Study on Transfer Alignment Method for Nonlinear Filtered Inertial Navigation System

Aiming at the feature that the transfer alignment of inertial navigation system moving base is a nonlinear system in practical engineering, this paper establishes an accurate nonlinear filtering model for the transfer alignment of moving base by adopting the second-order Markov process to represent the dynamic deflection deformation in the process of transfer alignment and by applying the nonlinear filtering method to the process of transfer alignment of inertial navigation system. Finally, through the simulation comparison with the Kalman filtering method, the results show that the nonlinear filtering algorithm has obvious advantages in the alignment accuracy in the transfer alignment process of the inertial navigation system.