A Rotation Compensation and Image Scaling Method for ISAR Targets

YE Chun-mao; LU Yao-bing; SONG Jian-she; CAO Zhe

doi:10.3969/j.iss.0372-2012-2014.03.030

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A Rotation Compensation and Image Scaling Method for ISAR Targets

更新时间：2025-07-16

- A Rotation Compensation and Image Scaling Method for ISAR Targets
- Acta Electronica Sinica Vol. 42, Issue 3, Pages: 611-615(2014)
- 作者机构：
  
  1. 北京无线电测量研究所,北京,100854
  2. 西安市第二炮兵工程大学,陕西,西安,710025
  3. 北京无线电测量研究所,北京,100854
  4. 西安市第二炮兵工程大学,陕西,西安,710025
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China (No.61271417, No.61132008)
- DOI：10.3969/j.iss.0372-2012-2014.03.030
  CLC： TN957.52
- Published：2014
- 稿件说明：
移动端阅览
YE Chun-mao, LU Yao-bing, SONG Jian-she, et al. A Rotation Compensation and Image Scaling Method for ISAR Targets[J]. Acta Electronica Sinica, 2014, 42(3): 611-615.
DOI：

YE Chun-mao, LU Yao-bing, SONG Jian-she, et al. A Rotation Compensation and Image Scaling Method for ISAR Targets[J]. Acta Electronica Sinica, 2014, 42(3): 611-615. DOI： 10.3969/j.iss.0372-2012-2014.03.030.

摘要

通过对逆合成孔径雷达（ISAR）匀速平面旋转体散射中心的距离和多普勒走动分析，提出一种ISAR目标转动速度及旋转中心估计算法，并实现目标聚焦成像.该方法通过Keystone变换补偿一阶距离走动，采用匹配处理补偿一阶多普勒走动，从而实现对非合作目标的转动补偿和聚焦成像.进而，通过图像质量评价获得目标转速和等效旋转中心联合估计.结合对目标的转动估计，提出了较完整的高分辨ISAR聚焦成像及图像尺度标定的处理流程，并分析了其应用条件.最后，通过实测飞机目标数据验证了该方法的有效性.

Abstract

For inverse synthetic aperture radar (ISAR) imaging of uniformly planar rotating objects

the characteristic of range walk and Doppler walk of a scattering center is analyzed.Thus

a method is proposed for rotation estimation and compensation.This method exploits Keystone transform to compensate for the first order range walk

and exploits matched processing to compensate for the first order Doppler walk.With the above compensation

the rotational center and velocity of a non-cooperative object may be searched.Furthermore

a complete processing scheme is formed for very high resolution ISAR imaging of non-cooperative targets

and the necessity for applying delicate imaging algorithms is investigated.Finally

experiments with some measured airplane data demonstrate the effectiveness of the proposed method.

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