Method and apparatus for temperature compensation of an uncooled focal plane array
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 10, 2005
Grant Date -
Jul 3, 2003
app pub date -
Oct 25, 2002
filing date -
May 11, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A temperature dependent focal plane array operates without a temperature stabilization cooler and/or heater over a wide range of ambient temperatures. Gain, offset and/or bias correction tables are provided in a flash memory in memory pages indexed by the measured temperature of the focal plane array. The memory stores a calibration database, which is accessed using a logic circuit which generates a memory page address from a digitized temperature measurement of the focal plane array. The calibration database is comprised of an array of bias, gain and offset values for each pixel in the focal plane array for each potential operating temperature over the entire range of potential operating temperatures. The bias, gain and offset data within the database are read out, converted to analog form, and used by analog circuits to correct the focal plane array response.
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