遥感卫星在侧视和偏航导引模式下太阳帆板光照角变化分析  

Analysis of sun illumination angle on remote sensing satellite flying in side⁃looking and yaw⁃steering mode

作　　者：白勇 姜婷婷 李瑞琴[1] 康永鹏 仲兆宇 BAI Yong;JIANG Tingting;LI Ruiqin;KANG Yongpeng;ZHONG Zhaoyu(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：《现代电子技术》2024年第7期145-149,共5页Modern Electronics Technique

摘　　要：遥感卫星通常工作在太阳同步轨道,姿态控制较为复杂。卫星可采用姿态侧视来扩大成像载荷探测范围,并通过姿态偏航导引来消除或补偿成像畸变。上面两种模式的姿态机动对太阳帆板光照角产生了较大影响,使得卫星一年当中不同时段太阳电池阵光照角差异很大,这对卫星电源系统设计有很大影响。文中通过分解卫星姿态和帆板安装位置影响因素,分析二者的影响,并利用坐标矩阵转换将光线矢量和帆板法线映射到同一坐标系下进行解算,从而得到光照角关系式。经过仿真验证该计算方法对光照角分析的有效性。Remote sensing satellites are usually deployed on sun-synchronous orbit,and the control of their attitudes is complicated.Satellite can adopt attitude side-looking to expand the detection range of imaging load,and eliminate or compensate imaging distortion by attitude yaw-steering.The attitude maneuver of the above two modes has a great influence on the sun illumination angle,which makes the illumination angle of solar array of satellites vary greatly at different times of the year,which has a great influence on the design of satellite power supply system.In this paper,the factors of the satellite attitude and solar array layout are decomposed and considered respectively,and by coordinate conversion,sunlight vector and normal of solar array are mapped to the same coordinate to solve the sun illumination angle.Simulation results show that the proposed calculation method for the analysis of sun illumination angle is feasible.

关 键 词：遥感卫星 光照角 侧视 偏航导引 成像畸变 太阳帆板光照角 

分 类 号：TN927.2-34[电子电信—通信与信息系统] V416[电子电信—信息与通信工程]