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Generalized figures of merit for infrared imaging systems.

Author: Jerry A Hawkins; TEXAS UNIV AT AUSTIN DEFENSE RESEARCH LAB.
Publisher: Ft. Belvoir Defense Technical Information Center FEB 1968.
Edition/Format:   Print book : English
Database:WorldCat
Summary:
Generalized equations for spectral noise-equivalent power (NEP sub lambda), signal-to-noise ratio, and noise-equivalent temperature difference (NETD) are derived in this report; and a new figure of merit called noise-equivalent fractional emissivity (NEFE) is obtained. These formulas were developed for use in evaluation and comparison of passive-infrared terrain-imaging systems and are proposed as generalized  Read more...
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Document Type: Book
All Authors / Contributors: Jerry A Hawkins; TEXAS UNIV AT AUSTIN DEFENSE RESEARCH LAB.
OCLC Number: 227633776
Description: 86 pages

Abstract:

Generalized equations for spectral noise-equivalent power (NEP sub lambda), signal-to-noise ratio, and noise-equivalent temperature difference (NETD) are derived in this report; and a new figure of merit called noise-equivalent fractional emissivity (NEFE) is obtained. These formulas were developed for use in evaluation and comparison of passive-infrared terrain-imaging systems and are proposed as generalized figures of merit for such systems. Approximations are kept to a minimum, and corrections are included for spatial and temporal frequency responses which have hitherto been neglected. The new equations are derived, their use and the data requirements are discussed, a sample calculation is given, and a technique for system comparison in terms of subsidiary figures of merit called performance factors is proposed. Values for the two definite integrals required for computing the figures of merit are given in the Appendix together with the data used and the method of computation. (Author).

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   schema:description "Generalized equations for spectral noise-equivalent power (NEP sub lambda), signal-to-noise ratio, and noise-equivalent temperature difference (NETD) are derived in this report; and a new figure of merit called noise-equivalent fractional emissivity (NEFE) is obtained. These formulas were developed for use in evaluation and comparison of passive-infrared terrain-imaging systems and are proposed as generalized figures of merit for such systems. Approximations are kept to a minimum, and corrections are included for spatial and temporal frequency responses which have hitherto been neglected. The new equations are derived, their use and the data requirements are discussed, a sample calculation is given, and a technique for system comparison in terms of subsidiary figures of merit called performance factors is proposed. Values for the two definite integrals required for computing the figures of merit are given in the Appendix together with the data used and the method of computation. (Author)."@en ;
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