Experimental comparison of three target acquisition models

Raviv Melamed; Yitzhak Yitzhaky; Norman S. Kopeika; Stanley R. Rotman

doi:10.1117/1.602029

Experimental comparison of three target acquisition models

Raviv Melamed, Yitzhak Yitzhaky, Norman S. Kopeika, Stanley R. Rotman

Department of Electrical & Computer Engineering

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

The role of the atmosphere in target acquisition modeling is investigated experimentally. Three models are compared to experimental results measured on the Golan Heights, Israel. Concepts considered are atmospheric attenuation versus atmospheric blur, and contrast-limited (blur-limited) versus noise-limited imaging. Results indicate that the role of the atmosphere in target acquisition is blur rather than attenuation and that for ranges of the order of a few kilometers, modern sensors are limited by atmospheric blur rather than by noise. A significant portion of the atmospheric blur derives from small angle forward scattering by aerosols, which actually increases measured temperature differences for ranges up to a few kilometers.

Original language	English
Pages (from-to)	1902-1913
Number of pages	12
Journal	Optical Engineering
Volume	37
Issue number	7
DOIs	https://doi.org/10.1117/1.602029
State	Published - 1 Jan 1998

Keywords

Aerosols
Atmospheric optics
Blur
Contrast
Light scatter
Modulation transfer function
Target acquisition
Thermal imaging
Turbulence

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
General Engineering

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title = "Experimental comparison of three target acquisition models",

abstract = "The role of the atmosphere in target acquisition modeling is investigated experimentally. Three models are compared to experimental results measured on the Golan Heights, Israel. Concepts considered are atmospheric attenuation versus atmospheric blur, and contrast-limited (blur-limited) versus noise-limited imaging. Results indicate that the role of the atmosphere in target acquisition is blur rather than attenuation and that for ranges of the order of a few kilometers, modern sensors are limited by atmospheric blur rather than by noise. A significant portion of the atmospheric blur derives from small angle forward scattering by aerosols, which actually increases measured temperature differences for ranges up to a few kilometers.",

keywords = "Aerosols, Atmospheric optics, Blur, Contrast, Light scatter, Modulation transfer function, Target acquisition, Thermal imaging, Turbulence",

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AB - The role of the atmosphere in target acquisition modeling is investigated experimentally. Three models are compared to experimental results measured on the Golan Heights, Israel. Concepts considered are atmospheric attenuation versus atmospheric blur, and contrast-limited (blur-limited) versus noise-limited imaging. Results indicate that the role of the atmosphere in target acquisition is blur rather than attenuation and that for ranges of the order of a few kilometers, modern sensors are limited by atmospheric blur rather than by noise. A significant portion of the atmospheric blur derives from small angle forward scattering by aerosols, which actually increases measured temperature differences for ranges up to a few kilometers.

KW - Aerosols

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KW - Contrast

KW - Light scatter

KW - Modulation transfer function

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KW - Thermal imaging

KW - Turbulence

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JO - Optical Engineering

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Experimental comparison of three target acquisition models

Abstract

Keywords

ASJC Scopus subject areas

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