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MANAGED TRAVERSE SYSTEM AND METHOD TO ACQUIRE ACCURATE SURVEY DATA IN ABSENCE OF PRECISE GPS DATA
MANAGED TRAVERSE SYSTEM AND METHOD TO ACQUIRE ACCURATE SURVEY DATA IN ABSENCE OF PRECISE GPS DATA
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机译:缺少精确的GPS数据的受控遍历系统和方法来获取准确的调查数据
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摘要
A method and system obtains precise survey-grade position data of target points in zones where precise GPS data cannot be obtained, due to natural or man-made objects such as foliage and buildings. The system comprises a GPS receiver mounted on a survey pole, with an inertial measurement unit (IMU) and an electronic distance meter (EDM) also mounted on the pole. The system and method obtains GPS data when outside the zone and uses the IMU inside the zone to traverse to a target point, using the EDM to obtain data reduce accumulated errors which occur with the IMU.
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