Pulse or digital communications – Repeaters – Testing
Patent
1995-02-24
1997-12-02
Bocure, Vesfaldet
Pulse or digital communications
Repeaters
Testing
375347, 342368, H04B 1500, H04K 100, H04L 2730
Patent
active
056944160
ABSTRACT:
A navigation satellite receiver that nulls interference and enhances satellite signals using differences in their spatial positions and that includes four antennas in a spatial array respectively connected to four amplitude and phase balanced receiver downconverter channels. Five satellite tracking channels are each connected to all four receiver channels and each includes despreaders and I/Q accumulators for early, late and punctual correlation. The despreader and accumulator combinations provide four-by-one vectors called aperture estimates. A code-gated maximum likelihood processor whitens these by multiplication with the mathematical inverse Cholesky factor of the interference data. This vector is generated in a millisecond block "k" and is multiplied by a similarly generated vector formed in a previous millisecond block "k-1". The magnitude of the resulting product is used for code tracking, and the phase of the result provides for carrier tracking.
REFERENCES:
patent: 4280128 (1981-07-01), Masak
patent: 4800390 (1989-01-01), Searle
patent: 5248982 (1993-09-01), Reinhardt et al.
patent: 5274383 (1993-12-01), Godet
patent: 5455592 (1995-10-01), Huddle
patent: 5541606 (1996-07-01), Lennen
Bocure Vesfaldet
Radix Technologies, Inc.
Schatzel Thomas E.
Webster Bryan
LandOfFree
Direct sequence spread spectrum receiver and antenna array for t does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Direct sequence spread spectrum receiver and antenna array for t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Direct sequence spread spectrum receiver and antenna array for t will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-807665