Method and device for measuring the position and orientation of

Details Method and device for measuring the position and orientation of Method and device for measuring the position and orientation of

1993-06-29

1994-09-13

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Beacon or receiver

364559, G01S 504

Patent

active

053472896

ABSTRACT:
A method of measuring the position and orientation of an object is disclosed in conjunction with an apparatus to achieve this method. The method and apparatus reduce the metal effects caused by metal objects which are in close proximity to a magnetic field generator. The metal effects are reduced by utilizing a magnetic field generator which creates a rotating magnetic field vector and then measuring the time required for that magnetic field vector to travel between a known reference point and the sensor whose position is being measured. By keeping the frequency of the rotating magnetic field vector constant and measuring the time required for this magnetic field vector to travel the previously mentioned distance, an angle between a reference axis and a vector directed toward the sensor can be determined. Once appropriate angles are measured, calculations can be undergone to determine the position of the sensor. Furthermore, by utilizing a plurality of sensors the orientation of the sensors with respect to one another can be determined.

REFERENCES:
patent: 4017858 (1977-04-01), Kuipers
patent: 4287809 (1981-09-01), Egli et al.
patent: 4333154 (1982-06-01), Devaud et al.
patent: 4396885 (1983-08-01), Constant
patent: 4550984 (1985-11-01), Reymond
patent: 4768028 (1988-08-01), Blackie
patent: 4829250 (1989-05-01), Rotier
patent: 4849692 (1989-07-01), Blood

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