Method and apparatus for comparing spectra

The multiple linear least squares regression method of determining the concentration of an analyte from a spectrum of an unknown mixture containing the analyte is improved. It is known to combine spectra of individual components of the mixture to derive a model which is then applied to the unknown s...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	IVALDI, JUAN, HOULT, ROBERT, SPRAGG, RICHARD, TRACY, DAVID H
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	COLORIMETRY INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING PHYSICS RADIATION PYROMETRY TESTING
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Beschreibung
Zusammenfassung:	The multiple linear least squares regression method of determining the concentration of an analyte from a spectrum of an unknown mixture containing the analyte is improved. It is known to combine spectra of individual components of the mixture to derive a model which is then applied to the unknown spectrum. In accordance with this invention, first, and possibly higher, derivatives of the unknown spectrum are also generated and included in the derived model.