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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 47, Iss. 32 — Nov. 10, 2008
  • pp: 6112–6123

Theoretical evaluation of measurement uncertainties of two-color pyrometry applied to optical diagnostics

Tairan Fu, Xiaofang Cheng, and Zangjian Yang  »View Author Affiliations

Applied Optics, Vol. 47, Issue 32, pp. 6112-6123 (2008)

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We present a theoretical analysis of two-color pyrometry applied to optical diagnostics. A two-color pyrometer built with a single CCD is advantageous due to the simple system design. We evaluate the possibility and degree of ill-conditionness on the basis of measurement uncertainties for different measurement approaches of this two-color system. We classify measurement approaches. The corresponding ill-conditionness criterion is established. The greater the criterion value is, the worse the ill-conditioned degree of solution is. So, the optimum choice of measurement approach for the two-color system is achieved through intercomparison of the criterion values. Numerical examples are also given to illustrate this point. The theoretical analysis not only provides an effective way of evaluating different measurement approaches, but also may help us to better understand the influences that determine the choices between wavelength/waveband measurements and calibration/noncalibration modes for temperature and soot distribution.

© 2008 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(120.6780) Instrumentation, measurement, and metrology : Temperature

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: August 7, 2008
Revised Manuscript: September 26, 2008
Manuscript Accepted: September 29, 2008
Published: November 7, 2008

Tairan Fu, Xiaofang Cheng, and Zangjian Yang, "Theoretical evaluation of measurement uncertainties of two-color pyrometry applied to optical diagnostics," Appl. Opt. 47, 6112-6123 (2008)

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