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Proceedings Paper

Tracking and higher-order correction tradeoffs for beam correction through strong turbulence
Author(s): Byron M. Welsh; Michael C. Roggemann; Andrew Schepler
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Paper Abstract

The problem of optimally pointing a laser beam is commonly referred to as the tracking problem. Accurately pointing the beam in the presence of scintillated atmospheric conditions is difficult. The objective here is to understand the limitations of how well we can point a laser beam to a target point under long path, scintillated conditions. We investigate performance for both the case of tilt-only compensation and tilt compensation used in conjunction with higher order compensation. For the scintillated conditions considered here we find that only when we considered higher order compensation in conjunction with tracking do we see benefit from tracking. This leads us to claim that the tracking problem is difficult, if not impossible, to decouple form the high order compensation problem for the scintillated conditions considered in this work.

Paper Details

Date Published: 17 November 2000
PDF: 11 pages
Proc. SPIE 4125, Propagation and Imaging through the Atmosphere IV, (17 November 2000); doi: 10.1117/12.409308
Show Author Affiliations
Byron M. Welsh, Mission Research Corp. (United States)
Michael C. Roggemann, Michigan Technological Univ. (United States)
Andrew Schepler, Mission Research Corp. (United States)

Published in SPIE Proceedings Vol. 4125:
Propagation and Imaging through the Atmosphere IV
Michael C. Roggemann, Editor(s)

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