聚束非相干合成孔径激光成像雷达研究  

Research of Spotlight Mode Incoherently Synthetic Aperture Imaging Ladar

作　　者：严毅[1] 金晓峰[1] 孙建锋[1] 周煜[1] 刘立人[1] 

机构地区：[1]中国科学院上海光学精密机械研究所中国科学院空间激光通信与检验技术重点实验室,上海201800

出　　处：《光学学报》2012年第2期108-115,共8页Acta Optica Sinica

基　　金：国家自然科学基金(60907006)资助课题

摘　　要：反射层析激光成像雷达只能获得目标的二维轮廓像,不能对平面目标进行成像。报道了聚束模式下的非相干合成孔径激光成像雷达实验,在这种成像模式下,可以对二维平面目标进行图像重构。采用侧视观察的模式获取目标的角度-距离-强度信息,然后通过滤波反投影实现平面目标的图像重建,并进行了计算机仿真,证明了实验结果的正确性。该系统作为非相干合成孔径激光雷达的一种,实现了区别于目标轮廓的二维成像,具有一定的实际意义和使用价值。In the earlier research of reflective tomography laser imaging radar,only the silhouette image of the target rather than the image of the target plane can be reconstructed.An experiment of spotlight mode incoherently synthetic aperture imaging ladar is reported.With this method,the two-dimension image of the target plane is got.In the experiment,the angle-range-intensity data are collected in terms of the rotated side-looking incoherent projections of the target and the image is reconstructed by filtered back-projection algorithm.Computer simulation results is acquired as verification for the image reconstructed from experimental data.As a kind of incoherently synthetic aperture imaging ladar,this system has great practical significance for applications in extensive imaging fields.

关 键 词：成像系统 聚束非相干合成孔径激光成像雷达 二维平面成像 角度-距离分辨 

分 类 号：TN958.98[电子电信—信号与信息处理]