中文摘要：

激光告警系统是一种可对来袭激光性能参数进行实时探测的光电对抗设备。基于光栅衍射效应以及DSP信号采集及处理系统，设计并实现了激光告警系统，可对激光的波长、方位进行探测、告警。对激光告警系统的硬件和软件的设计与实现进行了研究，建立了入射激光波长以及方位的数学模型，推导了激光波长以及方位角与激光衍射点的数学表达式，并对激光告警系统进行了实验研究。实验结果表明：该系统能有效探测来袭激光波长及其方位，可测波长范围为500～1100nm，方位角为±13°，波长最大偏差10nm，方位角最大误差1°。

英文摘要：

Laser warning system is a type of electro-optic countermeasure equipment, which can detect the wavelength and azimuth of the incident laser. Based on the principle of the grating diffraction, DSP signal acquirement and processing system, a laser warning system was designed and realized, which could detect the wavelength and the azimuth of the incident laser, and send out alarms. The design of hardware and software were studied in the paper, the math model of the grating diffraction was built, the math expression of the calculation of the wavelength and azimuth was deduced, then, the laser system experiment was studied. Experimental results showed that it can detect the laser and send alarms immediately, and measure laser wavelength and incident direction, the range of the wavelength and the incident is 500-1 100 nm and ±13° respectively, the maximal error of wavelength is 10 nm, and the maximal error of incident direction is 1°.