Method and system for range measurement
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United States of America Patent
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Aug 19, 2008
Grant Date -
May 31, 2007
app pub date -
Nov 21, 2006
filing date -
Nov 29, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method (200) and system (220) for range detection is provided. The system can include a sensing unit (110) for detecting a location and movement of a first object (401), and a processor (107) for providing a measure of the movement. The processor can convert the measure to a coordinate signal for moving a second object (124) in accordance with a location and movement of the first object. The system can include a pulse shaper (109) for producing a pulse shaped signal (167) and a phase detector (101) for identifying a movement from a reflected signal (166). A portion of the pulse shaped signal can be a frequency modulated region (312), a constant frequency region (316), or a chirp region (324). In one arrangement, the pulse shaper can be a cascade of all-pass filters (515) for providing phase dispersion.
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