光栅衍射型激光告警系统是一种基于光栅衍射效应、可实时探测来袭激光参量信息的光电对抗设备。为了获取入射激光的波长和入射角度, 以光栅衍射效应为基本原理, 采用面阵CCD进行图像采集、数字信号处理器进行图像处理, 并依据信号特点开发了目标识别算法。通过理论分析和实验验证, 设计出了一套基于面阵CCD的光栅衍射型激光告警系统的图像采集与处理系统, 实现了对激光目标的探测。结果表明,该系统可有效地识别来袭激光并准确标记, 具有良好的稳定性、实时性。

A grating diffraction laser warning system is a type of electro-optic countermeasure equipment based on grating diffraction, it can detect the parameter information of the incident laser in real-time. To get the wavelength and the azimuth of the incident laser, with the grating diffraction principle, the image signal was acquired by a area planar array CCD, the image processing was done by digital signal processor, and the image processing algorithms were exploited. The theory was analyzed and experimental results were verified, the image acquisition and processing of the grating diffraction laser warning system based on area planar array CCD was designed, the detection of the incident laser was realized. The experimental results show that the system can detect and mark the incident laser effectively, the system is stable and real-time.