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中国科学院大学学报 ›› 2008, Vol. 25 ›› Issue (1): 101-109.DOI: 10.7523/j.issn.2095-6134.2008.1.014

• 论文 • 上一篇    下一篇

双基地合成孔径雷达扩展Chirp Scaling成像算法

张升康1,2 杨汝良1   

  1. 1中国科学院电子学研究所 北京 100080; 2中国科学院研究生院 北京 100039
  • 收稿日期:1900-01-01 修回日期:1900-01-01 发布日期:2008-01-15

An Extended Chirp Scaling Algorithm for Bistatic Synthetic Aperture Radar Imaging

Zhang Shengkang1,2 Yang Ruliang1   

  1. 1 Institute of Electronics, Chinese Academy of Sciences, Beijing, 100080; 2 Graduate School of Chinese Academy of Sciences, Beijing, 100080
  • Received:1900-01-01 Revised:1900-01-01 Published:2008-01-15

摘要: 根据传统SAR处理中的扩展CS算法原理,推导了适用于同轨迹飞行模式双基地SAR的扩展Chirp Scaling算法,解决了接收、发射分置引起的雷达响应函数从距离-方位域向二维频域变换的复杂性问题,分析了算法推导中各种误差的影响,通过计算机仿真验证了算法在小斜视角情况下,对双基地SAR数据成像的有效性。

关键词: 合成孔径雷达(SAR), 双基地合成孔径雷达(BISAR), 扩展Chirp Scaling, 成像算法

Abstract: In term of the fundamentals of traditional Extended Chirp Scaling processing, a new CS Algorithm for along track mode Bistatic Synthetic Aperture Radar is presented, based on second order approximation of range history. The complexity of 2D Fourier transformation of signal impulse response, due to receiver-transmitter separation, is settled. It is a very precision image formation algorithm for along track Bistatic SAR system with small squint angles.

Key words: Synthetic Aperture Radar(SAR), Bistatic Synthetic Aperture Radar(BiSAR), Extended Chirp Scaling (ECS), Image Formation Algorithms.

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