扫描MIMO阵列近场三维成像技术  

Near-field 3D SAR Imaging Techniques Using a Scanning MIMO Array

作　　者：高敬坤 邓彬[1] 秦玉亮[1] 王宏强[1] 黎湘[1] Gao Jingkun;Deng Bin;Qin Yuliang;Wang Hongqiang;Li Xiang(College of Electronic Science and Technology,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]国防科技大学电子科学学院,长沙410073

出　　处：《雷达学报（中英文）》2018年第6期676-684,共9页Journal of Radars

基　　金：国家自然科学基金(61871386;61701513;61571011)~~

摘　　要：基于扫描阵列的近场3维成像是合成孔径雷达(SAR)3维成像技术在民用领域的一种重要应用形式。"多发多收(MIMO)-扫描"体制是该领域一种独特的成像方式。相比于"单发单收(SISO)"阵列,MIMO阵列具有成像质量好、阵元利用率高、对天线间隔要求宽松以及成本低等特点。该文分别从信号模型、成像算法、实验系统和成像结果等方面介绍了"MIMO-平面扫"和"MIMO-柱面扫"两种成像体制。所得结果充分展现了该成像技术在许多场景中的巨大应用潜力。Near-field 3-D imaging based on a scanning array is an important application of Synthetic Aperture Radar(SAR)3-D imaging technology for civil use.Compared with Single-Input-Single-Output(SISO)arrays,a Multi-Input-Multi-Output(MIMO)scanning system is a special imaging method characterized by high imaging quality,high array efficiency,loose requirements for antenna spacing and low cost.In this paper,two imaging regimes,namely,MIMO-planar scanning and MIMO cylindrical scanning,are described in terms of signal models,imaging algorithms,experimental systems,and imaging results.The results show the great application potential of the imaging technology in various scenarios.

关 键 词：合成孔径雷达 “多发多收”阵列 近场成像 3维成像 

分 类 号：TN95[电子电信—信号与信息处理]