Application in low-frequency ground-wave propagation of parallel FDTD based on GPU
Application in low-frequency ground-wave propagation of parallel FDTD based on GPU
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DOI：
10.1109/isape.2012.6408922
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发表时间：
2012-10
期刊：
影响因子：
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通讯作者：
Lili Zhou;Xiaoli Xi;Yongxing Du
中科院分区：
文献类型：
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作者：
Lili Zhou;Xiaoli Xi;Yongxing Du
本文采用基于图形处理单元（GPU）的并行时域有限差分技术预测不规则地形上低频地波的传播。首先，通过对比串行时域有限差分算法对光滑地表的预测结果，对该技术进行了验证。然后，结合具体实例，分析了并行算法的加速性能。仿真结果表明：该方法可以大大提高地波远距离传播问题的计算速度。为FDTD在大尺度波传播预测中的应用提供了有效的解决方案。
The parallel FDTD technique based on the graphics processing unit (GPU) is used to predict the low-frequency (LF) ground-wave propagation over irregular terrains in this paper. First of all, through comparing the prediction results of the smooth earth computed by the serial FDTD algorithm, the technique is verified. Then, with the specific examples, the speedup performance of the parallel algorithm is analyzed. The simulation results show that: the technique can improve the calculation speed greatly for long-distance ground-wave propagation problems. It provides an effective solution for the FDTD application in the wave propagation prediction of large-scale.