| 摘要 |
PROBLEM TO BE SOLVED: To provide a position updating method capable of updating position information having smaller error. SOLUTION: A submarine boat 10 is provided with an inertia navigation device 11, a position measuring device 12, and a display device 16. The inertia navigation device 11 has position information 6 indicating a position of the submarine boat 10 and calculates a position of the submarine boat 10 based on angular velocity when the submarine boat 10 runs in the water to generate calculation results. The position measuring device 12 measures a position of the submarine boat 10 for a first transponder by Nth time (N is a positive number above 1) to generate measurement results by the number of N. The position measuring device 12 compensates the calculation results based on the number of N of the measurement results to control the inertia navigation device 11 so that the position information 6 is updated using the compensated calculation results as the position information 6. The position measuring device 12 controls the display device 16 so as to display the position information 6 updated by the inertia navigation device 11. COPYRIGHT: (C)2003,JPO |
