Large scale metrology apparatus and method
First Claim
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1. A system, comprising:
- at least one photo-detecting target configured to be positioned at a first location within a predetermined volume;
a plurality of photo-emitting heads configured to each be positioned at second locations within the predetermined volume, each of the photo-emitting heads configured to generate a rotating fan beam pair;
a master signal generator that generates a reference RF signal that is broadcast to the at least one photo-detecting target; and
a signal processor configured to determine the position of the at least one photo-detecting target within the volume from signals generated by the at least one photo-detecting target in response to the plurality of rotating fan beam pairs.
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Abstract
A metrology system that uses a plurality of photo-detecting targets positioned on the objects to be assembled, a plurality of rotating photo-emitting heads, a master signal generator that generates a reference RF signal, and a signal processor that determines the position of each of the targets from signals generated by each target in response to the photo-emitting heads. During operation, the reference RF signal is broadcast to the rotating photo-emitting heads and the photo-detecting targets. The RF signal is used to determine the azimuth of the heads relative to a zero reference position to a high degree of accuracy.
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Citations
31 Claims
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1. A system, comprising:
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at least one photo-detecting target configured to be positioned at a first location within a predetermined volume; a plurality of photo-emitting heads configured to each be positioned at second locations within the predetermined volume, each of the photo-emitting heads configured to generate a rotating fan beam pair; a master signal generator that generates a reference RF signal that is broadcast to the at least one photo-detecting target; and a signal processor configured to determine the position of the at least one photo-detecting target within the volume from signals generated by the at least one photo-detecting target in response to the plurality of rotating fan beam pairs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification