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针对目前散射激光告警中只能定位到散射激光光斑,而不能追溯到敌方来袭激光源的现状,构建了战场环境下包括敌方威胁激光源、照射于某平台上的散射激光光斑以及全向激光告警系统在内的空间三维几何模型,推导了平台上散射激光光斑轮廓解析表达式,以及轮廓上任意一点相对鱼眼镜头的物方半视场角表达式。将成像于探测器上的光斑进行鱼眼成像畸变校正并取光斑边缘点,计算得到三维几何模型诸参数。再将模型参数与传感器阵列信息相结合,可最终获取敌方威胁激光源相对系统的方位和距离信息。最后对以上方法进行了实验验证并对产生误差的原因进行了分析。
In view of the fact that only the laser spot can be located in the scattered laser warning and can not be traced back to the laser source coming from the enemy, the paper builds the battlefield environment including the threat laser source, the scattered laser spot irradiated on a platform, To the 3D geometric model of the laser warning system, the analytic expression of the scattered laser spot profile on the platform and the half square field of view of the fisheye lens at any point of the contour are deduced. The imaging spot on the detector is corrected for fisheye image distortion and the edge points of the spot are calculated to obtain the parameters of the three-dimensional geometric model. Combining the model parameters with the sensor array information, we can finally obtain the relative position and distance information of the enemy threat laser source. Finally, the above method is experimentally verified and the reasons for the error are analyzed.