Patent · US Active

Land survey system

US7940211B2 · kind B2 · utility

11Cited by
0References
3Claims
0Family size

Assignee

Inventor

Key dates

Filing dateNov 16, 2009
Grant dateMay 10, 2011
Priority date—
Expiry dateNov 16, 2029

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 position measurement components such as a GPS receiver, together with an inertial measurement unit (IMU) and an electronic distance meter (EDM) or an image capture device all mounted on a survey pole. The system and method obtains GPS data when outside the zone and uses the other position measurement systems, such as the IMU, inside the zone to traverse to a target point. The EDM or the image capture device may be used within or without the zone to obtain data to reduce accumulated position errors.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.