Rear-looking apparatus and method for detecting contrails
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United States of America Patent
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-
Feb 8, 1994
Grant Date -
N/A
app pub date -
Jul 28, 1992
filing date -
Jul 28, 1992
priority date (Note) -
Expired
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Abstract
Contrail detection aft of an aircraft is provided by a rear-looking ranging system carried by the aircraft. A randomly modulated laser beam is directed into a detection volume aft of the aircraft for scatter back toward a detector on the aircraft. Bistatic mounting of a laser and a telescope of the detector preclude sensing of the scattered beam forward of the detection volume. Processing of the detected scattered beam includes cross correlation and analysis to indicate the formation of the contrail aft of the aircraft.
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