Geometrical considerations for ground-based lidar systems

Michael E. Thomas

doi:10.1117/12.154857

15 September 1993 Geometrical considerations for ground-based lidar systems

Michael E. Thomas

Proceedings Volume 1968, Atmospheric Propagation and Remote Sensing II; (1993) https://doi.org/10.1117/12.154857
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

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.

Citation Download Citation

Michael E. Thomas "Geometrical considerations for ground-based lidar systems", Proc. SPIE 1968, Atmospheric Propagation and Remote Sensing II, (15 September 1993); https://doi.org/10.1117/12.154857

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