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为校准激光陀螺捷联惯组标定系数误差,介绍了基于捷联惯组开环姿态和速度更新的解析算法。捷联开环更新的姿态误差和速度误差中包含一定的标定系数误差信息,通过转动试验和静止试验可以对标定结果进行评估。通过对开环导航系统误差方程的分析,可以得到刻度系数误差、安装误差的解析解。利用误差解析解可以实现对标定系数误差的校准。在双轴位置转台上进行验证试验,由于其自由度的限制只能标定出部分误差参数。从跑车试验效果看,该方法具有可行性。
In order to calibrate the calibration coefficient error of the laser gyro strapdown inertial set, the analytical algorithm based on the open-loop attitude and speed update of the strapdown inertial set is introduced. Attitude and velocity errors of strapdown open loop update contain certain calibration coefficient error information, and the calibration results can be evaluated through rotation test and static test. By analyzing the error equation of the open loop navigation system, the analytical solution of the error of the scale factor and the installation error can be obtained. Calibration of calibration coefficients can be calibrated using error analysis. In the biaxial position turntable validation test, due to its degree of freedom limit can only be part of the error calibration parameters. From the sports car test results, this method is feasible.