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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 6 — Mar. 14, 2011
  • pp: 5451–5463

Responsivity-based criterion for accurate calibration of FTIR emission spectra: theoretical development and bandwidth estimation

Penny M. Rowe, Steven P. Neshyba, and Von P. Walden  »View Author Affiliations


Optics Express, Vol. 19, Issue 6, pp. 5451-5463 (2011)
http://dx.doi.org/10.1364/OE.19.005451


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Abstract

An analytical expression for the variance of the radiance measured by Fourier-transform infrared (FTIR) emission spectrometers exists only in the limit of low noise. Outside this limit, the variance needs to be calculated numerically. In addition, a criterion for low noise is needed to identify properly calibrated radiances and optimize the instrument bandwidth. In this work, the variance and the magnitude of a noise-dependent spectral bias are calculated as a function of the system responsivity (r) and the noise level in its estimate (σ r ). The criterion σ r /r <0.3, applied to downwelling and upwelling FTIR emission spectra, shows that the instrument bandwidth is specified properly for one instrument but needs to be restricted for another.

© 2011 OSA

OCIS Codes
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5630) Instrumentation, measurement, and metrology : Radiometry
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(280.4991) Remote sensing and sensors : Passive remote sensing

ToC Category:
Optical Devices

History
Original Manuscript: November 17, 2010
Revised Manuscript: February 15, 2011
Manuscript Accepted: February 18, 2011
Published: March 8, 2011

Citation
Penny M. Rowe, Steven P. Neshyba, and Von P. Walden, "Responsivity-based criterion for accurate calibration of FTIR emission spectra: theoretical development and bandwidth estimation," Opt. Express 19, 5451-5463 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-6-5451


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References

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