天基遥感中航天器挠性对成像区域的影响  

Influence of spacecraft flexibility on imaging area in space remote sensing

作　　者：邹纫秋 张加友 宋祥帅 谢亚恩 吴限德[2] ZOU Renqiu;ZHANG Jiayou;SONG Xiangshuai;XIE Yaen;WU Xiande(Beijing Institute of Space Long March Vehicle,Beijing 100076;College of Aerospace and Civil Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]北京航天长征飞行器研究所,北京100076 [2]哈尔滨工程大学航天与建筑工程学院,黑龙江哈尔滨150001

出　　处：《智能系统学报》2023年第3期489-495,共7页CAAI Transactions on Intelligent Systems

基　　金：国家自然科学基金面上项目(11772185).

摘　　要：针对遥感敏捷卫星机动模式对地成像观测,分析挠性附件振动对卫星成像区域和质量的影响。首先利用有限元法和拉格朗日法建立带挠性附卫星的动力学模型;然后通过星地几何法计算成像条带;最后分别选取太阳同步轨道和地球同步轨道,以两个对称的太阳能帆板作为挠性附件,给出数值仿真结果。仿真结果表明,卫星机动完成后,成像区域横滚方向与俯仰方向均偏差较大,导致成像区域错位;太阳帆板振动对成像区域的影响随着其振动减弱而减弱,并逐渐趋于稳定。卫星轨道高度越高,扰动对于卫星成像区域的影响越大,需要更长时间稳定自身姿态。Aiming at the earth imaging observation of remote sensing agile satellite maneuvering mode,the influence of flexible accessory vibration on satellite imaging area and quality is analyzed in this paper.Firstly,the dynamics model of satellite with flexible appendage is established by using finite element method and Lagrange method;Then,the imaging strip is calculated by satellite earth geometry method;Finally,the numerical simulation results are derived by selecting the sun-synchronous orbit and geostationary orbit as examples,and using two symmetrical solar panels as flexible accessories.The simulation results show that after the satellite maneuver is completed,the deviation between the roll direction and the pitch direction of the imaging area is large,resulting in dislocation of the imaging area;The influence of solar panel vibration on the imaging area decreases with the weakening of its vibration,and tends to stability gradually.The higher the altitude of satellite orbit,the greater the impact of disturbance on the satellite imaging area,which takes longer time to stabilize the attitude.

关 键 词：遥感卫星 成像观测 挠性附件 有限元法 拉格朗日法 敏捷卫星 成像区域 星地几何 

分 类 号：TP73[自动化与计算机技术—检测技术与自动化装置]