Narrowband noise mitigation in location-determining signal...

Details Narrowband noise mitigation in location-determining signal... Narrowband noise mitigation in location-determining signal...

2007-02-13

2007-02-13

Urban, Edward F. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S272000, C455S278100

Reexamination Certificate

active

10334683

ABSTRACT:
System and method for mitigating the effects of narrowband noise in a location-determining signal are provided, wherein the location-determining signal is associated with a periodic reference signal, the embodiments include identifying a set of noisy frequencies in the signal, determining a set of frequencies to be removed, and removing the set of frequencies from either the location-determining signal or the reference signal, thereby removing the effects of narrowband noise from the location-determining signal.

REFERENCES:
patent: 4658426 (1987-04-01), Chabries et al.
patent: 5410750 (1995-04-01), Cantwell et al.
patent: 5612978 (1997-03-01), Blanchared et al.
patent: 6560445 (2003-05-01), Fette et al.
patent: 6615024 (2003-09-01), Boros et al.

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