基于chirplet的弹道目标逆合成孔径雷达回波分解

金光虎; 高勋章; 黎湘; 陈永光

doi:10.3724/SP.J.1146.2009.01142

基于chirplet的弹道目标逆合成孔径雷达回波分解

doi: 10.3724/SP.J.1146.2009.01142

金光虎^{① 高勋章,},
高勋章,
黎湘,
陈永光

基金项目:

国家自然科学基金(60872134，60402032)资助课题

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出版历程
- 收稿日期: 2009-08-28
- 修回日期: 2010-05-20
- 刊出日期: 2010-10-19

Inverse Synthetic Aperture Radar Echo Decomposition of Ballistic Target Based on Chirplet

摘要

摘要: 尾附体回波分量的分离是改善弹道目标主体ISAR成像质量的关键。该文建立了主体和尾附体的LFM回波模型，构建了慢时间域单频信号回波，分析了主体和尾附体的瞬时多普勒差异，提出了一种基于chirplet的慢时间域分解方法，将主体回波分解为若干线性调频信号，并重构了主体及尾附体回波，给出了具体实现步骤，仿真实验结果表明，ISAR成像质量较分离前有显著提高。
- ISAR /
- Chirplet /
- 进动 /
- 自旋 /
- 多普勒差异
Abstract: The radar echo separation of appendix part is the key for improving ISAR image of ballistic target. This paper establishes the echo model of ballistic target. And the Doppler difference of body and appendix part is analyzed. A new decomposition in slow-time domain is proposed. The body echo is decomposed into several LFM signal components. The echo of body and appendix is reconstructed. Explicit procedure is given. Simulation result shows that the ISAR image is much better compared to the image based on original data.
- ISAR /
- Chirplet /
- Precession /
- Spin /
- Doppler difference

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参考文献(1)

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