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小波技术在时域有限差分法中的应用

Application of Wavelet in FDTD
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摘要 在时域有限差分法(FDTD)中利用小波变换技术进行数据压缩,提高了计算效率,同时节省计算存储空间。利用小波分解对惠更斯表面的时域切向场分布进行分解,存储经过阈值量化后的小波系数达到压缩编码的目的。在FDTD近场计算结束后,利用小波重构所得到的惠更斯表面的时域切向场分布进行近—远场变换计算散射场。结合小波变换的FDTD法计算缝隙金属平板的散射场的数值实验结果说明该方法的有效性。 An application of wavelet in FDTD compressed data, which improved the calculation efficiency and saved the memory of computers. The time domain field distribution on the surface of Huygens＇ box was decomposed using wavelet, and the quantified coefficient of the wavelet decomposition was saved. After the calculation of FDTD was finished, the time domain field distribution was reconstructed using the wavelet reconstruction. And the far field patterns were predicted by the near-to-far field transform. A metallic flat slab with a slot was employed to validate the proposed scheme.
作者 丁君 于明 郭陈江
机构地区 西北工业大学电子信息学院
出处 《系统仿真学报》 EI CAS CSCD 北大核心 2007年第17期3951-3954,共4页 Journal of System Simulation
关键词 FDTD 惠更斯表面 小波分解 小波重构 FDTD Huygens＇ surface .wavelet decomposition wavelet reconstruction
分类号 TN96 [电子电信—信号与信息处理]
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参考文献12

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系统仿真学报
2007年 第17期

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