| SAR实时成像中交叠FFT的有效实现 |
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| 引用本文： | 李肖冬,黄晓涛,梁甸农.SAR实时成像中交叠FFT的有效实现[J].信号处理,2001,17(1):5-7. |
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| 作者姓名： | 李肖冬 黄晓涛 梁甸农 |
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| 作者单位： | 国防科技大学电子科学与工程学院 |
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| 摘 要： | SAR实时成像处理中常采用子孔径交叠来提取算法的并行性,但为抑制栅栏旁瓣效应,需要对输入数据进行交叠处理,极大地增加了处理数据量.本文对交叠FFT的一种有效实现-Fold FFT给出了详尽分析与理解,指出这种方法是通过采用更长的滤波器阶数,来获得所要求的滤波器性能,达到减少交叠的目的.本文同时对实现时的相关问题进行了讨论.仿真结果证明了其正确性.
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| 关 键 词： | Fold FFT 实时成像 ASR处理 |
Efficient Implementation of Fold FFT in Real-Time SAR Imaging |
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| Li Xiaodong,Huang Xiaotao,LIANG Diannong.Efficient Implementation of Fold FFT in Real-Time SAR Imaging[J].Signal Processing,2001,17(1):5-7. |
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| Authors: | Li Xiaodong Huang Xiaotao LIANG Diannong |
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| Abstract: | Subaperture processing is always used to parallize the SAR real-time imaging, but input data must be overlapped to avoid grating lobes, which greatly increase the data rate. A effective realization for segment FFT is analyzed exhaustively in this paper, and some questions related are also discussed. Eventually, the simulation result prove this realization is correct. |
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| Keywords: | Fold FFT real-time imaging SAR processing |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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