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  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:1900-01-01 修回日期:1900-01-01 出版日期:2007-04-20 发布日期:2007-04-20

A Study of ISAR Imaging of Spatial Diversity Angles

WANG Qi;LI Ya-chao;XING Meng-dao;BAO Zheng

  1. (Key Lab. of Radar Signal Processing, Xidian Univ., Xi′an 710071, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-04-20 Published:2007-04-20

摘要: 提出了多视角逆合成孔径雷达(ISAR)成像方法,对不同视角回波数据子孔径内部与外部分别选用不同对齐基准的方法进行包络对齐,然后采用多特显点综合法进行自聚焦.对各个视角接收信号融合,给出了一种参数化方法与非参数化方法相结合以进行稀疏孔径外推的算法,经外推后通过方位向FFT得到目标ISAR图像,该算法可有效应用于合成孔径雷达稀疏孔径成像.

关键词: 多视角, ISAR, 超分辨

Abstract: A feasible algorithm for inverse synthetic aperture radar(ISAR) imaging of spatial diversity angles is proposed. For the interiors and exteriors of echo data sub-apertures of different visual angle, different alignment reference methods are used for envelope alignment, and then a multiple-spot integration method is used for autofocusing. For fusing received signals from various visual angles, an algorithm of using parameterization and non-parameterization combination for interpolation of the sparse aperture is given, and then the cross range FFT is used to obtain target ISAR imaging, which indicates that the algorithm can be applied in sparse aperture imaging of synthetic aperture radar(SAR). Finally the experimental data processing result is given, which demonstrates the effectiveness of the proposed algorithm.

Key words: spatial diversity angles, ISAR, superresolution


  • TN957