Enhanced backscatter analysis for long-range optical tracking in deep turbulent conditions

Christopher A. Smith; Sara B. Belichki; Joseph T. Coffaro; Michael G. Panich; Landon J. Splitter; Larry C. Andrews; Ronald L. Philips; David T. Wayne

doi:10.1117/12.2203564

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4 September 2015 Enhanced backscatter analysis for long-range optical tracking in deep turbulent conditions

Christopher A. Smith, Sara B. Belichki, Joseph T. Coffaro, Michael G. Panich, Landon J. Splitter, Larry C. Andrews, Ronald L. Philips, David T. Wayne

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Proceedings Volume 9614, Laser Communication and Propagation through the Atmosphere and Oceans IV; 96140A (2015) https://doi.org/10.1117/12.2203564
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

The usage of long-range optical systems for tracking applications encounters regions of deep turbulence throughout propagation. Such conditions lead to the inability to remain on target for a tracked object due to scintillation. To mitigate this issue, a double pass optical system is utilized as a means of tracking enhanced backscatter (EBS) and thus keeping alignment while characterizing turbulent conditions. EBS is detected through image processing algorithms that capture the returning constructive interference from the target. This paper evaluates EBS optical systems using a retro-reflector at a 1 kilometer distance in order to validate theoretical models that typify atmospheric turbulence regarding low-ground propagation. Meteorological conditions are also included in the empirical data obtained for the analysis of atmospheric conditions that contribute to non-homogenous turbulent conditions along the path.

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Christopher A. Smith, Sara B. Belichki, Joseph T. Coffaro, Michael G. Panich, Landon J. Splitter, Larry C. Andrews, Ronald L. Philips, and David T. Wayne "Enhanced backscatter analysis for long-range optical tracking in deep turbulent conditions", Proc. SPIE 9614, Laser Communication and Propagation through the Atmosphere and Oceans IV, 96140A (4 September 2015); https://doi.org/10.1117/12.2203564

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