Title :
The attitude tracking maneuvers of spaceborne spotlight SAR
Author :
Xu, Liqiang ; Chen, Junli ; Chen, Guozhong ; Shao, Xiaowei ; Duan, Dengping
Author_Institution :
Inst. of Aerosp. Sci. & Technol., Shanghai Jiaotong Univ., Shanghai, China
Abstract :
The spotlight mode of spaceborne SAR platforms often have to point its payload to immobile target on the ground which means the satellite attitude have to follow a specific trajectory in a fixed time span. In this paper, the attitude angle, angular velocities and angular accelerate are derived. A PD control law with feedforward is developed to achieve the purpose. The approach is verified using numerical simulation with external disturbance and uncertain model.
Keywords :
PD control; angular velocity control; attitude control; feedforward; numerical analysis; position control; radar tracking; spaceborne radar; synthetic aperture radar; PD control law; angular accelerate; angular velocity; attitude angle; attitude tracking maneuver; external disturbance; feedforward; immobile target; numerical simulation; satellite attitude; spaceborne spotlight SAR; spotlight mode; uncertain model; Angular velocity; Attitude control; Quaternions; Radar tracking; Satellites; Space vehicles; Trajectory;
Conference_Titel :
Systems and Control in Aeronautics and Astronautics (ISSCAA), 2010 3rd International Symposium on
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-6043-4
Electronic_ISBN :
978-1-4244-7505-6
DOI :
10.1109/ISSCAA.2010.5632540
