Pulse or digital communications – Repeaters – Testing
Patent
1980-12-01
1984-08-28
Griffin, Robert L.
Pulse or digital communications
Repeaters
Testing
343357, 343418, G01S 502
Patent
active
044687931
ABSTRACT:
A global positioning system comprises an RF receiver for receiving L.sub.1, L.sub.2 p-code or ca code modulated frequency outputs from one or more space vehicles, a multiplexer operably connected to the receiver multiplexes the L.sub.1 and L.sub.2 signals to the receiver, and code and carrier tracking loops operably connected to the receiver, each loop including a plurality of filters, one for tracking line-of-sight dynamics and another for determining ionosphere effects on the L.sub.1 and/or L.sub.2 signals.
REFERENCES:
patent: 3769585 (1973-10-01), Fremoun et al.
patent: 4286270 (1981-08-01), Veselkov et al.
patent: 4335433 (1982-06-01), Bauer et al.
Fuchser Troy D.
Holmes Jerry D.
Johnson Charles R.
Lindley Joe H.
Maher Robert A.
Bandy Alva H.
Griffin Robert L.
Merrett N. Rhys
Sharp Melvin
Texas Instruments Incorporated
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