Simulation Method and System Research on Phase Signal Simulation of Industrial Frequency Electromagnetic Disturbance of Large Surface Ferromagnetic Target Based on Industrial Frequency Electromagnetic Field

Most of the surface ships in the world, as well as underwater submersibles, UUVs, AUVs, etc. are built with ferromagnetic materials, and the study of their excitation in receiving IF electromagnetic waves and the secondary emission signals generated by them is a major topic in analysing and detecting ferromagnetic ship targets. The usual high-frequency electromagnetic wave (active or passive) detection of surface and underwater ships is very popular, but for very low-frequency electromagnetic waves, such as industrial frequency power grid generated by industrial frequency electromagnetic wave detection of surface and underwater ships is very scarce, the main reason is that at present for the ship for the very low-frequency electromagnetic waves of the corresponding characteristics of the unknown. For this reason, this paper analyses and researches the characteristics of the IF phase signal after the interaction between the IF electromagnetic wave and the ferromagnetic ship. The results show that the IF electromagnetic field in the role of large ferromagnetic objects, its IF electromagnetic wave phase signal will change significantly. This paper provides a theoretical basis for the detection of large surface ferromagnetic targets by IEMF.