Method and system for determining relative positions of networked mobile communication devices
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United States of America Patent
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Apr 18, 2006
Grant Date -
Feb 19, 2004
app pub date -
Aug 11, 2003
filing date -
Aug 13, 2002
priority date (Note) -
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Abstract
Relative positions of a plurality of mobiles communication devices, which form a wirelessly networked group of mobiles, are determined at each of the mobiles of the group without the need for external positioning information obtained from a location remote from the actual locations of the mobiles of the group. The relative positions are determined at the mobiles of the group based on mobile-to-mobile range measurements, distance and direction of movement measurements and altitude measurements made at the respective mobiles.
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