Method for determining and tracking the position and...

Details Method for determining and tracking the position and... Method for determining and tracking the position and...

2006-01-31

2006-01-31

Nghiem, Michael (Department: 2863)

Data processing: measuring, calibrating, or testing

Calibration or correction system

Position measurement

C702S094000, C600S424000, C324S207110

Reexamination Certificate

active

06993443

ABSTRACT:
With a method for determining and tracking a changing, true position and orientation of a magnetic field sensor within a three-dimensional magnetic field space from the values measured by the magnetic field sensor, the magnetic field space is structured in a preceding calibration mode into a three-dimensional grid with equidistant grid points. All values measured by the magnetic field sensor are then stored in a calibration table as calibration positions and calibration orientations allocated to the real positions of the grid points in the magnetic field space. A linear interpolating transformation of the measuring position in the real magnetic field space is executed for the measuring values from the magnetic field sensor by using respectively four calibration positions taken from the calibration table, which span a tetrahedron that encloses the measuring position.

REFERENCES:
patent: 6484118 (2002-11-01), Govari
patent: 6636757 (2003-10-01), Jascob et al.
Raab et al., “Magnetic Position and Orientation Tracking System”, IEEE Transaction on Aerospace and Electronic Systems, Vol., AES-15, No. 5, pp. 709-718, Sep. 1979.

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