Passive optical velocity measurement device and method
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United States of America Patent
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Apr 28, 1998
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N/A
app pub date -
Nov 4, 1996
filing date -
Nov 4, 1996
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Abstract
An optical velocity measuring device includes a pair of V/H sensors effectively located at two different distances from a moving object. Each sensor is used to determine an image velocity and a corresponding angular velocity of the object. The angular velocity measurements and the difference in distance or optical path length of the individual sensors are used to determine the absolute linear tangential speed of the object without determining the absolute distance to the object.
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