雷达学报Issue(5)：556-564,9.DOI:10.3724/SP.J.1300.2014.14052
基于代价函数的通道误差校正方法
Channel Error Compensation for Multi-channel SAR Based on Cost Function
摘要
Abstract
Multi-channel in azimuth is a technique to achieve high-resolution as well as wide-swath in Synthetic Aperture Radar (SAR) systems. Channel error is inevitable in multi-channel systems and it induces blurring in subsequent SAR imagery. Existing compensation approaches are sensitive to system parameters as well as the imaging scenes. Uncertainty of the parameters impacts the validation of these algorithms. In this paper, an improved approach is presented to remove the channel error. Based on the error form, this approach models channel error as three parts: the range gain error, the pulse sampling clock error, and the transmission phase error. The range gain error and the pulse sampling clock error are removed alternately. Then the proposed approach uses cost function to estimate the transmission phase error so that it is independent from the imaging scene. Point target simulations are carried out to investigate the performance, and real data comparison experiments are carried out to verify this approach.关键词
合成孔径雷达(SAR)/多通道/通道误差校正Key words
Synthetic Aperture Radar (SAR)/Multi-channel/Channel error compensation分类
信息技术与安全科学引用本文复制引用
张磊,邓云凯,王宇,郑世超,杨亮..基于代价函数的通道误差校正方法[J].雷达学报,2014,(5):556-564,9.基金项目
Supported by the National Natural Science Foundation of China (No.61172122,61422113) （No.61172122,61422113）
