摘要
为解决大斜视角情况下并轨模式的CS成像误差较大的问题,基于单基地非线性CS算法采用扩展CS算法对斜视目标成像实现了改进,克服了双基地回波数据二维频域变换的困难,对高阶的耦合性进行了补偿。通过仿真验证了在斜视条件下,ECS(extend CS)算法对双基地合成孔径雷达(BiSAR)数据成像的有效性。
In case of large squint angle, the errors are so large that the chirp scaling （CS） imaging algorithm may lose its precision. To solve the problem of CS imaging algorithm, the ECS （extended CS） for squint-looking mode based on synthetic aperture radar （SAR） ＇ s nonlinear CS is presented,which is useful in bistatic synthetic aperture radar （BiSAR）. The difficulty of transform in frequency＇ s two di- mension of BiSAR echo is overcome, and the coupling of high ranks is compensated. It is a very precise image formation algorithm for cross track BiSAR system with squint angles.
出处
《现代防御技术》
北大核心
2012年第6期129-134,139,共7页
Modern Defence Technology
基金
国家自然科学基金(61172083)
