Digital circuit for correcting phase shift of digital signal

Details Digital circuit for correcting phase shift of digital signal Digital circuit for correcting phase shift of digital signal

G - Physics

01

S

343/112

G01S 11/00 (2006.01) G01S 1/00 (2006.01) G01S 11/08 (2006.01)

Patent

CA 1266316

ABSTRACT OF THE DISCLOSURE A GPS receiver comprises a phase-error derivation circuit which derives the average phase error over a predetermined period. The phase-error derivation circuit sends an average phase difference signal to a numerically controlled oscillator to control its clock rate. Deriving the average phase error over the predetermined period makes it possible to derive the phase error between the Gold code sequence from the satellite and the Gold code sequence derived by the local Gold code generator precisely.

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