Doppler sensor for the derivation of torsional slip, friction and related parameters
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United States of America Patent
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Apr 27, 2010
Grant Date -
Jun 12, 2008
app pub date -
Jun 19, 2007
filing date -
Jun 20, 2006
priority date (Note) -
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Abstract
An optical method and apparatus are described for the measurement of properties of a travel vehicle or a travel surface upon which the travel vehicle travels, which includes providing an incident light from a light source to the travel surface, collecting light reflected from the travel surface, determining a surface induced Doppler shift from the incident and collected light and determining at least one of a motion property of the travel vehicle and a surface property of the travel surface based on the determined surface induced Doppler shift.
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