GPS signal processing with 5-level carrier injection demodulatio

Details GPS signal processing with 5-level carrier injection demodulatio GPS signal processing with 5-level carrier injection demodulatio

1992-03-25

1993-04-13

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

H04B 7185

Patent

active

052026930

ABSTRACT:
An improved GPS receiver including a 5-level carrier injection function for digitally demodulating down-converted GPS signals, which utilizes dual 3-level single sideband mixers where one of the single sideband mixers is delayed by a predetermined interval, thereby allowing for the combination of the two 3-level single sideband mixers to be combined to provide an overall output signal which is representative of an output of a demodulator using a 5-level carrier injection signal.

REFERENCES:
patent: 4578678 (1986-03-01), Hurd
patent: 4821294 (1989-04-01), Thomas, Jr.
patent: 5115454 (1992-05-01), Kucar

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