REDUCED ACQUISITION TIME FOR GPS COLD AND WARM STARTS

摘要

A system and method for reducing acquisition times in a GPS receiver (30) enables determination at start-up of the GPS receiver (30) of the occurrence of ephemeris data at the GPS receiver (30) being older than approximately two hours or a change in a mobile country code and mobile network code of a cellular device (10) associated with the GPS receiver (30). Data is obtained for the GPS receiver (30) from a reference server (20) responsive to occurrence of one of these conditions and the position of the GS receiver (30) is determined at a reduced acquisition time using the obtained data.