Method and apparatus for geographically aiding navigation satellite system solution
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United States of America Patent
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May 14, 2013
Grant Date -
Oct 20, 2011
app pub date -
Apr 16, 2010
filing date -
Apr 16, 2010
priority date (Note) -
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Abstract
The present invention is related to position calculation and navigation systems, and more particularly, to a method and apparatus for making accuracy improvements to a GPS receiver's navigation solutions. According to a first aspect, selective cartography information from a map database accessed by a GPS receiver from a location-aiding device is integrated into the position calculations performed by the GPS receiver. According to another aspect, selective cartography information includes indices representing associated attributes of geographical objects, such as, a width-indicator index for a road segment.
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