Abstract:

Flexure deformation is a main factor which affects the accuracy of transfer alignment. Some uncertain factors such as undetermined maneuvers of the carrier can cause transfer alignment filtering model statistical characteristics uncertainty as well as deformation model parameter error, however, present filtering methods have many limitations on solving this problem. According to the above questions, a new alignment method using multiple-model Kalman filtering technique is proposed. Velocity plus attitude matching transfer alignment is applied as the validation verification of this method. Simulation results show that comparing with the alignment based on single model, the proposed alignment method has higher accuracy and adaptability of disturbance environment, so it has validity in solving the problem of transfer alignment with uncertain flexure deformation disturbance.