Aiding location determinations in satellite positioning system receivers
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United States of America Patent
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Jan 4, 2005
Grant Date -
Dec 2, 2004
app pub date -
Jun 2, 2003
filing date -
Jun 2, 2003
priority date (Note) -
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Abstract
A method for locating a satellite positioning system receiver, for example, a satellite positioning system enabled wireless communications device in cellular network, including obtaining a coarse position and/or a time estimate (210), and computing a satellite positioning system based position and/or time solution (240) that is constrained by uncertainty information associated with the coarse position and/or a time estimate. The uncertainty constraints may also be used to identify erroneous measurements used to compute the position solution.
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