weak magnetic field distribution of the target in seawater, We can discuss the possibility of non-contact detection of underwater target over the sea.