ir systems num - physicsishigami/teaching/phys4083l/lab... · 2013. 1. 13. · infrared systems...
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NETD Example
x Given a staring uncooled IR imager operating in 8-12 Pm
band, with 50 Pm detectors, F/1 optics, 30 Hz bandwidth.
x Let us say the NETD spec is 50 mK – what D* does this
correspond to?
x Starting with
dADTL
fFNETD
)/#(4
*
2
ww
'¸¹·
¨©§S
x Evaluate change in radiance per unit temperature,
integrated over passband
³ u|Ow Ow
ww P
P�m
m KSrcmWatt
TKTL
TL 12
8 2
5106.7d
)300,(
x Find integrated in-band D* is | 4 u 108 cm Hz
1/2 Watt
���
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Infrared Systems Design – References
x Dereniak & Boreman, Infrared Detectors & Systems, Wiley, 1996.
x Dereniak & Crowe, Optical Radiation Detectors, Wiley, 1984.
x Hudson, Infrared Systems Engineering, Wiley, 1969.
x Lloyd, Thermal Imaging Systems, Plenum, 1975.
x Seyrafi, Electro-Optical Systems Analysis, EORC, 1985.
x Spiro & Schlessinger, Infrared Technology Fundamentals, Dekker,
1989.
x Wolfe & Zissis, The Infrared Handbook, ERIM/SPIE, 1990.
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