收发分置前视合成孔径激光雷达成像系统研究  

Study on Forward-looking SAL Imaging System

作　　者：陈磊[1] 陈殿仁[1] 刘颖[1] 

机构地区：[1]长春理工大学电子信息工程学院,长春130022

出　　处：《半导体光电》2014年第4期733-737,共5页Semiconductor Optoelectronics

摘　　要：研究了一种新型的收发分置的前视合成孔径激光雷达(SAL)成像系统。给出了系统的结构模型,分析了系统成像原理,详细推导了点目标的回波模型和适用于前视成像的距离多普勒(RD)算法,最后通过Matlab对9点目标的情况进行了成像仿真,对点目标峰值中心的128×128点切片和方位向、距离向包络进行了详细分析,结果表明该系统可以有效地对雷达前视场景进行成像。In this paper,a new type of forward-looking synthetic aperture laser radar（SAL）imaging system was studied based on one central optical element for laser transmitting and N-elements for echo receiving.Firstly,the system architecture model was given and the imaging principles were analyzed.Then the target echo model and range-doppler algorithm（RDA）were proposed for forward-looking SAL.Lastly,nine-point target imaging was simulated,128×128points slice of the target peak center and envelope of azimuth and range were analyzed in detail.Simulation results demonstrate the validity of the imaging system.

关 键 词：合成孔径激光雷达 距离多普勒 成像 前视 方位向 距离向 

分 类 号：TN957.52[电子电信—信号与信息处理]