Rotation modulation inertial navigation system can realize the compensation of the errors,thus to improve the position accuracy of the navigation system.Own to the complex rotated structure,the non-orthogonal error and angle measurement error,etc.,are unavoidable,which lead to the output of the attitude will be fluctuating with the rotation,and further affect the inertial demodulation accuracy of the attitude.To introduce the inertial attitude compensation methods,four fitting methods are selected to be discussed,and the experiment is conducted to compare and analyze different algorithms with the collected data,which can provide reference for the subsequent engineering application.
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