| 一种SAR层析成像的RELAX改进算法 |
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| 引用本文： | 任笑真,杨汝良.一种SAR层析成像的RELAX改进算法[J].数据采集与处理,2010,25(3). |
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| 作者姓名： | 任笑真 杨汝良 |
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| 作者单位： | 1. 中国科学院电子学研究所,北京,100190;中国科学院研究生院,北京,100190
2. 中国科学院电子学研究所,北京,100190 |
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| 摘 要： | 受分辨率限制及旁瓣影响,传统的傅里叶变换方法获取合成孔径雷达层析成像(SAR tomography)高度维图像时,难以获得满意的成像结果.本文在松弛(RELAX)算法的基础上提出了一种改进算法(IRELAX)来获得SAR 层析成像的高度维像,通过Monte Carlo仿真对谱估计算法中的MUSIC,WSF,RELAX和IRELAX的性能进行了比较,结果表明本文提出的方法能够提高干涉相位估计精度,改善成像质量.
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| 关 键 词： | 合成孔径雷达层析成像 空间谱估计 松弛算法 |
Improved RELAX Algorithm for SAR Tomography |
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| Ren Xiaozhen,Yang Ruliang.Improved RELAX Algorithm for SAR Tomography[J].Journal of Data Acquisition & Processing,2010,25(3). |
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| Authors: | Ren Xiaozhen Yang Ruliang |
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| Affiliation: | Ren Xiaozhen1,2,Yang Ruliang1(1.The Institute of Electronics,Chinese Academy of Sciences,Beijing,100190,China,2.Graduate University of Chinese Academy of Sciences,China) |
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| Abstract: | The elevation imaging of SAR tomography obtained by classic FFT method is limited by the resolution and the sidelobe problem,thus the imaging result is unsatisfying.Spatial spectrum estimation methods can obtain the lower sidelobe,the narrower spectrum and the higher resolution in the elevation direction with small number of the baseline.This paper proposes an improved algorithm of the RELAX,called the IRELAX,to obtain elevation imaging.Then,the performances of MUSIC,WSF,RELAX,IRELAX are compared with that ... |
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| Keywords: | SAR tomography spatial spectrum estimation RELAX algorithm |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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