Electromagnetic scattering and imaging simulation of extremely large-scale sea-ship scene based on GPU parallel technology  

作　　者：Cheng-Wei Zhang Zhi-Qin Zhao Wei Yang Li-Lai Zhou Hai-Yu Zhu 

机构地区：[1]Southwest China Institute of Electronic Technology,Chengdu,610036,China [2]School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu,611731,China [3]Tencent Company,Shenzhen,518054,China

出　　处：《Journal of Electronic Science and Technology》2024年第2期16-23,共8页电子科技学刊（英文版）

基　　金：supported by the Opening Foundation of the Agile and Intelligence Computing Key Laboratory of Sichuan Province under Grant No.H23004;the Chengdu Municipal Science and Technology Bureau Technological Innovation R&D Project(Key Project)under Grant No.2024-YF08-00106-GX.

摘　　要：Aiming to solve the bottleneck problem of electromagnetic scattering simulation in the scenes of extremely large-scale seas and ships,a high-frequency method by using graphics processing unit(GPU)parallel acceleration technique is proposed.For the implementation of different electromagnetic methods of physical optics(PO),shooting and bouncing ray(SBR),and physical theory of diffraction(PTD),a parallel computing scheme based on the CPU-GPU parallel computing scheme is realized to balance computing tasks.Finally,a multi-GPU framework is further proposed to solve the computational difficulty caused by the massive number of ray tubes in the ray tracing process.By using the established simulation platform,signals of ships at different seas are simulated and their images are achieved as well.It is shown that the higher sea states degrade the averaged peak signal-to-noise ratio(PSNR)of radar image.

关 键 词：Multi graphics processing unit Radar imaging Sea-ship Shooting and bouncing rays 

分 类 号：TN60[电子电信—电路与系统] TP391.41[自动化与计算机技术—计算机应用技术] TP18[自动化与计算机技术—计算机科学与技术]