Method and system for determining absolute positions of mobile communications devices using remotely generated positioning information
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United States of America Patent
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Jul 26, 2005
Grant Date -
Feb 19, 2004
app pub date -
Aug 11, 2003
filing date -
Aug 13, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Absolute positions of global position system ('GPS') enabled mobile communications devices, which form a wirelessly networked group of GPS mobiles, can be determined at each of the mobiles based on use of wireless communications capabilities of the mobiles for obtaining relative positioning information or range measurements for the mobiles of the group. Although each of the mobiles of a group cannot establish line of sight ('LOS') communications signal reception paths with more than three GPS satellites to permit each mobile to determine its absolute position solely based on GPS signal transmissions, the mobiles can compute their respective absolute positions and the absolute positions of other mobiles if a predetermined number of LOS paths can be established and range or relative positioning information can be obtained.
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