摘要
针对磁强计或太阳敏感器仅能估计两轴姿态的问题,提出将太阳敏感器和磁强计测量信息作为观测量,通过与基于卫星轨道和姿态角速率推算的太阳指向和磁场强度比较,估计陀螺积分姿态推算误差,校正陀螺积分姿态,并基于PI滤波估计陀螺漂移。仿真试验结果表明姿态确定精度为1°左右。
Aiming at the problem that magnetometer or sun sensors can only estimate the attitude of two axes,the observed quantity is presented by using the method of taking advantage of the observation vector measured by sun sensors and magnetometer,the attitude error is gained by using sun vector which is compared with the geomagnetic field vector estimated based on the orbit and the attitude angular velocity of the satellite.The integrated attitude of the gyro is corrected by the attitude error estimated based on the sun vector and the geomagnetic field vector,and the gyro drift is estimated based on PI filter.The simulation result shows that the attitude determination precision reaches about 1°.
作者
王献忠
张肖
WANG Xianzhong;ZHANG Xiao(Shanghai Key Laboratory of Aerospace Intelligent Control Technology,Shanghai 201109,China;Shanghai Academy of Spaceflight Technology,Shanghai 201109,China;Shanghai Aerospace Control Technology Institute,Shanghai 201109,China)
出处
《航天控制》
CSCD
2024年第6期39-43,共5页
Aerospace Control
关键词
陀螺
太阳敏感器
磁强计
组合定姿
漂移估计
卫星
Gyro
Sun sensor
Magnetometer
Integrated attitude determination
Drift estimation
Satellite
作者简介
王献忠(1971-),男,博士,研究员,研究方向为飞行器GNC系统研究与设计。
