Signal processing circuit for GPS receiver

Details Signal processing circuit for GPS receiver Signal processing circuit for GPS receiver

1993-05-11

1994-06-28

Blum, Theodore M.

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

Directive

Including a satellite

455 121, H04B 7185, G01S 502

Patent

active

053251008

ABSTRACT:
A signal processing circuit for a GPS receiver wherein the search time for a code phase is decreased to decrease the time required for catching of radio waves of an artificial satellite without increasing the circuit scale very much. The signal processing circuit comprises, in addition to a carrier correlator and a code correlator, a change-over circuit for changing over the connection to the code correlator so that the code correlator operates as a carrier correlator before wave forms of an object artificial satellite are caught but operates as a code correlator after waveforms of the object artificial satellite are caught.

REFERENCES:
patent: 5134407 (1992-07-01), Lorenz et al.
patent: 5223843 (1993-06-01), Hutchinson

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