Patent ID: 6542821
Filing Date: 2003-04-01
Classification: G01C,G01S,G06F,H01Q,H03D,H03J,H04B

Abstract:
A method for using a GPS receiver having a communication system, said method comprising:activating said GPS receiver in a first mode of operation which comprises: receiving first GPS signals from in view satellites; demodulating said first GPS signals to extract satellite information regarding in view satellites and computing pseudorange information for said in view satellites; activating said GPS receiver in a second mode of operation which comprises: receiving second GPS signals from in view satellites; receiving non-differential GPS satellite assistance data from said communication system, wherein said non-differential GPS satellite assistance data comprises at least one of: (a) identification information for in view satellites; (b) an approximate location of said GPS receiver; and (c) satellite ephemeris information transmitted from a non-satellite source; processing said second GPS signals to determine pseudoranges to in view satellites.