火力与指挥控制2016，Vol.41Issue(11)：26-29,4.
基于逆合成孔径成像激光雷达的自旋小目标成像系统
Research on Imaging System for Small Spin Target Based on Inverse Synthetic Aperture Imaging Lidar
摘要
Abstract
In order to obtain clear millimeter imaging of small spin target,using inverse synthetic aperture imaging laser radar technology,image reconstruction system is designed based on the integration of distance data and direction data. High bandwidth,narrow line-width fiber lasers and modulators are used in the system,to achieve linear frequency modulation for laser pulses. According to optical heterodyne principle echo signals is collected and processed. Combined with target motion characteristics of the spin,functional equation is given containing spin component of echo signal. The component is introduced into a conventional R -D algorithm,and dimensional ISAIL image reconstruction for spin target is realized. In the experiment,millimeter aluminum is measured as small target. Target is driven by a stepping motor on the inclined turntable,to simulate target motion and spin motion. Experimental results show that when the target fixed,one-dimensional distance image is obtained from the echo energy data,consistent with the four characteristic points measured target position. When the target movement,spin parameter is substituted and data compression was completed. Finally,identify the two-dimensional ISAIL image is obtained by R-D algorithm. The system design requirements of small spin target imaging are verified.关键词
逆合成孔径成像激光雷达/图像重建/自旋运动/小目标Key words
inverse synthetic aperture imaging laser radar (ISAIL)/image reconstruction/spin motion/small target分类
信息技术与安全科学引用本文复制引用
刘智超,杨进华..基于逆合成孔径成像激光雷达的自旋小目标成像系统[J].火力与指挥控制,2016,41(11):26-29,4.基金项目
国家自然科学基金(60637010) （60637010）
吉林省教育厅"十二五"科学技术研究规划基金资助项目 （）
