07421342 is referenced by 52 patents and cites 184 patents.

A mobile terminal is configured to receive wireless communications including GPS data from a terrestrial and/or satellite wireless network, and to perform pseudo-range measurements using the GPS data that is received. The mobile terminal may be configured to perform pseudo-range measurements by receiving GPS coarse/acquisition (C/A) signals from GPS satellites, estimating Doppler shifts in the received GPS C/A signals, and estimating received code phases of the GPS C/A signals using the Doppler shifts that are estimated. The estimated code phases and/or the estimated Doppler shifts of the GPS C/A signals can provide the pseudo-range measurements. By removing the Doppler shift from the received signal samples prior to performing the code phase measurement, reduced computational complexity and/or processing time may be obtained.

Title
Network-assisted global positioning systems, methods and terminals including doppler shift and code phase estimates
Application Number
11/559560
Publication Number
7421342 (B2)
Application Date
November 14, 2006
Publication Date
September 2, 2008
Inventor
Gary G Churan
Annandale
VA, US
Agent
Myers Bigel Sibley & Sajovec P A
Assignee
ATC Technologies
VA, US
IPC
G01S 5/10
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