System and method for determining a position of a vehicle
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United States of America Patent
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-
Jan 12, 2010
Grant Date -
Oct 5, 2006
app pub date -
Aug 19, 2005
filing date -
Mar 31, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A time estimator determines a first aggregate elapsed time between the transmission of the first transmission signal to a first beacon and receipt of a return signal, a second aggregate elapsed time between the transmission of the first transmission signal to a second beacon and receipt of a return signal, and a third aggregate elapsed time between the transmission of the first transmission signal to a third beacon and receipt of a return signal. A bias compensator compensates for bias delay associated with at least one of the first transmitter, the first beacon, the second beacon and the third beacon. A converter converts the first aggregate elapsed time, the second aggregate elapsed time, and the third aggregate elapsed time into position curves. A data processor estimates a position of the vehicle at a confluence or intersection of the position curves.
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