An approach of misalignment self-inspect for missile's inertial platform

This After the alignment of the missile's inertial platform system, the inertial platform will be maintained in the inertial frame, this make the inspect of the platform misalignment hard to be achieved by using conventional algorithm. In this paper, an approach of misalignment self-inspect for missile's inertial platform is described. By using the in-motion alignment technique of strap-down inertial navigation system, the attitude of the inertial platform to local level frame can be described real-time by a direction cosine matrix. Then the direction cosine matrix at the time when the alignment has been done can be calculated to inspect the inertial platform misalignment. Simulation results show that the inertial platform misalignment can be inspected precisely by using the proposed approach.