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Proceedings Paper

Geometrical considerations for ground-based lidar systems
Author(s): Michael E. Thomas
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Paper Abstract

Determining the precise location of low altitude ground based lidar returns is the topic of this paper. This involves consideration of the curvature of the earth and atmospheric refractivity. A closed form geometrical optics solution is obtained for a spherical earth and a modified index of refraction which has a quadratic dependence on altitude as determined by a linear temperature profile. In this way the ray path of a laser can be plotted as a function of range and azimuth in a variety of realistic atmospheres. Resulting ray paths and corresponding altitude errors are presented for near horizon measurements.

Paper Details

Date Published: 15 September 1993
PDF: 11 pages
Proc. SPIE 1968, Atmospheric Propagation and Remote Sensing II, (15 September 1993); doi: 10.1117/12.154857
Show Author Affiliations
Michael E. Thomas, Johns Hopkins Univ. (United States)


Published in SPIE Proceedings Vol. 1968:
Atmospheric Propagation and Remote Sensing II
Anton Kohnle; Walter B. Miller, Editor(s)

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