| 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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| 引用本文： | 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(4). |
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| 作者姓名： | 张宇 李新阳 饶长辉 |
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| 作者单位： | 中国科学院光电技术研究所自适应光学研究室;中国科学院自适应光学重点实验室;中国科学院研究生院; |
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| 基金项目： | 国家自然科学基金(60978050); 四川省青年基金(09ZQ026-014)资助课题 |
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| 摘 要： | 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。
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| 关 键 词： | 激光瞄准系统 照明回光 瞄准误差 随机并行梯度下降算法 |
Analysis and Experiment on the Reduction of Laser Pointing Error Based on the Return Signals from the Illuminated Target |
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| Zhang Yu, Li Xinyang, Rao Changhui,Laboratory on Adaptive Optics.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(4). |
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| Authors: | Zhang Yu Li Xinyang Rao Changhui Laboratory on Adaptive Optics |
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| Affiliation: | Zhang Yu1,2,3 Li Xinyang1,2 Rao Changhui1,21Laboratory on Adaptive Optics,Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu,Sichuan 610209,China2Key Laboratory on Adaptive Optics,China3Graduate University of Chinese Academy of Sciences,Beijing 100049,China |
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| 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 illu... |
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| Keywords: | laser pointing system return signals pointing error stochastic parallel gradient descent algorithm |
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