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理论分析了激光瞄准系统中视轴误差与目标照明回光的关系.介绍了同时具备激光束发射与瞄准偏差校正功能的自适应光学器件——自适应光纤准直器的原理.搭建了光束经200 m水平大气传输的激光瞄准实验平台.基于二维目标和三维目标的照明回光,利用随机并行梯度下降算法分别实现了不同初始视轴误差下的瞄准闭环校正.实验结果表明,闭环后二维目标和三维目标的视轴校正残差评价参数分别小于6%和10.8%,校正精度均在理论范围内.最后,分析了算法参数对动目标瞄准的影响.
The relationship between the axial error of the aiming system and the return light of the target illumination is analyzed theoretically.The principle of adaptive optics collimator with self-adapting function of both laser beam emission and aiming deviation correction is introduced.The structure of light beam passing 200 m horizontal atmospheric transmission laser aiming experiment platform.According to two-dimensional target and three-dimensional target illumination return light, using random parallel gradient descent algorithm to achieve aiming closed-loop correction under different initial boresight error.The experimental results show that the closed-loop two-dimensional The visual axis calibration residuals of the target and the three-dimensional target are less than 6% and 10.8%, respectively, and the correction accuracy is within the theoretical range.Finally, the influence of the algorithm parameters on the aiming of the moving target is analyzed.