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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 10, Iss. 1 — Jan. 1, 1971
  • pp: 24–27

Hadamard-Transform Exhaust-Analysis Spectrometer

J. A. Decker, Jr.  »View Author Affiliations


Applied Optics, Vol. 10, Issue 1, pp. 24-27 (1971)
http://dx.doi.org/10.1364/AO.10.000024


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Abstract

We propose a novel instrument for automobile exhaust analysis based on a Hadamard-transform spectrometer, which would be able to make accurate measurements of the concentration of several pollutants simultaneously, would be operated by unskilled personnel, and would complete a measurement scan in less than 1 sec.

© 1971 Optical Society of America

History
Original Manuscript: May 1, 1970
Published: January 1, 1971

Citation
J. A. Decker, "Hadamard-Transform Exhaust-Analysis Spectrometer," Appl. Opt. 10, 24-27 (1971)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-10-1-24


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References

  1. F. Kneubuhl, Appl. Opt. 8, 505 (1969). [CrossRef] [PubMed]
  2. See, e.g., the ir spectrometer developed by G. C. Pimental for the 1969 Mars Mariner missions as described by C. E. Kohlhase et al., Astronaut. Aeronaut. 7, no. 7, 91 (July1969).
  3. L. Mertz, Transformation in Optics (Wiley, New York, 1965), especially Chaps. 1 & 2, pp. 1–79.
  4. A. R. Barringer, J. Opt. Soc. Amer. 60, SM-27 (1970).
  5. See, e.g., R. Briskman, J. M. Weinberg, Aerospace Medical Research Laboratories ReportAMRL-TR-66-236 (Aerospace Medical Research Laboratories, Aerospace Medical Division, U. S. Air Force Systems Command, Wright-Patterson Air Force Base, Ohio, February1967).
  6. J. A. Decker, M. O. Harwit, Appl. Opt. 7, 2205 (1968); Appl. Opt. 8, 2552 (1969); (to be published)(1971). [CrossRef] [PubMed]
  7. J. A. Decker, M. Harwit, U.S. Patent pending.
  8. For the individual spectra, see R. H. Pierson, A. N. Fletcher, E. St. C. Gantz, Anal. Chem. 28, 1218–1239 (1958); data for CO2, n-butane (typical of n-hexane) and CO are on p. 1224, for NO and NO2 on p. 1234, for SO2 on p. 1237, and for formaldehyde on p. 1229. [CrossRef]
  9. J. A. Decker, Appl. Opt. 9, 1392 (1970). [CrossRef] [PubMed]
  10. P. Fellgett, J. Phys. 28, Suppl. 3–4, C2-165 (1967).

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