Automatic correction for continuum background in laser...

Optics: measuring and testing – By dispersed light spectroscopy – With raman type light scattering

Reexamination Certificate

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C356S318000

Reexamination Certificate

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06987564

ABSTRACT:
The approximation of a spectral continuum by determining a plurality of minima in the spectral data; splitting the spectral data into a predetermined number of groups N; for each group of spectral data, determining major minima for the group, and calculating an average and a standard deviation for the determined major minima; determining a polynomial function that can be drawn through the major minima of all groups; for each group of spectral data, determining minor minima; calculating an average deviation (ΦN) between this polynomial function and the determined minor minima; reducing the number of groups, and repeating this process for the reduced number of groups until a minimum number of groups is reached. Then, the least ΦNcorresponding to an optimal number of groups Noptis determined. The spectral data is split into Noptgroups; and a polynomial function that can be drawn through both the major minima and minor minima is determined for Noptgroups. This polynomial function approximates the spectral continuum.

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