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激光发射系统通常受到瞄准误差的影响,使得发射光束的中心偏离靶目标,造成能量传输损失和系统性能下降。激光对目标照明后的散射回光信号可以反映瞄准误差的信息,通过对散射回光信号的测量可以对瞄准误差进行修正来提高激光发射系统的瞄准性能。研究了一种基于目标照明回光的瞄准误差修正方法。利用目标回光信息与瞄准误差的关系,通过随机并行梯度下降(SPGD)算法对瞄准误差进行校正,分析了影响瞄准误差校正精度的因素。实验数据验证了理论分析结果。
Laser emission systems are often affected by aiming errors that shift the center of the emitted beam off the target, resulting in loss of energy transmission and degradation of system performance. The laser-target scattering backfill signal can reflect the aiming error information, and the aiming error can be corrected by measuring the scattering back-light signal to improve the aiming performance of the laser transmitting system. Aiming error correction method based on target illumination back light is studied. Aiming at the relationship between target return light and aiming error, the aiming error is corrected by stochastic parallel gradient descent (SPGD) algorithm, and the factors affecting the accuracy of aiming error correction are analyzed. Experimental data verify the theoretical analysis.