| 基于STFT和WT的SAR干扰抑制算法 |
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| 引用本文： | 张双喜,张磊,刘艳阳,邢孟道,保铮.基于STFT和WT的SAR干扰抑制算法[J].电子学报,2011,39(7):1581-1588. |
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| 作者姓名： | 张双喜 张磊 刘艳阳 邢孟道 保铮 |
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| 作者单位： | 西安电子科技大学雷达信号处理国家重点实验室,陕西西安,710071 |
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| 基金项目： | 武器装备预研重点基金(No.9140A21020609DZ01) |
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| 摘 要： | 窄带干扰(NBI)和宽带干扰(WBI)作为合成孔径雷达（SAR）中最为常见的两种干扰形式,它们的存在将会大幅度地降低SAR图像的质量.本文在对NBI和WBI的时频聚集性分析的基础上,提出一种联合短时傅里叶变换和小波变换的NBI和WBI抑制方法.该方法首先把SAR回波数据变换到短时傅里叶谱域再把短时傅里叶谱域数据变换到小...
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| 关 键 词： | 合成孔径雷达 窄带干扰 宽带干扰 干扰抑制 小波变换 短时傅里叶变换 |
| 收稿时间： | 2010-07-05 |
Interference Suppression Algorithm for SAR Based on Short-Time Fourier Transform and Wavelet Transform |
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| ZHANG Shuang-xi,ZHANG Lei,LIU Yan-yang,XING Meng-dao,BAO Zheng.Interference Suppression Algorithm for SAR Based on Short-Time Fourier Transform and Wavelet Transform[J].Acta Electronica Sinica,2011,39(7):1581-1588. |
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| Authors: | ZHANG Shuang-xi ZHANG Lei LIU Yan-yang XING Meng-dao BAO Zheng |
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| Affiliation: | National Key Laboratory for Radar Signal Processing,Xidian University,Xi'an,Shaanxi 710071,China |
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| Abstract: | As the two most common forms of interference in synthetic aperture radar(SAR).Narrow-band interference(NBI) and wide-band interference(WBI) significantly reduce the quality of SAR images.Based on the analysis of the time-frequency concentration of NBI and WBI,an interference suppression algorithm for SAR is proposed.In the algorithm,SAR echo data is transformed into the short time Fourier transform spectrum domain,and then it is transformed into the wavelet domain.In the wavelet domain,the constant false al... |
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| Keywords: | synthetic aperture radar(SAR) narrow-band interference(NBI) wide-band interference(WBI) interference suppression wavelet transform(WT) short time Fourier transform(STFT) |
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