Simulation and Analysis of Transient Scattering Echoes of Target Above Sea-Land Junction Area Based on TDSBR Method

In this paper, the transient scattering characteristics of target above sea-land junction area are studied based on time-domain shooting and bouncing ray (TDSBR) method. A weighted inverse tangent function is proposed to smoothly connect the sea-land junction area. To verify the efficiency and accuracy of TDSBR method, the simulation results are compared with frequency-domain shooting and bouncing ray (FDSBR) and method of moment (MOM). The calculating results show good agreement with the simulation results by these methods. Finally, the transient scattered echoes of the composite model in different conditions are simulated and analyzed.