Method and system for operating an air gauge at programmable or constant standoff
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United States of America Patent
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Sep 21, 2010
Grant Date -
Jan 1, 2009
app pub date -
Sep 12, 2008
filing date -
Dec 15, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
Provided are a methods and systems for determining a topography of an object. In an embodiment, a system includes a reference probe configured to measure a surface of a reference surface and to generate a reference signal, a measuring probe configured to measure a surface of an object and to generate a measurement signal, a sensor configured to sense a position of the measuring probe and to generate a sensor signal, and a combiner configured to receive the sensor signal and the measurement signal and to generate a combination signal therefrom. A desired distance between the measuring probe and the object is substantially maintained by adjusting the position of the measuring probe based on the measurement signal. A topography of the object is determined based at least on a comparison of the reference signal and the combination signal.
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