The influence of different parameters on the variation in the index of refraction

Miranda van Iersel; Daniel A. Paulson

doi:10.1117/12.2323903

18 September 2018 The influence of different parameters on the variation in the index of refraction

Proceedings Volume 10770, Laser Communication and Propagation through the Atmosphere and Oceans VII; 107700F (2018) https://doi.org/10.1117/12.2323903
Event: SPIE Optical Engineering + Applications, 2018, San Diego, California, United States

Abstract

Refraction effects can alter the appearance of an object near the horizon, resulting in sometimes severely distorted images of the object. The amount of distortion is determined by the curved trajectory that light rays follow through the atmosphere. Variations in the index of refraction, due to among others variations in the temperature of the atmosphere, are responsible for this curving of light rays. There are several models that can be used for to calculate the curvature of the light rays. Lehn has developed a simple model that traces light rays through a refracting atmosphere. The atmosphere is represented by spherical layers in which the temperature is taken constant. The intersections of the light ray and the boundaries are calculated in terms of the temperature and pressure of the atmosphere in this layer.

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Miranda van Iersel and Daniel A. Paulson "The influence of different parameters on the variation in the index of refraction", Proc. SPIE 10770, Laser Communication and Propagation through the Atmosphere and Oceans VII, 107700F (18 September 2018); https://doi.org/10.1117/12.2323903

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KEYWORDS

Atmospheric modeling

Refraction

Refractive index

Temperature metrology

Atmospheric turbulence

Earth's atmosphere

Atmospheric propagation

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