Data demodulation from weak navigational satellite signals

Details Data demodulation from weak navigational satellite signals Data demodulation from weak navigational satellite signals

2005-10-04

2010-02-09

Payne, David C (Department: 2611)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C342S357490

Reexamination Certificate

active

07660373

ABSTRACT:
A method to determine the polarity of navigation data from weak satellite signals is disclosed. After bit edge is detected, a method in frequency domain is used to determine the present bit polarity with the help of several prior data bits which are already known, is disclosed. The impact of residual frequency can be mitigated by frequency transform. This method is especially useful in removing the data modulation in the weak signal for subsequent long coherent integrations.

REFERENCES:
patent: 4701934 (1987-10-01), Jasper
patent: 4821294 (1989-04-01), Thomas, Jr.
patent: 5192957 (1993-03-01), Kennedy
patent: 5271034 (1993-12-01), Abaunza
patent: 5576715 (1996-11-01), Litton et al.
patent: 5768319 (1998-06-01), Durboraw, III
patent: 5966401 (1999-10-01), Kumar
patent: 5982811 (1999-11-01), Harrison et al.
patent: 6009123 (1999-12-01), Kaku et al.
patent: 6125135 (2000-09-01), Woo et al.
patent: 6392590 (2002-05-01), Kagemoto
patent: 6407699 (2002-06-01), Yang
patent: 6611756 (2003-08-01), Chen
patent: 6683923 (2004-01-01), Butts, Jr.
patent: 6933886 (2005-08-01), Sahai et al.
patent: 2003/0086363 (2003-05-01), Hernandez
patent: 2003/0147457 (2003-08-01), King et al.
patent: 2003/0227963 (2003-12-01), Dafesh
patent: 2006/0035654 (2006-02-01), Lee et al.
patent: 2008/0133126 (2008-06-01), Dupray

Affiliated with

Also associated with

Rating

Data demodulation from weak navigational satellite signals does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data demodulation from weak navigational satellite signals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data demodulation from weak navigational satellite signals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4231733