Optics: measuring and testing – Angle measuring or angular axial alignment – Apex of angle at observing or detecting station
Patent
1993-10-06
1998-09-22
Issing, Gregory C.
Optics: measuring and testing
Angle measuring or angular axial alignment
Apex of angle at observing or detecting station
342463, 345 8, 348 53, G01B 1126, G01S 302, G09G 500, H04N 947
Patent
active
058122575
ABSTRACT:
A position tracker wherein a base unit scans a selected path with electromagnetic signals. A remote unit whose position relative to the base unit is to be detected includes a sensor for detecting the signals from the base unit. When the scanning signals are detected by the remote unit, the remote unit transmits a response signal to the base unit. The base unit may calculate the angular position of the remote unit relative to the base unit by comparing the time intervals between successive response signals. By locating multiple base units in different positions, the position of the remote unit along multiple coordinate axes may be determined. By adding multiple sensors and response transmitters to the remote unit, the roll, pitch and yaw of the remote unit also may be calculated.
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Grimaud Jean-Jacques G.
Teitel Michael A.
Issing Gregory C.
Sun Microsystems Inc.
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