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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 2 — Jan. 18, 2010
  • pp: 544–550

Errors analysis on temperature and emissivity determination from hyperspectral thermal infrared data

Xiaoying OuYang, Ning Wang, Hua Wu, and Zhao-Liang Li  »View Author Affiliations


Optics Express, Vol. 18, Issue 2, pp. 544-550 (2010)
http://dx.doi.org/10.1364/OE.18.000544


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Abstract

Sensitivity analysis of temperature-emissivity separation method commonly applied to hyperspectral data to various sources of errors is performed in this paper. In terms of resulting errors in the process of retrieving surface temperature, results show that: (1) Satisfactory results can be obtained for heterogeneous land surfaces and retrieval error of surface temperature is small enough to be neglected for all atmospheric conditions. (2) Separation of atmospheric downwelling radiance from at-ground radiance is not very sensitive to the uncertainty of column water vapor (WV) in the atmosphere. The errors in land surface temperature retrievals from at-ground radiance with the DRRI method due to the uncertainty in atmospheric downwelling radiance vary from −0.2 to 0.6K if the uncertainty of WV is within 50% of the actual WV; (3) Impact of the errors generated by the poor atmospheric corrections is significant, implying that a well-done atmospheric correction is indeed required to obtain accurate at-ground radiance from at-satellite radiance for successful separation of land-surface temperature and emissivity.

© 2010 OSA

OCIS Codes
(100.3190) Image processing : Inverse problems
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(120.5630) Instrumentation, measurement, and metrology : Radiometry
(280.4991) Remote sensing and sensors : Passive remote sensing
(280.6780) Remote sensing and sensors : Temperature

ToC Category:
Remote Sensing and Sensors

History
Original Manuscript: October 19, 2009
Revised Manuscript: December 3, 2009
Manuscript Accepted: December 15, 2009
Published: January 4, 2010

Citation
Xiaoying OuYang, Ning Wang, Hua Wu, and Zhao-Liang Li, "Errors analysis on temperature and emissivity determination from hyperspectral thermal infrared data," Opt. Express 18, 544-550 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-2-544


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References

  1. C. C. Borel, “Surface emissivity and temperature retrieval for a hyperspectral sensor,” in Proceedings of IEEE International Geoscience and Remote Sensing Symposium (Seattle, 1998), 1, pp. 546–549.
  2. X. Wang, X.Y. OuYang, B.H.Tang, R.H. Zhang and Z.-L. Li, “A new method for temperature/emissivity separation from hyperspectral thermal infrared data,” in Proceedings of IEEE International Geoscience and Remote Sensing Symposium (Boston, Massachusetts, 2008), III, pp. 286–289, 2008.
  3. The Newton-Raphson Method, http://www.math.ubc.ca/~clarkson/newtonmethod.pdf .
  4. http://ara.lmd.polytechnique.fr/
  5. http://speclib.jpl.nasa.gov/
  6. http://ara.lmd.polytechnique.fr/htdocs-public/products/TIGR/TIGR.html
  7. F. Becker and Z.-L. Li, “Surface temperature and emissivity at various scales: definition, measurement and related problems,” Remote Sens. Rev. 12, 225–253 (1995).
  8. A. R. Gillespie, Department of Earth and Space Sciences, UW-ESS, Mailstop 351310, University of Washington, Seattle, W.A., 98195–1310 (personal communication, 1995)

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