paper// IEEE Transactions on Aerospace and Electronic Systems

Infrared Systems: I. Expressions for Signal and Background Induced Noise with Space Filters

Issue Number:
1
Volume Number:
7
Pages:
Starting page
27
Ending page
33
Author(s)

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Abstract

The purpose of this paper is to investigate the signal from an IR detector in a system employing a moving space filter. The space filter may be a reticle or simply a "flying spot" aperture. When the IR detector output is caused by background radiation, the Wiener spectrum description is presumed adequate. The linear scanning case is considered in greater detail. A calculation of the detector output spectrum is made, assuming a generally accepted Wiener spectrum and a scanning rectangular aperture.