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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 22, Iss. 23 — Dec. 1, 1983
  • pp: 3684–3689

Influence of nonuniform ground reflectance on horizontal visibility

J. Gorraiz and H. Horvath  »View Author Affiliations


Applied Optics, Vol. 22, Issue 23, pp. 3684-3689 (1983)
http://dx.doi.org/10.1364/AO.22.003684


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Abstract

One of the assumptions made in calculating the horizontal visibility of black targets is that every volume element of the atmosphere or medium is illuminated by the same amount of light. This assumption has always been interpreted as a homogeneous illumination, without considering the importance of the reflectance properties of the ground extending between observer and horizon along the path of sight. This paper is a theoretical and experimental study of the effect of ground, with varying reflectance properties, on the horizontal visibility. The laboratory simulation shows that, if that part of the ground extending between observer and target has a higher reflectance than the one extending between target and horizon, the visibility may decrease by up to 15%. In the opposite case, the visibility increases.

© 1983 Optical Society of America

History
Original Manuscript: December 27, 1982
Published: December 1, 1983

Citation
J. Gorraiz and H. Horvath, "Influence of nonuniform ground reflectance on horizontal visibility," Appl. Opt. 22, 3684-3689 (1983)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-22-23-3684

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