SURVEYING DEVICE FOR GPS AND SURVEYING METHOD USING GPS

摘要

PROBLEM TO BE SOLVED: To enable GPS surveys even when there is a high obstruction around a survey point by calculating the coordinates of an antenna mount, which is connected to the hoisting and lowering part of a vehicle for high lift work, using GPS radio waves, and specifying the coordinates of the survey point from the coordinates of a reference point vertically below the calculated coordinates of the antenna mount. ;SOLUTION: An antenna mount 2 is mounted on the tip of the boom 4 of a vehicle for high lift work 3, and the boom 4 is extended up to a height where surrounding woods 13 may not obstruct the reception of radio waves from GPS satellites 10. Then a rotating prism 6 placed at a reference point is removed, and the mount 2 is positioned at a location directly above the reference point. Next, the coordinates of the mount 2 is calculated through the use of GPS radio waves received by a GPS antenna 9 and a GPS controller 12, and the vertical distance between the mount 2 and the reference point is found by a light wave range finder. Next, the rotating prism 6 is mounted to the location of the reference point to find the coordinates of the reference point by deducting the vertical distance from the vertical coordinate components of the mount 2, and through the use of the found coordinates, the coordinates of a survey point 11 is measured.;COPYRIGHT: (C)1998,JPO