Online adaptive calibration method for inertial sensor errors of aerospace vehicle

The invention discloses an online adaptive calibration method for inertial sensor errors of an aerospace vehicle. The method comprises the following steps: establishing an error of an inertial sensor in the high dynamic flight process of the aerospace vehicle, wherein the errors comprise an installation error, a calibration factor error and a random constant value error; establishing a high-order online calibration filter state equation comprising error parameters of the inertial sensor and a measurement equation; and finally, performing online adaptive calibration and real-time compensation on the errors of the inertial sensor in the high dynamic flight process of the aerospace vehicle, thereby obtaining the navigation result of the inertial navigation system subjected to error compensation correction of the inertial sensor. According to the method, the real-time calibration and compensation of the installation error, the calibration factor error and the random constant value error of the inertial sensor of the inertial navigation system can be realized in the high dynamic flight process of the aerospace vehicle, the performance of the inertial navigation system in an aerospace flight environment is effectively improved, and the method is applied to engineering application.