摘要
研究了光纤陀螺和星敏感器的数学建模和定姿算法。在保证空间飞行器姿态确定高精度的前提下,通过扩展Kalman滤波器,将陀螺仪和星敏感器所测得的飞行器姿态参数进行数据融合和估计,并对陀螺仪进行实时补偿,姿态角估计误差幅度在以内,稳态时姿态角估计误差小于,验证了算法的正确性和有效性。结果表明,采用光纤陀螺-星敏感器联合定姿方式可以准确预测空间飞行器的姿态信息,对工程应用具有一定的指导价值。
The process of mathematical model by FOG and star-sensor is studied in this paper,on the premise of guarantee high precision of space vehicle attitude to determine,through extended kalman filter will gyros and star sensor vehicle state parameters measured by data fusion and estimation,and real-time compensation for gyro.Attitude angle estimation error range within 20 ',steady attitude angle estimation error is less than 10',verify the correctness and validity of the algorithm.The results show that the FOG/star-sensor combination of informant method can predict the state information space vehicle,has a certain instruction value for engineering applications.
出处
《飞机设计》
2015年第4期56-60,共5页
Aircraft Design
