06064336 is referenced by 328 patents and cites 48 patents.

A precision carrier frequency signal for calibrating a local oscillator of a GPS receiver which is used to acquire GPS signals. The precision carrier frequency signal is used to calibrate the local oscillator such that the output of the local oscillator, which is used to acquire GPS signals, is modified by a reference signal generated from the precision carrier frequency signal. The GPS receiver locks to this precision carrier frequency signal and generates the reference signal. In another aspect of the invention, satellite almanac data is transmitted to a remote GPS receiver unit from a basestation via a communication link. The remote GPS receiver unit uses this satellite almanac data to determine approximate Doppler data for satellites in view of the remote GPS receiver unit.

Title
GPS receiver utilizing a communication link
Application Number
612582
Publication Number
6064336
Application Date
August 5, 1998
Publication Date
May 16, 2000
Inventor
Norman F Krasner
San Carlos
CA, US
Agent
Blakely Sokoloff Taylor & Zafman
Assignee
SnapTrack
CA, US
IPC
G01S 5/02
H04B 7/185
View Original Source