J4 ›› 2014, Vol. 41 ›› Issue (3): 63-70.doi: 10.3969/j.issn.1001-2400.2014.03.010

• 研究论文 • 上一篇    下一篇

多波段SAR系统动目标检测和参数优化设计

王金伟;孙光才;吴玉峰;周峰;张子敬   

  1. (西安电子科技大学 雷达信号处理国家重点实验室,陕西 西安  710071)
  • 收稿日期:2013-06-28 出版日期:2014-06-20 发布日期:2014-07-10
  • 作者简介:王金伟(1987-),男,西安电子科技大学博士研究生,E-mail:wang_jinwei_love@126.com.
  • 基金资助:

    国家自然科学基金资助项目(11176022,61201283,61172137,61301292);新世纪优秀人才支持计划资助项目(NCET-12-0916);基本科研业务费资助项目(K5051302047, K5051202001);信息综合控制国家重点实验室资助项目(newl20080201)

Moving target detection in the multi-band SAR system and parameter optimization

WANG Jinwei;SUN Guangcai;WU Yufeng;ZHOU Feng;ZHANG Zijing   

  1. (National Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an  710071, China)
  • Received:2013-06-28 Online:2014-06-20 Published:2014-07-10

摘要:

针对传统单通道合成孔径雷达(SAR)动目标检测中存在的不足,提出了一种基于多波段的单通道SAR运动目标检测方法,该方法对方位抽取得到的两个等效通道数据进行杂波抑制,然后结合Keystone方法实现动目标的检测、参数估计与定位.并提出了多波段SAR系统参数优化设计的方法,该方法可以克服传统动目标检测系统中的速度盲区问题,从而有效提高波段的利用率和动目标的检测概率.仿真实验验证了所提方法的有效性和可行性.

关键词: 合成孔径雷达, 动目标检测, 单通道多波段

Abstract:

To overcome the shortcomings of the conventional method for moving target detection in single-channel SAR, a method for moving target detection in single-channel multi-band SAR is presented. In this method, the stationary clutter could be eliminated by using the data of the equivalent dual-channel, which is constructed by desampling the original SAR data in the azimuth direction. Then moving target detection, parameter estimation and location are accomplished with the Keystone method. Moreover, a parameter optimization method in the multi-band SAR system is presented, which could solve the problem of blind area in the velocity detectable in the traditional SAR moving target detection system. As a result, the bands utilization and moving target detectable alarm increases greatly. Finally, simulation results are presented to demonstrate the effectiveness and feasibility of the proposed method.

Key words: synthetic aperture radar (SAR), moving target indication, single-channel multi-band