Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2005-05-03
2005-05-03
Bocure, Tesfaldet (Department: 2631)
Pulse or digital communications
Spread spectrum
Direct sequence
C342S135000, C701S200000, C708S201000, C711S101000
Reexamination Certificate
active
06888879
ABSTRACT:
A satellite positioning system (SATPS) receiver has a mix of standard and enhanced digital channel processors. The standard digital channel processors perform continuous tracking. During a low SNR and/or fast acquisition mode, the enhanced digital channel processor accumulates samples of a SATPS signal that are identically positioned within corresponding PRN code repetition periods, and plays back the stored accumulated values of the samples in an integration period to a correlation section for correlation with a locally generated PRN code.
REFERENCES:
patent: 4048563 (1977-09-01), Osborne
patent: 4451916 (1984-05-01), Casper et al.
patent: 5663734 (1997-09-01), Krasner
patent: 5955986 (1999-09-01), Sullivan
Interface Control Document ICD-GPS200, Sep. 26, 1984, Rockwell International Corporation, Satellite Systems Division, Downey, CA 90241.
The GLONASS System Technical Characteristics and Performance, @ Working Paper, Special Committee on Future Air Navigation Systems (FANS), International Civil Aviation Organization (ICAO), Fourth Meeting, Montreal, Quebec, Canada, May 2-20, 1988.
Bocure Tesfaldet
Kumar Pankaj
Pelton, Esq. William E.
Trimble Navigation Limited
LandOfFree
Method and apparatus for fast acquisition and low SNR... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for fast acquisition and low SNR..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for fast acquisition and low SNR... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3448918