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Journal of Applied Remote Sensing

Determination of the overlap factor and its enhancement for medium-size tropospheric lidar systems: a ray-tracing approach
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Paper Abstract

The problem of overlap factor (OVF) computation and its near-range sensitivity for medium-size aperture (f/10 , f/11 ) bi-axial tropospheric lidar systems using ray-tracing simulation software is presented. The method revisits both detector and fiber optics coupling alternatives at the telescope focal-plane along with the insertion of a field lens. A sensitivity analysis is carried out as a function of laser divergence, field lens, and detector/fiber positions, detector size, and the fiber’s core diameter and numerical aperture. The ray-tracing approach presented here is straightforward and a comparatively much simpler solution than analytical-based methods. Parametric simulations are carried out to show that both approaches are coincident. Insertion of a field lens proves to be an elegant and low sensitivity solution for OVF enhancement, particularly, in the near-range of the lidar.

Paper Details

Date Published: 31 January 2013
PDF: 15 pages
J. Appl. Rem. Sens. 7(1) 073591 doi: 10.1117/1.JRS.7.073591
Published in: Journal of Applied Remote Sensing Volume 7, Issue 1
Show Author Affiliations
Dhiraj Kumar, Univ. Politècnica de Catalunya (Spain)
Francesc Rocadenbosch, Univ. Politècnica de Catalunya (Spain)

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