The invention provides a remote sensing satellite sky pointing attitude control method and a computer readable medium. The method comprises the following steps: acquiring satellite/ground camera configuration and prior information, obtaining a sun/ground shielding angle and an installation matrix of a satellite/ground camera, and acquiring a direction vector of a satellite pointing to the earth center and the sun according to current time and orbit information; calculating an expected attitude quaternion of a satellite body system relative to an inertial system when the satellite points to the sky, and realizing attitude convergence when the satellite points to the sky; according to the method, in combination with in-orbit calibration requirements and constraints, a push-broom angular velocity, a push-broom angular direction and push-broom duration are obtained, a rotating Euler axis is determined, an expected attitude quaternion and an angular velocity when a satellite performs push-broom on the sky are obtained, and the satellite performs push-broom on the sky. The method can avoid the influence of the sunlight and the stray light reflected by the earth on the simultaneous imaging of the satellite/ground camera, is more suitable for the processing of the remote sensing image after the push-broom imaging of the linear array ground camera, and meets the requirements of the in-orbit calibration of the included angle of the satellite/ground camera of the remote sensing satellite.
本发明提出了一种遥感卫星对天指向姿态控制方法及计算机可读介质。本发明获取星/地相机配置和先验信息,得到星/地相机的日/地遮蔽角和安装矩阵,根据当前时刻和轨道信息,获取卫星指向地心和太阳的方向矢量;计算卫星对天指向时卫星本体系相对惯性系的期望姿态四元数,并实现卫星对天指向时姿态收敛;结合在轨标定要求及约束,获取推扫角速度、推扫角方向以及推扫时长,并确定旋转欧拉轴,获得卫星对天推扫时的期望姿态四元数和角速度,卫星进行对天推扫。本发明可避免太阳光及地球反射的杂散光对星/地相机同时成像的影响,更适用于线阵地相机推扫成像后遥感图像的处理,满足了遥感卫星星/地相机夹角在轨标定的需求。
Remote sensing satellite sky pointing attitude control method and computer readable medium
一种遥感卫星对天指向姿态控制方法及计算机可读介质
2023-09-01
Patent
Electronic Resource
Chinese
IPC: | B64G Raumfahrt , COSMONAUTICS |
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