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Nondispersive Triple-Correlation Spectrometer For Trace Gas Analysis, Samuel Peter Kozaitis, Bruce J. Bradshaw
Nondispersive Triple-Correlation Spectrometer For Trace Gas Analysis, Samuel Peter Kozaitis, Bruce J. Bradshaw
Electrical Engineering and Computer Science Faculty Publications
We showed that the output of an autocorrelation with a gas spectrum could be triple-correlated to reduce the effects of Gaussian noise. Such processing is directly applicable to a correlation spectrometer but could be applied to other designs. In spite of the added processing, triple-correlating the output of a spectrometer allowed us to generally increase the SNR by over a factor of ten. Even with as few as two measurements good results were obtained.