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New Technique for Visualizing Three-Dimensional Flow in the Atmospheric Boundary Layer

  • M. P. Bleiweiss
  • R. A. Howerton
  • K. C. Payne
  • T. A. King
Conference paper

Abstract

The atmospheric transmission large-area analysis system (ATLAS) was developed to characterize smokes/obscurants during U. S. Army field tests. Digital image processing of data obtained from a thermal imager allows a two-dimensional map of transmission through the cloud (in a plane perpendicular to the observer’s line of sight) to be obtained. The ambient (natural) background scene in the imager’s field of view is the source against which the transmission measurements are made. The spatial resolution varies depending on the geometry of the test setup; however, X–Z resolution (Y is along the line of sight) of the order of 0. 5 m is easily obtained. The time resolution is 10 Hz. Conversion of these results to concentration is described and the results presented. The technique can be extended to three dimensions by using tomographic analysis.

Keywords

Flow Visualization Thermal Imager High Time Resolution Background Scene Tomographic Analysis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Vonder Haar, T.; Stephens, G.; Jones, A.; Shih, C. F.; Davis, J.: Analysis and Assessment of the Atmospheric Transmittance Large Area System (ATLAS). Metsat, Inc., 515 South Howes, Fort Collins, CO 80521, 1990.Google Scholar
  2. 2.
    Bleiweiss, M. P.; Howerton, R.; Valdez, R.; Payne, K.; King, T.; Hutchison, K.: A Comparison of the MPTR and ATLAS Transmissometers. Proceedings of the Smoke/Obscurants Symposium XV, U. S. Army Chemical Research, Development and Engineering Center, Aberdeen Proving Ground, MD 21010-5423, 1991.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1992

Authors and Affiliations

  • M. P. Bleiweiss
    • 1
  • R. A. Howerton
    • 1
  • K. C. Payne
    • 2
  • T. A. King
    • 2
  1. 1.U. S. Army Atmospheric Sciences LaboratoryWhite Sands Missile RangeNew MexicoUSA
  2. 2.Physical Science LaboratoryNew Mexico State UniversityLas Cruces, New MexicoUSA

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