基于柱透镜的非成像式激光定向方法

探测报知激光威胁源的方向是激光告警必不可少的一项技术指标。针对目前的告警系统的缺点，提出了一种基于柱透镜的高精度激光告警方法,并采用非成像方式对来袭激光进行定向。系统由两个相互垂直的线阵结构组成，线阵结构包括柱透镜组与线阵红外焦平面阵列。告警系统通过来袭激光在线阵焦平面阵列上线斑的偏移量来确定入射激光的水平方位角和俯仰角，从而达到对来袭激光进行定向的目的。文中阐述了该方法的基本原理及系统的结构组成，进行了误差分析，并对光学系统进行了仿真实验。实验结果表明:基于该方法的激光告警系统的视场角达到16。该方法对激光告警系统在汽车、飞机以及卫星上的应用具有十分重要的指导意义。

Method for measuring laser incident direction based on cylindrical lens with non-imaging mode

Acquiring the direction information from the laser threat is one of the most crucial techniques of laser warning. This paper focused on a novel method which based on cylindrical lens and measuring laser incident direction with non-imaging mode to acquire the direction information. The laser warning system was composed of two perpendicular linear array devices, each of which included a cylindrical lens group and a linear IRFPA. The laser incident direction was defined by azimuth and pitch angle which could be calculated by the offset of line spot in the IRFPA. The principle of this method, the structure of laser system, the error analysis were mainly discussed in this paper. And a simulation was made in the end. The simulation result shows that this new kind of laser warning system can achieve pitch angle of 16 is valuable for applying laser warning system on motor vehicles, planes and satellites.