| 引用本文： |
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尚朝轩,韩 宁,董 健,等.合作空间目标双基地ISAR图像畸变分析及校正方法[J].电讯技术，2012，52（1）： - . [点击复制]
- SHANG Chao-xuan,HAN Ning,DONG Jian,et al.Image distortion analysis and correction method of cooperative space target in bistatic ISAR[J].，2012，52（1）： - . [点击复制]
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| 摘要: |
| 为了解决双基地逆合成孔径雷达（ISAR）二维图像的畸变问题，以平稳运动的合作空间目标
为研究对象
，从双基地ISAR回波模型出发，研究了图像的畸变机理并提出了基于畸变角估计的图像畸变
校正方法。基于合作空间目标的精轨信息，算法首先估计出成像期间的双基地角，其次利用
图像畸变角与双基地角的关系对畸变角进行估计，然后利用畸变角计算横向畸变单元数，最
后对二维图像进行反向畸变补偿，完成畸变校正。仿真实验验证了算法的有效性。 |
| 关键词: 双基地ISAR 二维图像 畸变校正 空间目标 精轨信息 |
| DOI： |
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| 基金项目:国家高技术研究发展计划(863计划)项目（2008AA0194） |
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| Image distortion analysis and correction method of cooperative space target in bistatic ISAR |
| SHANG Chao-xuan,HAN Ning,DONG Jian,ZHANG Da-wei |
| () |
| Abstract: |
| The twodimensional image could be distorted in bistatic inverse synth
etic aperture radar(ISAR). To solve this problem, the distortion mechanism is st
udied and the correction method based on distortion angle estimation is put forw
ard. The study object is cooperative space target with stable motion and the res
earch starts off from the bistatic ISAR echo model. Based on the accurate orbit
information, the bistatic angle is estimated first. Then the distortion angle is
estimated based on the relationship between bistatic angle and distortion angle
,which is used to count the number of distortion cell. Finally, the twodimensi
onal image is compensated to the reverse direction to finish the distortion corr
ection. The availability of this algorithm is validated by simulation experiment
. |
| Key words: bistatic ISAR two-dimensional image distortion correction space target accura
te orbit information |
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