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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500~1 100 nm,方位角为±13°,波长最大偏差10 nm,方位角最大误差1°。
The laser warning system is a photoelectric countermeasure device that can detect the incoming laser performance parameters in real time. Based on the grating diffraction effect and DSP signal acquisition and processing system, a laser warning system is designed and implemented to detect and alert the laser wavelength and azimuth. The hardware and software design and implementation of the laser warning system are studied. The mathematical model of incident laser wavelength and azimuth is established. The mathematical expressions of laser wavelength, azimuth angle and laser diffraction point are deduced. The laser warning system Experimental Study. The experimental results show that the system can effectively detect incoming laser wavelength and its azimuth. The measurable wavelength ranges from 500 to 1 100 nm, the azimuth angle is ± 13 °, the maximum wavelength deviation is 10 nm and the maximum azimuth error is 1 °.