paper
Infrared Systems: I. Expressions for Signal and Background Induced Noise with Space Filters
Volume Number:
7
Issue Number:
1
Pages:
Starting page
27
Ending page
33
Publication Date:
Publication Date
1 January 1971
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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.