J4 ›› 2010, Vol. 37 ›› Issue (3): 469-475+519.doi: 10.3969/j.issn.1001-2400.2010.03.015

• 研究论文 • 上一篇    下一篇



  1. (西安电子科技大学 雷达信号处理重点实验室,陕西 西安  710071)
  • 收稿日期:2009-11-03 出版日期:2010-06-20 发布日期:2010-07-23
  • 通讯作者: 刘亚波
  • 作者简介:刘亚波(1984-),男,西安电子科技大学博士研究生,E-mail: liuyabo9333@163.com.
  • 基金资助:

    重点实验室基金资助项目(9140C0102100902); 博士点基金资助项目(20090203120013);西安电子科技大学基本科研业务费资助项目(空时稀缺ISAR成像方法研究)

Study on dechirp SF ISAR imaging

LIU Ya-bo;LI Jun;LI Ya-chao;XING Meng-dao   

  1. (Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an  710071, China)
  • Received:2009-11-03 Online:2010-06-20 Published:2010-07-23
  • Contact: LIU Ya-bo



关键词: 逆合成孔径雷达(ISAR), 线性调频步进雷达, 解线频调处理, 相干化处理


A new high-resolution ISAR imaging method including two coherency processing steps is presented for the linearly stepped-frequency (SF) modulated radar using the dechirp technique. First, the coherency preprocessing is applied to the echoes to estimate the target radial velocity and acceleration rate, and then these motion parameters are compensated. Second, a band coherence technique is used to adjust the residual phase error, and a high resolution range profile can be obtained by means of a time-domain band append technique. Finally, a well-focused ISAR image is obtained via the conventional ISAR imaging algorithm. Simulation results verify the effectiveness of the proposed method.

Key words: inverse synthetic aperture radar (ISAR), linearly stepped-frequency (SF) modulated radar, dechirp technique, coherence processing