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Proceedings Paper

Estimation of laser system pointing parameters using a near-Gaussian irradiance profile
Author(s): Sreedhar Aeddy; Deva K. Borah; David G. Voelz; Xifeng Xiao
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Paper Abstract

Laser pointing systems for small targets are mainly confronted with two pointing errors, jitter and boresight, arising due to atmospheric turbulence, mechanical vibrations and errors in optical alignment. Knowledge of these parameters provides information about the quality of the pointing and tracking system. In the past, several techniques have been investigated to estimate these parameters from returned laser signals. These include the key ratio technique, the chi-squared method and the maximum likelihood (ML) estimation technique. These techniques have been studied in the literature for Gaussian irradiance profiles. In particular, the ML estimation technique has been found to provide excellent results. In this paper, we extend the ML estimation technique from Gaussian profiles to near-Gaussian irradiance profiles. Our results show that the modified estimator performs much better than a direct application of the original ML estimator.

Paper Details

Date Published: 4 September 2009
PDF: 8 pages
Proc. SPIE 7445, Signal and Data Processing of Small Targets 2009, 74450W (4 September 2009); doi: 10.1117/12.830945
Show Author Affiliations
Sreedhar Aeddy, New Mexico State Univ. (United States)
Deva K. Borah, New Mexico State Univ. (United States)
David G. Voelz, New Mexico State Univ. (United States)
Xifeng Xiao, New Mexico State Univ. (United States)

Published in SPIE Proceedings Vol. 7445:
Signal and Data Processing of Small Targets 2009
Oliver E. Drummond; Richard D. Teichgraeber, Editor(s)

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