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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 22, Iss. 7 — Apr. 1, 1983
  • pp: 1070–1077

Effect of atmospheric attenuation on temperature measurements made using IR scanning systems

Thomas P. Sheahen  »View Author Affiliations


Applied Optics, Vol. 22, Issue 7, pp. 1070-1077 (1983)
http://dx.doi.org/10.1364/AO.22.001070


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Abstract

The atmosphere attenuates IR radiation in certain frequency bands even at distances as short as 1 m. Within the 3–5-μm range used by many IR thermographic systems, H2O and CO2 absorb a finite fraction of the source radiation. To achieve reliable quantitative IR thermography, it is necessary to correct the received signal for this attenuation. This paper develops a simple model and presents numerical calculations of the attenuation expected at a few meters distance for one typical thermographic imaging system. (The extension to other equipment could easily be done by substituting different numerical data for the detector response.) The attenuation factors due to CO2 and H2O are 6 and 8%, respectively, at a 10-m range. A wide variety of target temperature and ambient humidity conditions were examined; representative curves selected from this output are presented. Because of the importance of precise IR measurements for industrial applications, the effect of varying CO2 concentrations was also studied.

© 1983 Optical Society of America

History
Original Manuscript: November 16, 1982
Published: April 1, 1983

Citation
Thomas P. Sheahen, "Effect of atmospheric attenuation on temperature measurements made using IR scanning systems," Appl. Opt. 22, 1070-1077 (1983)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-22-7-1070


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References

  1. Energy, suppl. to Natl. Geogr. 159, No. 2 (Feb.1981).
  2. D. M. Burch, “Use of Aerial Infrared Thermography to Compare the Thermal Resistances of Roofs,” Natl. Bur. Stand. U.S. Tech. Note 1107 (Aug.1979); available from U.S. Superintendent of Documents, Washington, D.C.
  3. C. W. Hurley, K. G. Kreider, “Application of Thermography for Energy Conservation in Industry,” Natl. Bur. Stand. U.S. Tech. Note 923 (Oct.1976).
  4. Visions in Infrared (film) (AGA Corp., Lidingo, Sweden, 1975).
  5. K. G. Kreider, T. P. Sheahen, “Use of Infrared Thermography for Industrial Heat Balance Calculations,” Natl. Bur. Stand. U.S. Tech. Note 1129 (July1980).
  6. D. E. Gray, Ed., American Institute of Physics Handbook, (McGraw-Hill, New York, 1963).
  7. W. L. Wolfe, G. J. Zissis, Eds., The Infrared Handbook, (Environmental Research Institute of Michigan, Ann Arbor, 1978).
  8. R. Stair, R. G. Johnston, J. Res. Natl. Bur. Stand. 53, 211 (1954). [CrossRef]
  9. AGA 680, manufactured by AGA Corp., Lidingo, Sweden. The reader should be aware that the National Bureau of Standards does not endorse one instrument manufacturer over another, and the choice of AGA for this study should not be construed as such.
  10. Electro-Optical Industries model SS143 with Temperature Controller model 205.
  11. AGA Thermovision 680/102B Operating Manual (AGA Corp., Lidingo, Sweden); supplemented by private communications.
  12. H. Levinstein, J. Mudar, Proc. IEEE 63, 6 (1975). [CrossRef]
  13. The chopper is a reflecting aluminum disk <3 cm from the detector. The remainder of the detector’s field of view is at 77 K. Although the chopper radiates at ambient temperatures (say 293 K) with an emittance between 0.05 and 0.1, the tail of the Planck function in the 4–5-μm wavelength range makes it act like a blackbody radiator near 240 K.
  14. R. M. Goody, Atmospheric Radiation (Oxford U.P., London, 1964).
  15. R. C. Jones, Infrared Phys. 5, 11 (1965); also F. Nicodemus, “Self-Study Manual on Optical Radiation Measurements,” Natl. Bur. Stand. U.S. Tech. Note 910-2 (Feb.1978), Chap. 4. [CrossRef]
  16. F. X. Kneizys et al., “Atmospheric Transmittance/Radiance: Computer Code lowtran 5,” AFGL-TR-80-0067, Air Force Geophysics Laboratory (1980); available from National Technical Information Service, Washington, D.C.
  17. A. J. LaRocca, R. E. Turner, “Atmospheric Transmittance and Radiance: Methods of Calculation,” Report 107600-10-T, Environmental Research Institute of Michigan. J. N. Hamilton, J. A. Rowe, D. Anding, “Atmospheric Transmission and Emission Program,” Report TOR-0073 (3050-02)-3 (Aerospace Corp., El Segundo, Calif., 1973).
  18. L. M. McMillin, H. E. Fleming, M. L. Hill, Appl. Opt. 18, 1600 (1979). [CrossRef] [PubMed]
  19. For example, see A. T. Mecherikunnel, J. C. Richmond, “Spectral Distribution of Solar Radiation,” NASA Tech. Memo. 82021 (Sept.1980). Available from U.S. Superintendent of Documents, Washington, D.C.
  20. J. H. Pierluissi, K. Tomiyama, R. B. Gomez, Appl. Opt. 18, 1607 (1979). [CrossRef] [PubMed]
  21. lowtran 5 was modified to allow the concentration of the “uniformly mixed gases” to increase in the ratio of ×/330, with × an input parameter. This minor fix was sufficient because CO2 was the only one of those gases with an absorption band within the instrument bandpass.
  22. J. Hansen et al., Science 213, 957 (1981). [CrossRef] [PubMed]
  23. J. C. Richmond, in Proc. Soc. Photo-Opt. Instrum. Eng. 226, 110 (1980).
  24. W. L. Wolfe, Proc. Soc. Photo-Opt. Instrum. Eng. 226, 133 (1980).
  25. C. E. Scarborough, T. P. Sheahen, measurements in NBS photometric range (unpublished data).

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