大气条件下的激光主动成像仿真研究

基于距离选通的激光主动成像能够克服被动成像的缺点在低光照的条件下对目标清晰成像。根据成像的基本过程和模块化思想,建立了激光成像链路的7个数学模型,分别是激光发射模型、目标模型、目标和平台的运动模型、大气模型、接收光学系统模型、ICCD成像模型和噪声模型,研究了目标反射激光能量在各环节的传递情况,仿真得到了大气条件下的激光图像,通过对比分析实验图像,验证了模型的正确性。

Study on simulation of laser active imaging under atmospheric conditions

Range gated laser active imaging can overcome the disadvantage of passive imaging and get clear imaging target under weak light conditions. According to the basic processes of imaging,seven mathematical models of laser imaging chain were established,including laser emission model,target model,the target and platform motion model,atmospheric model,receiving optics model,ICCD imaging model and noise model. The transfer of laser energy through each link is studied,laser image under atmospheric conditions is simulated. Through analysis of the experimental images,the correctness of the model is verified.