Patent ID: 6700661
Filing Date: 2004-03-02
Classification: G01J

Abstract:
A method of calibrating the wavelength of a target instrument, said target instrument being provided with a calibration model developed for a primary instrument, the method comprising:(a) obtaining a reference set of at least two wavelength calibration parameters for the primary instrument; (b) obtaining a target set of at least two corresponding wavelength calibration parameters for the target instrument; (c) measuring a reference spectral response of a sample with the primary instrument; (d) measuring a target spectral response of said sample with the target instrument; (e) iteratively adjusting the target set of wavelength calibration parameters; (f) for each target set of wavelength calibration parameters, determining spectral residuals corresponding to that target set; and (g) selecting an optimum set of wavelength calibration parameters based on the spectral residuals for each target set of wavelength calibration parameters.