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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 29 — Oct. 10, 2007
  • pp: 7091–7098

Improved ray tracing air mass numbers model

Sergey N. Kivalov  »View Author Affiliations


Applied Optics, Vol. 46, Issue 29, pp. 7091-7098 (2007)
http://dx.doi.org/10.1364/AO.46.007091


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Abstract

An improved ray tracing air mass model to calculate the air mass numbers for the entire zenith angle range is developed. The improved model uses the approach when the trajectory element of light in the atmosphere is approximated by an arc of a circle. This way the angles at the beginning and at the end of the trajectory element can be counted simultaneously. This approach gives the second-order approximation for the real light trajectory with more accurate results than the results of the approaches of Link and Neuzil (Tables of Light Trajectories in the Terrestrial Atmosphere, Hermann, 1969) and the Kasten and Young models [Appl. Opt. 28, 4735 (1989)]. The developed model allows us to avoid the calculation problems of the Link and Neuzil and Kasten models when the zenith angle is close to or equal to 90°. As a result, we deliver the new air mass number table for the entire zenith angle range and provide the comparison of the developed model results with the results of the Link and Neuzil and the Kasten models.

© 2007 Optical Society of America

OCIS Codes
(000.3870) General : Mathematics
(000.4430) General : Numerical approximation and analysis
(010.1290) Atmospheric and oceanic optics : Atmospheric optics

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: March 12, 2007
Revised Manuscript: July 5, 2007
Manuscript Accepted: July 31, 2007
Published: October 1, 2007

Citation
Sergey N. Kivalov, "Improved ray tracing air mass numbers model," Appl. Opt. 46, 7091-7098 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-29-7091

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