Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1986-12-30
1988-03-01
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250334, 358113, G02B 2610
Patent
active
047288043
ABSTRACT:
A scanning infrared sensor scans an array of detector elements across a field of view and samples the detector elements at a predetermined rate. The detector elements are sampled with a common sample frequency and with predetermined time phase values, are processed through delay elements such that the delayed detector output signal values are out of time phase, and are supplied to a multiplexer. The multiplexer produces a series of discrete signals at equal time intervals having an effective sample rate which is a multiple of the individual detector element sample rate, thereby reducing the complexity of processing circuitry, the number of interconnections required between the focal plane array and on-gimbal circuitry, and the size and weight of delay elements.
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Allen Stephone B.
Nelms David C.
The Boeing Company
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