线阵扫描式激光成像探测系统建模与仿真

Modelling and Simulation of Laser Imaging System Based on Linear Array Detection

以激光成像引信为应用背景,在分析线阵扫描成像探测机理的基础上,建立了激光分束发射脉冲、线阵探测元接收回波信号及其检测算法、目标反射特性和大气传输效应模型,给出了固定成像视窗线阵扫描成像仿真方法.通过设置弹目交会以及各模型参数,以坦克目标为例进行了系统成像仿真.结果表明,仿真系统能够对线阵扫描成像方式进行有效模拟,生成目标的距离和强度激光仿真图像,并对影响成像效果的因素进行分析.

A simulator had been developed in the system lever to support high-speed and high-resolution scanning imaging to target.The simulation was implemented by modelling the beam-splitting emitted laser pulse,the optical signals received on the linear array detector cell,different kinds of signal processing algorithms,atmospheric effects,and the bidirectional reflectance distribution function for the reflection properties.The linear array detection principle,imaging scheme based on fixed window imaging to tank target and effect analysis were realized using various parameters in the simulator.Simulation results showed that the linear array detection applied to imaging fuze can produce the simulated 3D range and intensity images with a feature of multiple stripes pattern and effectively avoid a loss of time-efficiency while maintaining an anticipant identification probability.