Patent · US Expired

Method of correcting spectral data for background

US5291426A · kind A · utility

34Cited by
8References
28Claims
0Family size

Assignee

Inventors

Key dates

Filing dateFeb 27, 1991
Grant dateMar 1, 1994
Priority date—
Expiry dateFeb 27, 2011

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01R23/16
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A method of producing spectral data corrected for background includes generating spectral data, ascertaining background and subtracting background points to produce the corrected data. To ascertain background the spectral data are masked initially at the spectral peak of interest, and a least squares curve is fitted to the masked data. A runs test is performed to detect whether the number of runs exceeds a selected significance level. If so, the data are further masked and a curve is refitted. These steps are iterated until no further significant number of runs is detected. Similar testing for outliers is then effected with similar masking, a final curve represents the background level.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.