MOTION ALIGNMENT METHOD OF INERTIAL NAVIGATION SYSTEM

摘要

The present invention relates to the technical field of inertial navigation system, and in particular, to a motion alignment method of an inertial navigation system. The inertial navigation system is mounted on a motion carrier, and the method comprises: the inertial navigation system measuring rotation information and linear acceleration information of the inertial navigation system; the inertial navigation system synchronously receiving reference speed and location information of the inertial navigation system in a reference coordinate system provided by an external auxiliary information source; and the inertial navigation system performing data process on the rotation information and linear acceleration information as well as the reference speed and the location information, so as to obtain an attitude of the inertial navigation system in a body coordinate system of the current moment relative to the reference coordinate system. By means of the present invention, a motion alignment problem of the inertial navigation system in speed/location assistance of the reference coordinate system is effectively solved, and rapid attitude alignment is implemented without any attitude priori initial value.