J4 ›› 2012, Vol. 39 ›› Issue (4): 81-86.doi: 10.3969/j.issn.1001-2400.2012.04.015

• 研究论文 • 上一篇    下一篇

一种匀加速空间目标高分辨距离像补偿算法

刘红超;纠博;刘宏伟;保铮   

  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:2011-04-22 出版日期:2012-08-20 发布日期:2012-10-08
  • 通讯作者: 刘红超
  • 作者简介:刘红超(1986-),男,西安电子科技大学博士研究生,E-mail: hongchaoliu568@163.com.
  • 基金资助:

    国家自然科学基金资助项目(60901067,61001212);新世纪优秀人才支持计划资助项目(NCET-09-0630);长江学者和创新团队发展计划资助项目(IRT0954);国家部委预研项目、国家部委预研基金、中央高校基本科研业务费专项资金联合资助项目

High resolution range profile compensation algorithm for  the space target with uniform acceleration

LIU Hongchao;JIU Bo;LIU Hongwei;BAO Zheng   

  1. (National Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an  710071, China)
  • Received:2011-04-22 Online:2012-08-20 Published:2012-10-08
  • Contact: LIU Hongchao

摘要:

提出了基于立方相位函数参数估计的空间目标运动补偿方法,并推导得到了速度和加速度估计的克拉美-罗界,对该算法的估计性能进行了对比和分析.仿真表明,该方法可以在较低信噪比下实现速度和加速度的估计以及高分辨一维距离像的运动补偿,更有利于后续的ISAR成像和目标识别.

关键词: 立方相位函数, 高分辨距离像, ISAR成像, 运动补偿, 克拉美-罗界

Abstract:

By regarding the target echo as the cubic phase signal approximately, a compensation algorithm for space target based on the cubic phase function is proposed. Additionally, the Cramer-Rao bound of velocity and acceleration estimation is deduced with the purpose of evaluating the performance of the proposed algorithm. Numerical results show that the proposed algorithm can estimate the velocity and acceleration of the target and compensate the high resolution range profile under a lower signal to noise ratio,which is important for the following inverse synthetic aperture radar imaging and target recognition.

Key words: cubic phase function, high resolution range profile, inverse synthetic aperture radar imaging, motion compensation, Cramer-Rao bound

Baidu
map