基于目标照明回光的瞄准误差修正方法精度分析及实验验证

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。

Abstract

Laser beam pointing systems are generally affected by pointing errors. The pointing errors cause energy loss and the decline of the system performance while the center of the laser beam is not on the target. The pointing errors can be estimated from the scatter return photons back from the illuminated target. The performance of pointing error can be improved with close-loop control on the measurement of the return signals. In this paper a method to reduce pointing error based on the return signals from the illuminated target is studied. The stochastic parallel gradient descent (SPGD) algorithm is applied in this method. Some effects to influence the precision of pointing errors are analyzed. The analysis is verified by experiment.

参考文献

[1] . Estimation of laser system pointing performance by use of statistics of return photons[J]. Appl. Opt., 2000, 39(9): 1359-1371.

[2] . Borah, David Voelz, Santasri Basu. Maximum-likelihood estimation of a laser system pointing parameters by use of return photon counts[J]. Appl. Opt., 2006, 45(11): 2504-2509.

[3] . Borah, David Voelz. Estimation of laser beam pointing parameters in the presence of atmospheric turbulence[J]. Appl. Opt., 2007, 46(23): 6010-6018.

[4] . Rao Gudimetla, Jim F. Riker. Moment-matching method for extracting beam jitter and boresight in experiments with satellites of small physical cross section[J]. Appl. Opt., 2006, 45(23): 5608-5616.

[5] Gordon Lukesh, Susan Chandler, David Voelz. Analysis of satellite laser optical cross sections from the active imaging testbed［C］. SPIE, 2002, 4538: 24～33

[6] Susan Chandler, Gordon Lukesh, Santasri Basu et al.. Model-based beam control for illumination of remote objects-part I: theory and real-time feasibility［C］. SPIE, 2004, 5552: 105～113

[7] Susan Chandler, Gordon Lukesh, Santasri Basu et al.. Model-based beam control for illumination of remote objects-part II: laboratory experiment［C］. SPIE, 2004, 5552: 114～122

[8] Susan Chandler, Gordon Lukesh. Non-imaging detection of target shape and size［C］. SPIE, 2006, 6234: 85～94

[9] 陈波, 杨慧珍, 张金宝等. 点目标成像自适应光学随机并行梯度下降算法性能指标与收敛速度［J］. 光学学报, 2009, 29(5): 1143～1148

Chen Bo, Yang Huizhen, Zhang Jinbao et al.. Performance index and convergence speed of parallel gradient descent algorithm in adaptive optics of point source［J］. Acta Optica Sinica, 2009, 29(5): 1143～1148

[10] 王三宏, 梁永辉, 龙学军等. 基于随机并行梯度下降算法的多级波前校正技术［J］. 中国激光, 2009, 36(5): 1091～1096

Wang Sanhong, Liang Yonghui, Long Xuejun et al.. Multilevel wavefront correction technique based on stochastic parallel gradient descent algorithm［J］. Chinese J. Lasers, 2009, 36(5): 1091～1096

[11] 张金宝, 陈波, 王彩霞等. 61单元自适应光学系统随机并行梯度下降算法动态实验研究［J］. 中国激光, 2010, 37(3): 668～674

Zhang Jinbao, Chen Bo, Wang Caixia et al.. Dynamical wave-front distortion correction experiment based on stochastic parallel gradient descent algorithm for 61-element adaptive optics system［J］. Chinese J. Lasers, 2010, 37(3): 668～674

[12] 杨慧珍, 李新阳, 姜文汉. 自适应光学系统随机并行梯度下降控制算法仿真与分析［J］. 光学学报, 2007, 27(8): 1355～1360

Yang Huizhen, Li Xinyang, Jiang Wenhan. Simulation and analysis of stochastic parallel gradient descent control algorithm for adaptive optics system［J］. Acta Optica Sinica, 2007, 27(8): 1355～1360

张宇, 李新阳, 饶长辉. 基于目标照明回光的瞄准误差修正方法精度分析及实验验证[J]. 中国激光, 2011, 38(4): 0402011. Zhang Yu, Li Xinyang, Rao Changhui. Analysis and Experiment on the Reduction of Laser Pointing Error Based on the Return Signals from the Illuminated Target[J]. Chinese Journal of Lasers, 2011, 38(4): 0402011.

基于目标照明回光的瞄准误差修正方法精度分析及实验验证

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