基于QD与MEMS振镜的微纳激光通信终端伺服技术研究  

Research on Servo Technology of Micro Nano Laser Communication Terminal Based on QD and MEMS Micromirror

作　　者：陈韵 于笑楠 江伦[1] 张家齐 佟首峰[1] CHEN Yun;YU Xiaonan;JIANG Lun;ZHANG Jiaqi;TONG Shoufeng(School of Opto-Electronic Engineering,Changchun University of Science and Technology,Changchun 130022)

机构地区：[1]长春理工大学光电工程学院,长春130022

出　　处：《长春理工大学学报（自然科学版）》2022年第1期39-44,共6页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：吉林省科技发展计划项目(20200201010JC)。

摘　　要：为了满足微纳卫星平台间的数传需求,实现伺服结构的小型化,设计了一套基于四象限探测器(QD)与MEMS振镜为伺服架构的微纳激光通信终端,完成光斑的检测跟踪。为了提高微纳通信终端跟踪精度,分析了光斑大小对四象限探测器检测精度的影响,使用Matlab进行仿真,并据此设计了一种当光斑直径小于四分之一探测器靶面直径时的捕获跟踪伺服系统算法,对系统组成及捕获跟踪算法进行了详细论述。搭建室内实验平台,进行了双向全光捕获跟踪实验,系统捕获时间2.2 s,跟踪误差84μrad。In order to meet the demand of data transmission between micro nano satellite platforms and realize the miniaturization design of servo structure,a micro nano laser communication terminal based on four-quadrant detector(QD)and MEMS Micromirror is designed to complete the light spot detection and tracking.In order to improve the tracking accuracy of micro nano communication terminal,the influence of spot size on the detection accuracy of four-quadrant detector is analyzed by Matlab simulation.Based on this,an algorithm of acquisition and tracking servo system is designed.When the spot diameter is less than a quarter of the detector target diameter,the composition of the system and the algorithm of tracking are discussed in detail.Building an indoor experimental platform,the bidirectional all-optical tracking experiment is carried out;the acquisition time is 2.2 s and the tracking error is 84μrad.

关 键 词：空间激光通信 四象限探测器 捕跟算法 跟踪精度 小型化 

分 类 号：TN929.13[电子电信—通信与信息系统]