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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。从激光告警技术发展的角度,提出了一种采用线阵探测器利用非成像方式测定激光辐射源方向的方法。通过将多个线阵探测器在接收系统中进行布局,首先获得激光源在多个不同一维坐标方向上的角度信息;然后利用坐标转换将这些一维角度信息合成相对于接收系统的二维角度信息,最后根据激光源相对于接收系统的物像几何关系,来测定激光辐射源的方向。文中阐述了该方法的原理及基本结构组成,分析了影响定向精度的误差因素,以柱面透镜作为假想光学接收系统,通过光学分析,验证了该方法的可行性。
Detecting and reporting the direction of the laser threat source is an indispensable technical indicator for laser warning. From the perspective of the development of laser warning technology, a method of using linear detector to measure the direction of laser radiation source by non-imaging is proposed. By arranging a plurality of linear array detectors in the receiving system, angle information of the laser light source in a plurality of different one-dimensional coordinate directions is obtained first; and then the one-dimensional angular information is synthesized by using coordinate transformation in a two-dimensional Angle information, and finally the laser source relative to the reception system geometry to determine the direction of the laser radiation source. In this paper, the principle and the basic structure of the method are described. The error factors affecting the orientation accuracy are analyzed. The cylindrical lens is regarded as the hypothetical optical receiving system. The optical analysis proves the feasibility of the method.