SATELLITE POSITIONING
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United States of America Patent
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N/A
Issued Date -
Jul 14, 2011
app pub date -
Sep 9, 2009
filing date -
Sep 12, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of estimating the position of a first event of interest using a satellite positioning system. The method comprises: performing in response to the first event a satellite reception function; determining at some later time whether it is possible to calculate a position estimate from signals resulting from the satellite reception function; and, if not, estimating the position of the first event based on a position estimate of a second event, wherein the second event is that closest in time to the first for which a position estimate is available. Thus, the method can provide a position estimate for the first event even if the satellite reception function fails.
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