Apparatus and method for measurement and compensation of atmospheric turbulence effects in wavefront interferometry
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United States of America Patent
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Dec 2, 2008
Grant Date -
Mar 1, 2007
app pub date -
Aug 24, 2006
filing date -
Aug 26, 2005
priority date (Note) -
Expired
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Abstract
A method of operating a wavefront interferometry system that generates an array of interference signals that contains information about relative wavefronts of measurement and reference beams, the method involving: from the array of interference signals, computing a first array of phase measurements for a first time and a second array of phase measurements for a second time; computing a difference of the first and second arrays of phase measurements to determine an array of rates of phase changes; and from the array of rates of phase changes, computing an array of atmospheric turbulence effect values which is a measure of atmospheric turbulence effects in the wavefront interferometry system.
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