| SAR成像系统中的多视处理及多普勒调频斜率的估计 |
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| 引用本文： | 陈默,龙建忠,何小海,阮敏,陶德元.SAR成像系统中的多视处理及多普勒调频斜率的估计[J].四川大学学报(自然科学版),2005,42(6):1150-1154. |
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| 作者姓名： | 陈默 龙建忠 何小海 阮敏 陶德元 |
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| 作者单位： | 四川大学电子信息学院图象信息研究所,成都,610064 |
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| 摘 要： | 对SAR图象中纹斑噪声的统计特性进行了详细的数学推导,同时对消除纹斑噪声的成像辅助技术——多视处理进行了深入研究,并利用基于多视处理的子孔径相关算法,对SAR系统的多普勒调频斜率fR进行了估计,将其用于成像,其精度和效果都令人满意．
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| 关 键 词： | 合成孔径雷达 纹斑噪声 多视处理 多谱勒调频斜率 |
| 文章编号： | 0490-6756（2005）06-1150-05 |
| 收稿时间： | 2005-02-25 |
| 修稿时间： | 2005-02-25 |
Multiple Look Processing and Estimation of Doppler Frequency Rate fR in SAR Imaging System |
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| CHEN Mo,LONG Jian-zhong,HE Xiao-hai,RUAN Min,TAO De-yuan.Multiple Look Processing and Estimation of Doppler Frequency Rate fR in SAR Imaging System[J].Journal of Sichuan University (Natural Science Edition),2005,42(6):1150-1154. |
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| Authors: | CHEN Mo LONG Jian-zhong HE Xiao-hai RUAN Min TAO De-yuan |
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| Institution: | College of Electronics and Information, Sichuan University, Chengdu 610064, China |
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| Abstract: | The phenomenon,known as speckle noise in SAR (synthetic aperture radar) image is analyzed,its statistical characteristics are studied,and multiple look processing technique is introduced to reduce speckles.Then,the "Sub-Aperture Correlation algorithm",which is based on multiple look processing,is used for estimating the key parameters,Doppler frequency rate f_R,of SAR imaging system.Using the algorithm,satisfactory imaging results are obtained. |
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| Keywords: | synthetic aperture radar speckle noise multiple look processing Doppler {requency rate |
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