05365450 is referenced by 270 patents and cites 17 patents.

A global positioning system (GPS) in which a plurality earth orbiting satellites transmit position information to mobile radio stations on earth, is provided with a separate source satellite position data broadcast digital channels and one or more dial-up service separate communication channels (selected from a data link supported by terrestrial cellular telephone and other radio packet data services) for assisting the mobile radio station to access position information from the satellites. A controller is coupled to the mobile radio station for connecting to the separate communication channel for extricating the satellite position data via separate communication channel. The controller includes a microprocessor for processing the satellite position data to enable the mobile radio station to rapidly locate and access position information from said earth orbiting satellite. A unique system for processing the data is disclosed.

Title
Hybrid GPS/data line unit for rapid, precise, and robust position determination
Application Number
7/992892
Publication Number
5365450
Application Date
December 17, 1992
Publication Date
November 15, 1994
Inventor
Charles Moses
Catonsville
MD, US
Robert Rennard
San Martin
CA, US
Ronald Bruno
Arlington
VA, US
Leonard Schuchman
Potomac
MD, US
Agent
Jim Zegeer
Assignee
Stanford Telecommunications
VA, US
IPC
G08G 1/12
G01S 5/02
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