Method and arrangements relating to satellite-based positioning
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United States of America Patent
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Nov 11, 2008
Grant Date -
Jun 21, 2007
app pub date -
Dec 30, 2004
filing date -
Feb 18, 2004
priority date (Note) -
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Abstract
Alleviating ambiguous pseudorange reconstruction in connection with satellite-based positioning of mobile terminals with assistance data such as Assisted GPS (AGPS). An initial pseudorange selection cycle includes: determining a first admissible pseudorange associated with a first satellite; determining all pseudoranges associated with at least two additional satellites which combined with the first pseudorange form admissible relative pseudoranges; forming a set of pseudorange vectors representing all possible combinations of the determined pseudoranges associated with the first and at least two additional satellites; and forming a set of selected pseudorange vectors by selecting at least one vector from the set of pseudorange vectors.
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