多通道SAR误差估计与补偿方法及其实测数据验证  

An Approach for Multi-channel SAR Array Error Compensation and Its Verification by Measured Data

作　　者：马仑[1] 廖桂生[1] 李真芳[1] 

机构地区：[1]西安电子科技大学雷达信号处理重点实验室,西安710071

出　　处：《电子与信息学报》2009年第6期1305-1309,共5页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(60502045)资助课题

摘　　要：多通道SAR系统能够突破最小天线面积条件的约束,同时获得宽测绘带、高分辨率的SAR图像。相对于单通道SAR系统,多通道系统中存在更多的误差源,这将大大降低SAR图像的质量。利用一组三通道SAR实测数据作为实验对象,根据各种误差源对SAR成像处理的影响,对系统中可能存在的各种误差源进行了分类并给出相应补偿方法。实测数据的处理结果验证了以上方法的有效性。Multi-channel SAR system can avoid the minimum antenna area constraint, thus achieving wide swath and high resolution SAR image. There are more deleterious factors in multi-channel SAR system compared with single-channel SAR system, which may degrade the quality of SAR image greatly. In this paper, all the deleterious factors in the system are analyzed and classified according to their impact on the SAR imaging processing, and approaches of array error estimation and its compensation are presented, respectively. The validity of the proposed method is verified by experimental results of measured Tri-channel SAR data.

关 键 词：合成孔径雷达 多普勒模糊 分布式小卫星 波束形成 

分 类 号：TN958[电子电信—信号与信息处理]