回波瞄准系统中基于爬山法的光束闭环瞄准实验  

Experiment of Closed-Loop Pointing Errors Compensated by Hill-Climbing Method in Laser Pointing System Using Return Photons

作　　者：周磊[1,2,3] 任戈[1,2] 谭毅[1,2] 唐涛[1,2] 于伟[1,2,3,4] 

机构地区：[1]中国科学院光电技术研究所,四川成都610209 [2]中国科学院光束控制重点实验室,四川成都610209 [3]中国科学院大学,北京100049 [4]徐州空军学院,江苏徐州221000

出　　处：《光学学报》2012年第12期14-21,共8页Acta Optica Sinica

基　　金：国家863计划资助课题

摘　　要：瞄准偏差和光束抖动,会导致光束到达靶面能量的损失,是光束瞄准系统中两个最主要的误差。分析了以高斯光束和高斯抖动为基础的光束在照明目标时产生的光回波信号的特性;在此基础上,搭建了实验室平台,实现了基于二维爬山法的光束闭环瞄准,讨论了光束抖动对光束瞄准实时性的影响,分析了不同抖动强度下光束瞄准的精度。实验结果表明:爬山算法无需已知目标和光束分布的任何信息,即可实现光束回波闭环瞄准,且性能优良;但随着光束抖动的增加,其瞄准所需回波信号样本增大,瞄准精度降低。Energy losses on target caused by boresight and jitter are two fundamental pointing errors for a laser pointing system. The characteristics of return photons reflected from an intended target in a laser pointing system are studied and a laboratory device is set up. With the hill-climbing method, a closed-loop laser pointing is realized. Furthermore, the accuracy of this technology is analyzed with different jitters, and effect of jitter on real-time pointing is discussed. The experimental results demonstrate that, the performance of hill-climbing method is still excellent. Moreover, with the increasing of jitter, the sample size of return photons increases, and the pointing precision decreases.

关 键 词：大气光学 光束瞄准系统 爬山法 回波信号 瞄准偏差 光束抖动 

分 类 号：TN012[电子电信—物理电子学]