High-precision radio frequency ranging system
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United States of America Patent
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Jun 12, 2012
Grant Date -
Sep 15, 2011
app pub date -
Mar 9, 2010
filing date -
Mar 9, 2010
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods for estimating a distance between an originator and a transponder, methods for calculating a fine time adjustment in a radio, computer-readable storage media containing instructions to configure a processor to perform such methods, originators used in a system for estimating a distance to a transponder, and transponders used in a system for estimating a distance to an originator. The methods utilize fine time adjustments to achieve sub-clock cycle time resolution. The methods may utilize offset master clocks. The methods may utilize a round-trip full-duplex configuration or a round-trip half-duplex configuration. The method produces accurate estimates of the distance between two radios.
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