Modeling And Analysis Of Electromagnetic Scattering Characteristics Of GPU Parallel Acceleration

The efficient solution of electromagnetic scattering from complex targets is very important for radar system design and radar target recognition. Recently, the fast multipole method, as a kind of efficient method to solve the electromagnetic scattering, has been attracted much attention. In the hardware platform, for the tranditional central processor(CPU), increasing the frequency to improve the speed of computation has encountered a bottleneck since the limitation of serial processing structure. Graphics Processing Unit (GPU), which was originally used for graphic-image processing, cut a figure in the field of high performance parallel technology, and rise rapidly. At present, it has made a great breakthrough in many fields, such as computational electromagnetic, medical image, computational fluid dynamics, environmental science, petroleum exploration, astronomical computation, audio and video coding and decoding, ect.At present, most of electromagnetic simulation softwares use the CPU code as the core, the speed of calculation is slow. They do not have the characteristics of dynamic simulation or is not easy to be used. In this paper, based on the electromagnetic modeling and analysis of electrically large object and phase-separated model in the frequency domain, we study multilevel fast multipole method in the frequency domain, and use the parallel technology-GPU, which has a high degree of heat, to speed up the algorithm. We have stably simulated the radar cross section(RCS) and surface current characteristics of electrically large size and complex targets of separation process in the mode of monostatic, bistatic, sweep frequency(including a variety of radar waveform). We take the GPU code as the core and cooperate with MFC which make the dynamic display interface to complete the development of two sets of electromagnetic simulation software.Compared to the current simulation softwares(e.g. FEKO ect), the developed electromagnetic simulation software has faster computation performance. It can be applied to many complex simulation situtation with very high practical significance.