METHOD AND SYSTEM FOR DETERMINING ABSOLUTE POSITIONS OF MOBILE COMMUNICATIONS DEVICES USING REMOTELY GENERATED POSITIONING INFORMATION

摘要

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 positionin g information or range measurements for the mobiles of the group. Although the mobiles of a group cannot establish line of sight (~LOS~) communications signal reception paths with a sufficient number of 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 a nd the absolute positions of other mobiles if a predetermined number of LOS pat hs can be established and based on the obtained range or relative positioning information.