Method for measuring time of arrival of signals in a...

Details Method for measuring time of arrival of signals in a... Method for measuring time of arrival of signals in a...

2007-11-13

2007-11-13

Tarcza, Thomas H. (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Position indicating

C342S387000, C342S463000

Reexamination Certificate

active

11553328

ABSTRACT:
A method for measuring the Time Of Arrival of signals in a communications network is provided. A transmitter emits a beacon that is a digital message of known content, followed by timing information. The message is preceded by a pseudo-random binary phase-shift keying (BPSK) modulated sequence that allows the receiver to synchronize on the received signal using the autocorrelation method. During the synchronization process, are computed the approximated Time Of Arrival (TOA) and approximated frequency difference between the local oscillator and the received signal. The content of the beacon message is then used for correcting the approximated TOA and the frequency differences, providing results of very high precision of TOA. The timing information that follows the beacon is used for network clock synchronization and for computing the distances between network nodes.

REFERENCES:
patent: 2003/0117319 (2003-06-01), Rideout et al.
patent: 2003/0227895 (2003-12-01), Strutt et al.
patent: 2005/0169233 (2005-08-01), Kandala et al.
patent: 2005/0186966 (2005-08-01), Belcea
patent: 2006/0029009 (2006-02-01), Alapuranen et al.
patent: 2006/0029010 (2006-02-01), Belcea
N. Kouguchi et al., A study of the distortion and propagation time-delay of Loran-C pulse wave based on a model of the propagation path, Electronics and Communications in Japan (Part I: Communications), vol. 75(7), p. 80-92, 1992.

Affiliated with

Also associated with

Rating

Method for measuring time of arrival of signals in a... 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 for measuring time of arrival of signals in a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for measuring time of arrival of signals in a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3815486