Incorporation of atmospheric blurring effects in target acquisition modeling

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1 Scopus citations


Recent investigation of atmospheric modulation transfer function (MTF) in the thermal range has shown significant spatial frequency dependence. This dependence is related to aerosol forward scatter as well as absorption effects, shown to be primary contributors to the blur in thermal imaging through the atmosphere. In this paper, the night vision laboratory (CNVEO) target acqusition search model is revised to include atmospheric MTF spatial frequency dependence. It is shown how the target acquisition probabilities and, conversly, the range at which targets can be detected are changed by the inclusion of atmospheric effects. Under weak turbulence conditions target acquisition probabilities are better than predicted by the CNVEO model at shorter ranges. For very strong turbulence, as at midday on hot days, target acquisition probabilities decrease. The improvement possible by correcting for this blur automatically in real time is significant.

Original languageEnglish
Pages (from-to)95-107
Number of pages13
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 8 Jul 1994
EventInfrared Imaging Systems: Design, Analysis, Modeling, and Testing V 1994 - Orlando, United States
Duration: 4 Apr 19948 Apr 1994

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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