Surveying pole
AssigneeFundaciò Centre Tecnologic De Telecommunicacions De Catalunya (Cttc)
InventorsM. Eulàlia Parés Calaf, David Calero Scanlan, Enric Fernández Murcia
Life of this patent
Estimating the term…
Abstract
Current GNSS-inclinable surveying pole systems rely on magnetometer sensors. The use of these types of sensor implies performance degradation when operating near magnetic fields. The invention provides a new approach to ranging pole systems, able to provide requested performance even when working near magnetic fields.
Claims15
A positioning pole for ground point position determination comprising a rod with a bottom end for placing on the ground point to be determined and position determination means on its top end, the position determination means comprising:
- satellite positioning means for acquiring the geodetic coordinates of a top end reference point at a certain pole inclination;
- inertial sensing means for acquiring inertial data of the top end reference point corresponding to the pole inclination;
- and
- processing means for determining the coordinates of the ground point as a function of the length of the rod, and the acquired geodetic coordinates and inertial data corresponding to at least three different rod inclinations, wherein a plurality of ground point candidates emerge corresponding to each rod inclination and the final ground point position corresponds to the candidate which is common to the at least three different pole inclinations.
A method of ground point position determination by a positioning pole, the positioning pole comprising a rod with a bottom end for placing on the ground point to be determined and positioning determining means on its top end, the method comprising an initialization phase comprising:
- acquiring, for at least three different rod inclinations, the geodetic coordinates and inertial data of a top end reference point;
- and
- determining the coordinates of the ground point as a function of the length of the rod, and the acquired geodetic coordinates and inertial data corresponding to at least three different rod inclinations, wherein a plurality of ground point candidates emerge corresponding to each rod inclination and the final ground point position corresponds to the candidate which is common to the at least three different pole inclinations.
A computer program comprising instructions, once executed on a processor, for performing a method of ground point position determination by a positioning pole, the positioning pole comprising a rod with a bottom end for placing on the ground point to be determined and positioning determining means on its top end, the method comprising an initialization phase comprising:
- acquiring, for at least three different rod inclinations, the geodetic coordinates and inertial data of a top end reference point;
- and
- determining the coordinates of the ground point as a function of the length of the rod, and the acquired geodetic coordinates and inertial data corresponding to at least three different rod inclinations, wherein a plurality of ground point candidates emerge corresponding to each rod inclination and the final ground point position corresponds to the candidate which is common to the at least three different pole inclinations.
A non-transitory computer readable medium comprising instructions, once executed on a processor, for performing a method of ground point position determination by a positioning pole, the positioning pole comprising a rod with a bottom end for placing on the ground point to be determined and positioning determining means on its top end, the method comprising an initialization phase comprising:
- acquiring, for at least three different rod inclinations, the geodetic coordinates and inertial data of a top end reference point;
- and
- determining the coordinates of the ground point as a function of the length of the rod, and the acquired geodetic coordinates and inertial data corresponding to at least three different rod inclinations, wherein a plurality of ground point candidates emerge corresponding to each rod inclination and the final ground point position corresponds to the candidate which is common to the at least three different pole inclinations.
Dependencies are inferred from the claim text.