Machine-vision-based acquisition,pointing,and tracking system for underwater wireless optical communications

作     者：Jiaming Lin Zihao Du Chuying Yu Wenmin Ge Weichao Lü Huan Deng Chao Zhang Xiao Chen Zejun Zhangu Jing Xu 林佳明;杜子豪;余楚盈;葛文敏;吕伟超;邓欢;张超;陈潇;张泽君;徐敬

作者机构：ptical Communications LaboratoryOcean CollegeZhejiang UniversityZhoushan 316021China Key Laboratory of Ocean Observation-Imaging Testbed of Zhejiang ProvinceOcean CollegeZhejiang UniversityZhoushan 316021China The Engineering Research Center of Oceanic Sensing Technology and Equipment Ministry of EducationZhejiang UniversityZhoushan 316021China 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2021年第19卷第5期

页      面：25-30页

核心收录：

学科分类：08[工学] 0803[工学-光学工程] 

基　　金：the National Natural Science Foundation of China(NSFC)(Nos.61971378 and 61671409) National Key Research and DevelopmentProgram of China(Nos.2016YFC1401202,2017YFC0306601,and2017YFC0306100) Strategic Priority Research Program of the ChineseAcademy of Sciences(No.XDA22030208) 

主　　题：acquisition pointing and tracking underwater wireless optical communication 

摘      要：Due to the proliferation of underwater vehicles and sensors,underwater wireless optical communication(UWOC)is a key enabler for ocean exploration with a strong reliance on short-range bandwidth-intensive communications.A stable optical link is of primary importance for UWOC.A compact,low-power,and low-cost acquisition,pointing,and tracking(APT)system is proposed and experimentally demonstrated to realign the optical link within 0.04 s,even when the UWOC transmitter and receiver are in relative *** system successfully achieves rapid auto-alignment through a 4 m tap water channel with a relatively large number of ***,the required minimum illumination value is measured to be as low as7.1 lx,implying that the proposed APT scheme is robust to dim underwater ***,mobility experiments are performed to verify the performance of the APT *** proposed system can rapidly and automatically align moving targets in complex and unstable underwater environments,which can potentially boost the practical applications of UWOC.