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目标粗糙特性对主动照明信标波前探测的影响

Influence of Surface Roughness on Wavefront Sensing Performance of Active Illumination Beacon

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摘要

建立了基于目标粗糙特性的主动照明信标数值计算模型,分析了目标粗糙特性对散射回波光强均匀性和波前均方根的影响,对比了不同目标粗糙程度下主动照明信标探测波前和点光源信标探测结果的差异,以及自适应光学系统校正效果。研究结果表明:随着目标表面粗糙程度减弱,散射回波的波前均方根变大,主动照明信标和点光源信标探测波前结果差异增大,自适应光学系统校正效果下降。此外,增多照明光路数可以抑制弱粗糙表面时上行链路湍流对主动照明信标波前探测的影响。

Abstract

A numerical simulation model of active illumination beacon considering surface roughness is established. Based on this model, the effect of roughness on intensity uniformity and wavefront mean square root of scattered light is discussed, and the difference between wavefronts detected by an active illumination beacon and a point source beacon and the correction effect of an adaptive optical system are analyzed. Moreover, as the surface roughness of a target is decreasing, the wavefront mean square root of scattered light and the difference between wavefronts detected by the active illumination beacon and point source beacon are increasing, but the correction effect of the adaptive optical system is decreasing. In addition, increasing the number of illuminator will suppress the influence of uplink turbulence on wavefront sensing.

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DOI:10.3788/CJL201946.0705002

所属栏目:光束传输与控制

基金项目:国家自然科学基金;

收稿日期:2019-01-28

修改稿日期:2019-03-07

网络出版日期:2019-07-01

作者单位    点击查看

赵旺:中国科学院自适应光学重点实验室, 四川 成都 610209中国科学院光电技术研究所, 四川 成都 610209中国科学院大学, 北京 100049
董理治:中国科学院自适应光学重点实验室, 四川 成都 610209中国科学院光电技术研究所, 四川 成都 610209
杨平:中国科学院自适应光学重点实验室, 四川 成都 610209中国科学院光电技术研究所, 四川 成都 610209
许冰:中国科学院自适应光学重点实验室, 四川 成都 610209中国科学院光电技术研究所, 四川 成都 610209
王帅:中国科学院自适应光学重点实验室, 四川 成都 610209中国科学院光电技术研究所, 四川 成都 610209

联系人作者:王帅( wangshuai@ioe.ac.cn)

备注:国家自然科学基金;

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引用该论文

Wang Zhao, Lizhi Dong, Ping Yang, Bing Xu, Shuai Wang. Influence of Surface Roughness on Wavefront Sensing Performance of Active Illumination Beacon[J]. Chinese Journal of Lasers, 2019, 46(7): 0705002

赵旺, 董理治, 杨平, 许冰, 王帅. 目标粗糙特性对主动照明信标波前探测的影响[J]. 中国激光, 2019, 46(7): 0705002

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