空间自旋目标宽带雷达干涉三维成像方法

doi:10.7527/S1000-6893.2016.0286

电子电气工程与控制

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空间自旋目标宽带雷达干涉三维成像方法

孙玉雪^1,2, 罗迎^1,2, 张群^1,2,3, 林永照¹, 陈春晖¹

1. 空军工程大学信息与导航学院, 西安 710077;
2. 信息感知技术协同创新中心, 西安 710077;
3. 西安电子科技大学雷达信号处理重点实验室, 西安 710071

收稿日期:2016-05-04 修回日期:2016-11-04 出版日期:2017-04-15 发布日期:2016-11-15
通讯作者: 孙玉雪 E-mail:sunyuxuejiayou@163.com
基金资助:
国家自然科学基金（61571475，61471386）；中国博士后科学基金（2015M570815）

Interferometric 3D imaging for space rotating targets in wideband radar

SUN Yuxue^1,2, LUO Ying^1,2, ZHANG Qun^1,2,3, LIN Yongzhao¹, CHEN Chunhui¹

1. Information and Navigation College, Air Force Engineering University, Xi'an 710077, China;
2. Collaborative Innovation Center of Information Sensing and Understanding, Xi'an 710077, China;
3. Key Laboratory for Radar Signal Processing, Xidian University, Xi'an 710071, China

Received:2016-05-04 Revised:2016-11-04 Online:2017-04-15 Published:2016-11-15
Supported by:
National Natural Science Foundation of China (61571475, 61471386); Science Foundation for Post Doctorate of China (2015M570815)

摘要/Abstract

摘要：

空间目标三维成像可为目标的特征提取、分类与识别提供重要依据。基于L型三天线干涉成像原理，提出了一种宽带雷达条件下空间自旋目标干涉三维成像方法。首先，分析了雷达发射线性调频（LFM）信号条件下，空间自旋目标在距离-慢时间平面上的成像特点，建立了基于距离-慢时间平面的空间自旋目标干涉三维成像模型；其次，针对建立的干涉三维成像模型中，不同散射点的回波在距离-慢时间平面上会相互交叠的问题，对回波曲线分离、交叉点处理以及一维距离旁瓣的影响等进行了讨论，并给出了解决方法，从而获得目标三维图像。与已有方法相比，该方法可有效克服单基雷达三维成像无法获得目标各散射点真实三维位置以及在双/多基雷达三维成像时多部雷达回波联合处理较困难的问题。最后，仿真实验结果验证了所提方法的有效性。

关键词: 自旋目标, 干涉技术, 雷达成像, 宽带雷达, 线性调频信号, 一维距离像

Abstract:

3D imaging for space targets can provide great support for feature extraction, and target categorization and recognition. Based on three L-shaped antenna interferometric imaging principle, an interferometric method for 3D imaging of space rotating targets in wideband radar is proposed. The imaging features of space rotating targets on range-slow-time plane is analyzed when radar transmits linear frequency modulation (LFM) signals. An interferometric-processing based 3D imaging model for space rotating targets is then established. Considering the echoes of different scatters will overlap on range-slow-time plane in the model proposed, some specific issues such as echo curve separation, overlapped point disposition and the effect of high resolution range profile sidelobe on imaging are discussed, and the corresponding solutions are put forward. Generally, the method has the advantage of obtaining the real 3D position of target scatters over monostatic radar-based imaging methods, thus avoiding the difficulty in joint processing multistatic radar-based imaging methods. Simulation results verify the effectiveness of the proposed 3D imaging method.

Key words: rotating target, interference technique, radar imaging, wideband radar, chirp signal, range profile

中图分类号:

V243.2
TN957

孙玉雪, 罗迎, 张群, 林永照, 陈春晖. 空间自旋目标宽带雷达干涉三维成像方法[J]. 航空学报, 2017, 38(4): 320399-320399.

SUN Yuxue, LUO Ying, ZHANG Qun, LIN Yongzhao, CHEN Chunhui. Interferometric 3D imaging for space rotating targets in wideband radar[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(4): 320399-320399.

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E-mail：hkxb@buaa.edu.cn

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空间自旋目标宽带雷达干涉三维成像方法

Interferometric 3D imaging for space rotating targets in wideband radar

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