Attitude planning and control method and system for daily observation swing-broom maneuvering imaging

The invention provides an attitude planning and control method and system for sun observation sweep maneuvering imaging, and the method comprises the steps: calculating the sun attitude quaternion and the sun attitude angular velocity of a satellite through the measurement information of a star sensor and a gyroscope; the method comprises the following steps: calculating a swing-sweep attitude quaternion and a swing-sweep attitude angular velocity according to a swing-sweep demand of a satellite for daily observation, and further planning an attitude maneuver path; according to the attitude maneuvering path, establishing a corresponding attitude control law to obtain a control angular momentum instruction; and distributing the control angular momentum instruction to a flywheel to carry out attitude control so as to realize tracking of a swing-sweep attitude maneuver path. According to the method, a swing-sweep attitude planning algorithm is designed, the attitude error quaternion of the current sun attitude a