Method and apparatus for correction of GPS carrier phase measure

Details Method and apparatus for correction of GPS carrier phase measure Method and apparatus for correction of GPS carrier phase measure

1997-02-18

1999-11-16

Chin, Stephen

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

H04L 700, H04L 2536, H04L 2540

Patent

active

059870842

ABSTRACT:
The output phase measures output by a digital phase lock loop (DPLL) are selectively modified to reduce instantaneous phase errors incurred whilst waiting until the DPLL locks before obtaining an accurate phase measurement of a signal. In one embodiment, the output phase of a low bandwidth DPLL is selectively modified when the input signal exhibits a significant dynamic transient by adding the error term generated by the DPLL phase detector to the output signal generated by the DPLL to generate a modified output signal used to perform phase measurements.

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