外热流环境中星间激光快速建链影响分析研究  

Analysis and Study on the Impact of Rapid Link Establishment of Interstellar Laser in External Heat Flux Environment

作　　者：张萍 成飞[1] 关哲 贺文正 韩轶丹 ZHANG Ping;CHENG Fei;GUAN Zhe;HE Wenzheng;HAN Yidan(Shanghai Institute of Satellite Engineering,Shanghai 201109,China)

机构地区：[1]上海卫星工程研究所,上海201109

出　　处：《遥测遥控》2025年第2期20-33,共14页Journal of Telemetry,Tracking and Command

基　　金：科工局民用航天技术预先研究项目(D010105)。

摘　　要：激光通信作为卫星间数据传输的重要手段之一,其快速稳定的建链能力直接影响着星座系统的性能。激光通信终端依赖高精度光学跟瞄系统以实现信号光束持续稳定指向目标卫星。然而,空间环境因素会干扰激光终端的指向精度,其影响程度可达毫弧度量级。卫星在轨运行中因热胀冷缩和应力变化产生的星体结构形变,导致激光终端指向精度相较卫星平台基准位置发生刚体位移。本文以星间激光通信链路快速稳定建链为应用背景,采用有限元分析方法对激光终端基准与卫星平台星敏基准因热致形变产生的指向误差进行研究。通过分析不同轨道高度卫星在轨受热变形产生的安装基准误差量,获取激光通信链路指向误差变化规律,为实现快速稳定建链提供分析基础,同时为整星响应单机布局及总体热控提供设计参考。As one of the important means of data transmission between satellites,laser communication has a direct impact on the performance of the constellation system due to its fast and stable link establishment ability.The laser communication terminal relies on a high-precision optical tracking system to achieve continuous and stable pointing of the signal beam to the target satellite.However,space environmental factors can interfere with the pointing accuracy of laser terminals,and their influence can reach the level of milliarcsecond measurements.The deformation of the satellite structure caused by thermal expansion,cold contraction and stress changes during the satellite operation in orbit leads to the rigid displacement of the laser terminal pointing accuracy compared with the reference position of the satellite platform.In this paper,based on the application background of the rapid and stable chain construction of inter-satellite laser communication links,the finite element analysis method is used to study the pointing error caused by the thermally induced deformation of the laser terminal datum and the satellite platform star sensitive datum.By analyzing the installation reference error caused by the thermal deformation of satellites at different orbit altitudes,the variation law of laser communication link pointing error is obtained,which provides an analytical basis for the rapid and stable chain construction,and provides a design reference for the module layout and overall thermal control of the whole satellite.

关 键 词：激光通信 稳定建链 热变形 指向误差 有限元分析 

分 类 号：TN929.1[电子电信—通信与信息系统] TN927.2[电子电信—信息与通信工程]