| 基于GPU的图形电磁计算加速算法 |
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| 引用本文： | 杨正龙,金林,李蔚清.基于GPU的图形电磁计算加速算法[J].电子学报,2007,35(6):1056-1060. |
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| 作者姓名： | 杨正龙 金林 李蔚清 |
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| 作者单位： | 南京电子技术研究所,江苏省南京市,210013;南京理工大学计算机科学与技术学院,江苏省南京市,210094 |
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| 摘 要： | 本文利用现代图形加速卡中GPU(Graphics Process Unit)的可编程管线,实现了图形电磁计算(GRECO)方法.与原有的方法相比,在利用物理光学和物理绕射理论的基础上,计算速度提高了20倍左右.并且利用GPU实现了射线追踪算法,用于目标上多次散射的计算,使得GRECO方法可以快速计算具有凹腔结构目标的电磁散射.本方法对于目标识别和逆合成孔径成像等方面的研究具有重要的应用价值.
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| 关 键 词： | 电磁散射 图形电磁计算 图形处理单元(GPU) |
| 文章编号： | 0372-2112（2007）06-1056-05 |
| 收稿时间： | 2006-04-13 |
| 修稿时间： | 2006-04-132007-01-10 |
Accelerated GRECO Based on GPU |
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| YANG Zheng-long,JIN Lin,LI Wei-qing.Accelerated GRECO Based on GPU[J].Acta Electronica Sinica,2007,35(6):1056-1060. |
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| Authors: | YANG Zheng-long JIN Lin LI Wei-qing |
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| Affiliation: | 1. Nanjing Research Institute of Electronics Technology,Nanjing,Jiangsu 210013,China;2. Computer Science and Technology Institute of Nanjing University of Science and Technical,Nanjing,Jiangsu 210094,China |
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| Abstract: | For obtaining the electromagnetic scattering characteristic of a complex target efficiently,GRECO (Graphical Electromagnetic COmputing) is implemented by a programmable pipeline of a modern GPU (Graphics Processing Unit).The speed of the simulation can be improved up to 20 times compared with the raw GRECO.The ray tracing algorithm based on a GPU is implemented to obtain the multiple reflection contribution of a target with concave structure.This approach will redound to research works such as radar target identification and inverse synthetic aperture radar (ISAR) imaging. |
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| Keywords: | electromagnetic scattering graphical electromagnetic computing graphics process unit(GPU) |
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