Study Of Transfer Alignment Techniques On Ship Carried Weapon System

For improving the viability and quick response of the ship, the Strap-Down of Inertial Navigation System (SDINS) needs a quick and precise alignment. Considering all the modern ship being fixed high precise Master Inertial Navigation System (MINS), transfer alignment is a perfect choose for the initial alignment of the SDINS.The research of the thesis is based on the SDINS. We choose the method of perturbation to develop the popular phi-angle and psi-angle error model of the SDINS. On the basis of the error model, the study mainly deals with the transfer alignment techniques, including the velocity matching, attitude matching and velocity-plus-attitude matching approaches.The velocity matching method can achieve its alignment goal by correcting the attitude matrix of the Slave Inertial Navigation System (SINS). The attitude matrix of SINS can be achieved by oberserving the velocity difference between the MINS and SINS. The thesis founds the phi-angle error model and shows the simulation when the carrier in the different movement.The attitude matching method can achieve its alignment goal by oberserving the attitude difference between the MINS and SINS. The thesis also develops the popular phi-angle error model and shows the results of the corresponding simulation.Single matching method has its disadvantages, so the thesis especially researches a rapid and efficient method of transfer alignment, namely the velocity plus attitude matching method. The thesis discusses from the bending angle and applies the second-order Markov process to construct the model of the bending angle. On the basis of this bending model, the thesis develops the popular phi-angle error model. At the same time, the thesis also adopts the approach of directly transfer the attitude of the MINS to gain another error model. In essence,...