A 3-D Pseudospectral Time-Domain Simulator for Large-Scale Electromagnetic Scattering and Radar Sounding Applications

This paper describes a 3-D Pseudospectral Time-Domain full-wave simulator for solving large-scale electromagnetic scattering problems and radar sounding applications. The simulated 3-D backscatter and bistatic scattering radar cross sections are compared with analytical solution of lossless and lossy dielectric spheres. The PSTD solver is applied to simulating the surface scattering of a Martian moon - Phobos using the MARSIS's radar characteristics and viewing geometry. Utilizing GPU parallelization, the simulation is performed on a kilometer-scale domain with enhanced efficiency in both time and memory as well as better accuracy, demonstrating its superiority in large-scale radar sounding simulations by using the full-wave method.