Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system
Reexamination Certificate
2008-04-22
2008-04-22
Nghiem, Michael (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Electrical signal parameter measurement system
Reexamination Certificate
active
07363177
ABSTRACT:
A system and method for increasing the accuracy of time delay estimates of signals propagating through an environment. The system includes one or more sensors for receiving a plurality of signals, and a time delay estimator for measuring time delays between multiple pairs of signals. At least some of the multiple pairs of signals are received and measured at different points in time. The system further includes a data analyzer for analyzing time delay estimation data, for generating a statistical distribution of time delay estimates from the data, and for calculating a statistical estimate of time delay from the distribution. By increasing the number of signals employed by the system, the accuracy of the time delay estimation is increased. Further, by calculating the median or the mode of the statistical distribution, noise tolerance is improved.
REFERENCES:
patent: 3681747 (1972-08-01), Walsh
patent: 4054862 (1977-10-01), Backman, Jr.
patent: 4847817 (1989-07-01), Au et al.
patent: 5481504 (1996-01-01), Rosenbach et al.
patent: 5581620 (1996-12-01), Brandstein et al.
patent: 5889490 (1999-03-01), Wachter et al.
patent: 5949739 (1999-09-01), Reese
patent: 6539320 (2003-03-01), Szajnowski et al.
patent: 7239580 (2007-07-01), Intrator et al.
patent: 7289388 (2007-10-01), Intrator et al.
patent: 2006/0004287 (2006-01-01), Rigby et al.
patent: 2007/0167802 (2007-07-01), Rigby et al.
“Joint Estimation of Time Delay and Doppler Ratio from Broadband Data Using Discrete Estimation Techniques”; David Jaarsma et al.; Planning Systems Incorporation, IEEE 1991.
Cooper Leon N.
Intrator Nathan
Kim Ki-o
Neretti Nicola
Brown University
Nghiem Michael
Weingarten Schurgin, Gagnebin & Lebovici LLP
LandOfFree
Apparatus and method for performing the time delay... 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 and method for performing the time delay..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for performing the time delay... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2753591