Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Patent
1997-04-24
1999-08-31
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
3423571, 703213, H04B 7185, G01S 502
Patent
active
059459441
ABSTRACT:
A method and apparatus of determining the time for a global positioning system receiver is disclosed. Timing signals derived from a communication system, such as cellular phone transmission signals, are received by a GPS receiver and decoded to provide accurate time information. The timing signals may be in the form of synchronized events marked by timing indicators, or as system time information. The timing signals in combination with satellite position signals received by the GPS receiver are used to determine the position of the GPS receiver.
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Blum Theodore M.
SnapTrack, Inc.
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