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Proceedings Article

Speckle imaging over horizontal paths

[+] Author Affiliations
Carmen J. Carrano

Lawrence Livermore National Lab. (USA)

Proc. SPIE 4825, High-Resolution Wavefront Control: Methods, Devices, and Applications IV, 109 (November 1, 2002); doi:10.1117/12.453519
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From Conference Volume 4825

  • High-Resolution Wavefront Control: Methods, Devices, and Applications IV
  • John D. Gonglewski; Mikhail A. Vorontsov; Mark T. Gruneisen; Sergio R. Restaino; Robert K. Tyson
  • Seattle, WA | July 07, 2002

abstract

Atmospheric aberrations reduce the resolution and contrast in surveillance images recorded over horizontal or slant paths. This paper describes our recent horizontal and slant-path imaging experiments of extended scenes as well as the results obtained using speckle imaging. The experiments were performed with an 8-inch diameter telescope placed on either a rooftop or hillside and cover ranges of interest from 0.5 km up to 10 km. The scenery includes resolution targets, people, vehicles, and other structures. The improvement in image quality using speckle imaging is dramatic in many cases, and depends significantly upon the atmospheric conditions. We quantify resolution improvement through modulation transfer function measurement comparisons.

© (2002) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Carmen J. Carrano
"Speckle imaging over horizontal paths", Proc. SPIE 4825, High-Resolution Wavefront Control: Methods, Devices, and Applications IV, 109 (November 1, 2002); doi:10.1117/12.453519; http://dx.doi.org/10.1117/12.453519


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