| 摘要 |
PURPOSE:To prevent a reduction in precision of initial setting resulted from a difference in mounting position by supplying a standard speed in the mounting position of a speed standard device in conversion to the mounting position of an INS body. CONSTITUTION:The positional vector L of the mounting point Pb of an INS body 6 to the mounting point Pa of a speed standard device 7 is preliminarily stored in a memory part 11. The relative speed U=omegaXL of the point Pb to the point Pa is calculated from the positional vector L and rotating angle speed by a relative speed arithmetic part 12, and the standard speed V'=V+U in the mounting point Pb is operated instead of the standard speed V in a correction arithmetic part 12, and this calculated value is supplied to a standard speed converting part 4. Namely, since the relative speed U of the mounting point Pb to the mounting point Pa caused by the rotation of a moving body is taken into consideration by this conversion, a reduction in precision of initial setting in an inertia arithmetic part 3 resulted from a difference in mounting position between the speed standard device 7 and the INS body 6 can be prevented. |
