利用平面几何与立体几何基础理论和光的折射基本定律, 理论计算了光学球罩内任意点光源以任意方向经过球罩后输出激光轴向偏差角度。结合光学球罩内光电探测接收系统与激光发射系统的波段不同, 分析了激光发射与目标探测之间的误差, 模拟计算了发射激光与目标探测误差的变化规律。计算结果表明, 当发射激光波段与探测目标辐射波段不一致时, 需要考虑两者之间经过球罩的视轴误差, 在光电系统中进行必要的误差补偿, 实现精准探测与目标跟踪。

Based on the plane geometry and stereo geometry theory and the light refraction law, the output laser axial deviation angle of any point light source is calculated in theory after passing through the spherical shell. Considering the electro-optical detection receiving and the firing systems with different wavelength, the error between the laser firing and the target detection is analyzed and the error change law is simulated and calculated. Calculation results show that the optical axis error must be considered when the wavelength is different between the firing and the detection systems. At the same time, the optical axis error should be compensated in the electro-optical system to achieve accurate detection and target tracking.