Simulation Of Radar Scattering Characteristics of A Target Located in Ground-Sea Junction Area Based on Improved SBR Algorithm

In this paper, the radar scattering characteristics of a target located in the ground-sea junction area are studied by the improved SBR algorithm. A weighted arctangent function is proposed to realize the smooth connection of the ground-sea junction area and form the ground-sea junction rough surface. Then the kd-tree-based neighborhood search algorithm, large-scale area model preprocessing and multithreaded task decomposition are introduced into Shooting and Bouncing Rays (SBR) algorithm for the purpose of reducing simulating time and improving computational efficiency. The accuracy of the improved SBR algorithm proposed in this paper is verified by comparing with the simulation results of the Multi Level Fast Multipole Method (MLFMM). Finally, the radar scattering characteristics of a target located in different backgrounds are simulated and compared with each other.