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采用高精度卫星导航速度、位置信息以及星敏感器提供的姿态信息设计十表冗余捷联惯组的标定模型,包含陀螺和加速度计的零次项和标度因数,对卫星和星敏感器辅助的冗余激光陀螺捷联惯组进行实时在轨标定。利用标准Kalman滤波和Sage-Husa自适应滤波作为估计算法,对十表冗余捷联惯组参数进行在线估计。数值仿真结果表明:参数标定精度均在7%以内,是一种实时的在轨标定方法,满足误差补偿要求。冗余惯组在轨标定方法为航天器高精度定姿和定轨提供了一种理论参考。
Using high-precision satellite navigation speed, position information and attitude information provided by the star sensor, a calibration model of the redundant SINS for ten tables is designed, including the zero-order term and scale factor of the gyroscope and accelerometer, and satellite and satellite sensors Auxiliary redundant laser gyro SINS for real-time on-orbit calibration. Using standard Kalman filtering and Sage-Husa adaptive filtering as an estimation algorithm, ten table redundant SINS parameters are estimated online. Numerical simulation results show that the accuracy of parameter calibration is less than 7%, which is a real-time on-orbit calibration method to meet the error compensation requirements. The method of on-orbit calibration of redundant IHS provides a theoretical reference for high-precision attitude determination and orbit determination of spacecraft.