一种加速优化的空变电磁环境FDTD算法  

Optimization Method for FDTD Algorithm Acceleration in Space-Varying Environment

作　　者：周扬[1,2] 胡圣波 ZHOU Yang;HU Sheng-bo(Institute of Intelligent Information Processing,Guizhou Normal University,Guiyang Guizhou 550001,China;Center for RFID and WSN Engineering,Department of Education Guizhou,Guiyang Guizhou 550001,China)

机构地区：[1]贵州师范大学智能信息处理研究所,贵州贵阳550001 [2]贵州省教育厅射频识别与传感网络工程中心,贵州贵阳550001

出　　处：《计算机仿真》2019年第10期243-247,共5页Computer Simulation

基　　金：国家自然科学基金(61362004)

摘　　要：针对包括海上环境在内的空变环境电波传输可视化研究问题,为提高空变环境电磁传播计算速度与精度,提出了一种加速优化的空变电磁环境FDTD算法,结合空变折射率模型推导出空变电磁传播FDTD方法,通过对FDTD方法的并行计算结构以及计算内存进行优化,实现空变环境电磁传播的加速计算.同时,为了可视化输出的需要,将计算结果绑定至VBO.实验表明,提出的方法保证了空变环境电磁传播计算精度,计算速度得到大幅度的提升,为加速空变电磁环境的可视化输出提供了重要支持.An optimization method for FDTD algorithm acceleration in space-varying environment is proposed to improve the speed and accuracy of electromagnetic propagation in space - varying environment. Combined with the space - varying refractive index model,the FDTD method for space - varying electromagnetic propagation is derived. By optimizing the parallel computing structure and computational memory of the FDTD method,the accelerated calculation of electromagnetic propagation in space - varying environment is realized. At the same time,the calculation results is bound to VBO in order to meet the needs of visual output. The simulation results show that the proposed method guarantees the accuracy of electromagnetic propagation in space - varying environment,and the calculation speed is greatly improved,which provides important support for accelerating the visual output of space - varying electromagnetic environment.

关 键 词：空变环境 结构优化 内存优化 时域有限差分法 加速计算 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]