Low-Frequency Electromagnetic Scattering from Surface Ship Using Moment Method

The electromagnetic scattering of targets plays a crucial role in surface target detection and localization. However, there is currently no comprehensive methodology established for underwater target electromagnetic scattering. Most researchers simplify the scattering model by approximating the target as a magnetic dipole or a cuboid, disregarding lots of detail information of the target, which potentially leads to calculation errors. Moment method was employed to solve the electromagnetic scattering between an underwater radiation antenna and a target surface ship in this paper. By utilizing modeling software and meshing software, we establish a mathematical model of the target surface ship's electromagnetic scattering, while preserving the target's relatively complete information. Conducting simulations of the model with various parameters allows us to obtain the radiation pattern of the field, the target surface ship's current distribution, and the dynamic electromagnetic scattering characteristics. Furthermore, we calculate different motion paths and obtain multi-point imaging.