| 摘要 |
A method of providing an estimate of the location of first and second devices MS1, MS2 comprising the steps of obtaining at least one range measurement from the first device MS1 to a known reference point BS1, GPS SVs; obtaining at least one range measurement from the second device MS2 to a known reference point BS1, GPS SVs, the second device MS2 being located near to the first device MS1; and calculating an estimate of the location of the devices MS1, MS2 using range measurements obtained with respect to both the first and second devices MS1, MS2.
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