Method and apparatus for improvement of spectrometer stability, and multivariate calibration transfer
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United States of America Patent
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Nov 4, 2008
Grant Date -
May 22, 2008
app pub date -
Nov 16, 2006
filing date -
Nov 16, 2006
priority date (Note) -
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Abstract
The present invention provides methods and apparatuses that can improve measurement accuracy in interferometers. The invention provides methods for determining digital compensation filters that measure a frequency response or responses to be compensated, and then determining a filter target response from the inverse of the frequency response or responses. A digital compensation filter can be determined from the filter target response using a discrete sum of cosines with a phase argument. The invention also allows other desired filter responses to be integrated into the filter target response before determining the digital compensation filter.
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