METHOD AND EQUIPMENT FOR SETTING INITIAL COORDINATE VALUES OF INERTIA DETECTING MEANS OF MOVING BODY

摘要

PURPOSE: To set initial coordinate values of navigation of an inertia detecting means of a moving body by a method wherein motion of shaking, rotation or the like is given to a moving body from a moving parent body, the motion is detected by the inertia detecting means of the moving body and the moving parent body and a detected value of the moving body is corrected with the detected value of the moving parent body used as a reference. ;CONSTITUTION: Acceleration is given to an inertial navigation system (MINS) 18 of a missile by shaking or rotating a missile launcher 10 intentionally, and this acceleration is detected by an accelerometer which the MINS 18 has. An inertial navigation system (SINS) 12 is installed in the vicinity of the center of shaking or rotation of the launcher and it can measure the acceleration of the launcher precisely. Based on a detected value of the SINS 12, accordingly, an acceleration vector at the time of roll to be detected at the position of the MINS 18 can be obtained by computation precisely from the relative positional relationship between the SINS 12 and the MINS 18. Three orthogonal coordinate axes of acceleration vectors of the SINS 12 and the MINS 18 thus obtained are compared and a difference value of each coordinate axis is set correctively in the MINS 18 as a corrective value for the MINS 18 and stored therein as an initial coordinate value. Using as references the coordinate values thus obtained, the missile 16 can fly to a target point correctly from a warship 10.;COPYRIGHT: (C)1994,JPO&Japio