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利用高精度陀螺对星敏感器在轨标定算法研究 被引量:7

Autonomous on-orbit calibration algorithm of star sensors with gyros
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摘要 研究了利用高精度陀螺对星敏感器误差在轨标定方法。采用高精度陀螺,利用陀螺作为星体的姿态参考可以连续提供星体的三轴姿态角速度信息,积分得到相应的姿态角特性,结合卫星姿态运动学方程,基于扩展卡尔曼滤波算法,针对星敏感器的常值误差和测量噪声,设计了星敏感器在轨标定模型,利用陀螺的测量输出对其进行实时补偿,以确保姿态测量元件在轨工作精度。仿真结果表明该在轨标定算法可以准确标定出星敏感器的常值误差。 The autonomous on-orbit calibration algorithm of star sensors with gyros is presented. Since the gyros can get sequential attitude angles that it selects the satellite's kinematics as Kalman filter state equation. The star sensor main error is misalignment. For correcting the star sensor errors effects,it's useful that calibration star sensors on-orbit to improve accuracy of the satellite attitude determination. This algorithm can improve star sensors' precision efficiently. Simulation results indicate the availability of the on-orbit calibration algorithm.
出处 《系统工程与电子技术》 EI CSCD 北大核心 2008年第1期120-123,共4页 Systems Engineering and Electronics
基金 教育部创新团队基金(IRT0520) 国家自然科学基金(60704020)资助课题
关键词 姿态确定 在轨标定 卡尔曼滤波 四元数 attitude determination on-orbit calibration Kalman filter quaternion
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