POSITION MEASUREMENT METHOD FOR MOVING BODY, POSITION MEASUREMENT DEVICE FOR MOVING BODY AND GUIDE FOR AUTOMATIC GUIDED MOVING BODY

摘要

PROBLEM TO BE SOLVED: To provide position measurement with higher precision when drift occurs. ;SOLUTION: Differences d1, d2 between a first current position specific information (current position information) GGA for a moving body 2 calculated based on the absolute position measurement operation made by using a satellite position measurement system, and a second present position specific information (data for the current moving speed and the current moving direction) VTG for the moving body 2 calculated from the Doppler effect measurement result of position measurement waves used in the satellite position measurement system are drawn so that the first current position specific information (current position information) GGA is selected when the differences d1, d2 are within a tolerance and the second current position specific information (data for the current moving speed and the current moving direction) VTG is selected when the differences d1, d2 are not within the tolerance.;COPYRIGHT: (C)1999,JPO