逆合成孔径三维成像激光雷达研究  

Research on inverse synthetic aperture 3-D imaging LADAR

作　　者：封同安[1] 何劲[1] 张群[1,2] 杨小优[1] 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077 [2]复旦大学波散射与遥感信息国家教育部重点实验室,上海200433

出　　处：《激光与红外》2011年第10期1085-1091,共7页Laser & Infrared

基　　金：国家自然科学基金项目(No.60971100)资助

摘　　要：三维图像能准确反应目标的物理特征,提高目标识别的性能,但传统的光学三维成像技术受到扫描体制或阵元个数的限制,很难实现对运动目标的实时成像,针对这一问题,提出了一种将逆合成孔径技术、激光信号与干涉技术相结合的逆合成孔径三维成像激光雷达,给出了系统的初步设计方案,分析了成像的基本原理和实现方法,构建了模拟系统,进行了仿真分析,实验结果验证了该雷达系统的可行性和成像中的优势,最后讨论了系统实现过程中还需要解决的关键问题。Three-dimensional Image can represent target′s physical characteristic well and improve target recognition capability,but conventional optical imaging radar is limited by the array units or scan system and can not realize the imaging of moving targets.This paper combines the inverse synthetic aperture technology,laser signal and interferometric technology to suggest a new radar system which is called Inverse Synthetic Aperture 3-D Imaging LADAR.It describes the initial design of the system,analyzes the imaging theory and implement method,establishes the simulation system,finishes the imaging simulation.The simulation shows the system′s feasibility and advantage.Finally,the key problems which are needed to solve are discussed.

关 键 词：逆合成孔径技术 激光信号 干涉技术 运动目标 逆合成孔径三维成像激光雷达 实时成像 

分 类 号：TN958[电子电信—信号与信息处理]