| 改进的SAR图像干扰抑制算法 |
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| 引用本文： | 占毅,胡东辉,雷斌.改进的SAR图像干扰抑制算法[J].电子测量技术,2012(4):90-94. |
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| 作者姓名： | 占毅 胡东辉 雷斌 |
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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;中国科学院空间信息处理与应用系统技术重点实验室 北京100190
2. 中国科学院电子学研究所 北京 100190;中国科学院空间信息处理与应用系统技术重点实验室 北京100190 |
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| 基金项目： | 航天遥感项目NKBRP |
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| 摘 要： | 合成孔径雷达(SAR)图像中出现干扰条纹是由电视、广播和各类通信系统辐射源的频率在系统带宽内,造成接受的信号中混有干扰信号。由于这些干扰通常具有高于系统背景噪声的功率电平,会对SAR造成不同的影响。在某些系统中SAR信号在距离频域沿着距离向相邻的点会具有一定的相关性。如果某些频谱值被干扰信号污染,则可以利用它周围的点估计出该频段的信息。基于这一想法,提出一种干扰抑制算法,能有效的估计出被干扰影响的频谱信息。当频谱中干扰信号所污染的频段的个数较多时,相比传统方法,这种方法能更为有效地估计出原始信号。
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| 关 键 词： | 合成孔径雷达(SAR) 干扰抑制 AR模型 Least Square |
Improved interference suppression algorithm in SAR image |
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| Zhan Yi
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Hu Donghui
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Lei Bin.Improved interference suppression algorithm in SAR image[J].Electronic Measurement Technology,2012(4):90-94. |
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| Authors: | Zhan Yi Hu Donghui Lei Bin |
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| Affiliation: | Zhan Yi Hu Donghui Lei Bin (1. Institue of Electronics,Chinese Academy of Sciences,Beijing 100190; 2. Graduate University of Chinese Academy of Sciences,Beijing 100190 3. Key Laboratory of Spatial Information Processing and Application System Technology, Chinese Academy of Sciences, Beijing 100190) |
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| Abstract: | Narrow-banded interference is becoming a main source for the degradation in synthetic aperture radar（SAR） imaging. A new interference suppression based upon estimating the interference-corrupted value of the signal in range frequency domain is proposed. This algorithm is based upon the assumption that the signal received by radar can be approximately modeled by AR process in range frequency domain. This assumption differs from traditional methods in that traditional methods usually treat SAR data as white noise. When the number of frequency bands contaminated by interference signals in the spectrum is more,the algorithm can estimate the original signal more effectively than traditional one. |
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| Keywords: | synthetic aperture radar（SAR） interference suppression autoregressive（AR） least square （LS） |
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