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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。
A new type of front-end synthetic aperture laser radar (SAL) imaging system with transmitting and receiving is studied. The structural model of the system is given, the principle of system imaging is analyzed, the echo model of point target and the distance Doppler (RD) algorithm for forward-looking imaging are deduced in detail. Finally, the situation of 9-point target The simulation results show that this system can effectively image the radar forward-looking scene. The simulation results show that the system can effectively image the radar forward-looking scene.