Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2006-01-17
2006-01-17
Tran, Khai (Department: 2637)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
Reexamination Certificate
active
06987820
ABSTRACT:
An apparatus for the detection of positioning system satellite signal distortions includes a correlator that determines a plurality of correlation measurements at points along a correlation curve. The correlation measurements are based upon a correlation between a received satellite signal and a reference. A signal distortion detector determines differences between the correlation measurements along the correlation curve and detects a signal distortion from the differences.
REFERENCES:
patent: 5402450 (1995-03-01), Lennen
patent: 5414729 (1995-05-01), Fenton
patent: 5600329 (1997-02-01), Brenner
patent: 5630208 (1997-05-01), Enge et al.
patent: 5724384 (1998-03-01), Kim et al.
patent: 5729571 (1998-03-01), Park et al.
patent: 5781152 (1998-07-01), Renard et al.
patent: 6047017 (2000-04-01), Cahn et al.
patent: 6198765 (2001-03-01), Cahn et al.
patent: 6327257 (2001-12-01), Khalifa
patent: 6345068 (2002-02-01), Molev-Shteiman
patent: 6603803 (2003-08-01), Hatch
patent: 6658048 (2003-12-01), Valio
patent: WO 00/54448 (2000-09-01), None
patent: WO 01/39698 (2001-06-01), None
Article entitled “Global Positioning System Overview” from http://www.colorado.edu/geography/gcraft
otes/gps/gps.html dated Sep. 1, 2000 by Peter H. Dana , The Geographer's Craft Project, Department of Geography, The University of Colorado at Boulder, Copyright 1999—pp. 1-13.
Figure “GPS Data Bit Demodulation and C/A Code Control Block Diagram” from http://www.colorado.edu/geography/gcraft
otes/gps/gif/costas.gif dated Aug. 31, 2000. Author: Peter H. Dana, Jul. 29, 1995—p. 1 of 1.
Figure “Simplified GPS Receiver Block Diagram” from http://www.colorado.edu/geography/gcraft
otes/gps/gif/receiver.gif dated Aug. 31, 2000. Author: Peter H. Dana, Jul. 29, 1995—p. 1 of 1.
Figure “The Global Positioning System” from http:/www.colorado.edu/geography/gcraft
otes/gps/gif/figure05.gif dated Sep. 5, 2000. Author: Peter H. Dana, May 10, 1998—p. 1 of 1.
Figure “GPS Control” from http:/www.colorado.edu/geography/gcraft
otes/gps/gif/control.gif dated Sep. 5, 2000. Author: Peter H. Dana, Aug. 17, 1994—p. 1 of 1.
Figure “The GPS Navigation Solution” from http://www.colorado.edu/geography/gcraft
otes/gps/gif/figure09.gif dated Sep. 5, 2000. Author: Peter H. Dana, May 10, 1998—p. 1 of 1.
Schiff & Hardin LLP
Tran Khai
LandOfFree
Apparatus for navigation satellite signal quality monitoring does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for navigation satellite signal quality monitoring, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for navigation satellite signal quality monitoring will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3589147