张晓玲,
蒲羚,
师君
电子科技大学信息与通信工程学院 ??成都 ??611731
基金项目:国家自然科学基金(61571099)，博士后面上项目基金(2015M570778)
详细信息
作者简介:明婧：明 婧(1995–)，女，四川成都人，电子科技大学硕士生，研究方向为合成孔径雷达成像。E-mail: 1519485326@qq.com
张晓玲(1964–)，女，四川成都人，博士，教授，博士生导师，研究方向为SAR成像技术、雷达探测技术。E-mail: xlzhang@uestc.edu.cn
蒲羚：蒲 羚(1991–)，四川成都人，博士生，研究方向为雷达信号处理及SAR系统。E-mail: 741176055@qq.com
师君：师 君(1979–)，男，河南南阳人，博士，副教授，博士生导师，研究方向为SAR成像技术、雷达信号处理。E-mail: shijun@uestc.edu.cn
通讯作者:明婧 ?1519485326@qq.com
中图分类号:TN957.52计量
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被引次数:0
出版历程
收稿日期:2018-09-03
修回日期:2018-12-19
PSF Analysis and Ground Test Results of a Novel Circular Array 3-D SAR System
Ming Jing,,Zhang Xiaoling,
Pu Ling,
Shi Jun
School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
Funds:The National Natural Science Foundation of China (61571099), The China Postdoctoral Science Foundation (2015M570778)
摘要
摘要:阵列合成孔径雷达(ASAR)具备3维成像能力，是3维SAR成像领域的研究热点之一。该文针对线阵SAR在高分辨率成像方面和圆周SAR在旁瓣抑制方面的问题，提出一种新型圆迹阵列合成孔径雷达(CASAR)系统用于3维高分辨率雷达成像。首先推导基于CASAR系统的点扩散函数模型，从理论上分析圆迹阵列这一新型构型在3维成像中的优势。在此基础上构建原型CASAR实验系统，通过点扩散函数仿真实验和室外实测3维CASAR成像实验验证了3维CASAR成像的有效性，与线阵SAR和圆周SAR实验结果相比，证明CASAR系统可获得3维高分辨率SAR图像以及有效的旁瓣抑制能力。
关键词:合成孔径雷达/
圆迹阵列/
3维成像/
高分辨率/
旁瓣抑制
Abstract:Array Synthetic Aperture Radar (ASAR) system radar imaging field has gained attention because of its three-dimensional (3-D) imaging ability. A novel Circular Array SAR (CASAR) system is employed for 3-D high-resolution radar imaging to overcome the drawbacks exhibited by linear array SAR in high-resolution imaging and by circular SAR in side-lobe suppression. Point Spread Function (PSF) model based on the CASAR system is derived, and the advantages of the new configuration of the circular array in 3-D imaging are theoretically analyzed. Prototype CASAR experimental system is built on the basis of the abovementioned analysis. PSF simulation experiments and outdoor 3-D CASAR imaging experiments under outdoor conditions are performed to verify performance of the CASAR system in 3-D SAR imaging. Compared imaging results acquired using linear array SAR, circular SAR, and CASAR system proves that the CASAR system has high-resolution 3-D SAR images and demonstrates effective side-lobe suppression capability.
Key words:Synthetic Aperture Radar (SAR)/
Circular array/
3-D imaging/
High-resolution/
Side-lobe suppression
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