Managed traverse system and method to acquire accurate survey data in absence of precise GPS data
US7541974B2 · kind B2 · utility
64Cited by
10References
25Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 15, 2005 |
| Grant date | Jun 2, 2009 |
| Priority date | — |
| Expiry date | Dec 8, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/49
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.