System and method for augmenting a satellite-based navigation solution
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United States of America Patent
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Jul 13, 2010
Grant Date -
Dec 31, 2009
app pub date -
Oct 5, 2004
filing date -
Oct 6, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A map-matching feedback interface uses added information to bound a mapping solution and calibrate a navigation system, thus enabling the navigation system to navigate more accurately over a longer period of time. The system recognizes erroneous measurements and reduces or eliminates them from the mapping solution, thus preventing position inaccuracies. The system interfaces the navigation system with a mapping system that feeds back map-based data to the navigation system and combines the map-matching feedback data with other sensor data to produce an accurate navigation solution even in environments where GPS or dead reckoning input data is inaccurate.
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