| 基于并行双尺度射线追踪的海面电磁散射计算 |
| |
| 引用本文： | 孟肖,郭立新,黄青青,李娟.基于并行双尺度射线追踪的海面电磁散射计算[J].电波科学学报,2016,31(4):725-730. |
| |
| 作者姓名： | 孟肖 郭立新 黄青青 李娟 |
| |
| 作者单位： | 西安电子科技大学物理与光电工程学院, 西安 710071 |
| |
| 基金项目： | 自然科学基金杰出青年科学基金(6125002)，中央高校业务费，国家自然青年基金(61501360) |
| |
| 摘 要： | 利用一种基于双尺度模型(Two Scale Model, TSM)的射线追踪(Ray Tracing, RT)算法(TSM-RT)快速计算电大尺寸海面电磁散射, 与传统的射线追踪算法相比, 该算法能够有效减少射线与面元的求交次数, 提高了计算效率.同时, 为了进一步减少计算时间, 利用图形处理单元(Graphics Processing Unit, GPU)强大的并行处理能力对TSM-RT算法进行加速.计算结果表明:基于GPU的并行TSM-RT算法与基于CPU的串行TSM-RT算法相比计算时间有了很大程度的减少, 获得了很好的加速效果.
|
| 关 键 词： | 双尺度射线追踪(TSM-RT) GPU 并行加速 |
| 收稿时间： | 2015-07-25 |
EM scattering from the sea surface based on the parallelized two scale model ray tracing |
| |
| Affiliation: | School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China |
| |
| Abstract: | This paper aims at the fast computation of the electromagnetic scattering from the large-scale sea surface by an approximate ray tracing(RT) method which is based on the two scale model(TSM-RT). Compared with the traditional RT method, TSM-RT method can decrease the number of intersections between the rays and facets, and keep a good accuracy. Therefore the computational efficiency is greatly improved. In addition, the parallelized accelerated TSM-RT method based on the graphics processing unit(GPU) is utilized in order to further improve the efficiency. According to the computational results, it demonstrates that the computational time of the GPU-based TSM-RT method is greatly decreased compared with the CPU-based TSM-RT method, therefore a good speedup ratio is achieved. |
| |
| Keywords: | TSM-RT method GPU parallelized accelerated TSM-RT |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《电波科学学报》浏览原始摘要信息 |
|
点击此处可从《电波科学学报》下载全文 |
|
