G - Physics – 06 – F
Patent
G - Physics
06
F
G06F 19/00 (2006.01)
Patent
CA 2535632
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. The signals employed by the system may include sonar signals, seismic signals, ultrasonic signals, acoustic signals, electromagnetic signals, or any other suitable type of signals.
L'invention porte sur un système et un procédé améliorant la précision des évaluation des retards de signaux se propageant dans un environnement. Ledit système comporte un ou plusieurs détecteurs recevant plusieurs signaux, et un évaluateur de retards mesurant les retards entre de multiples paires de signaux, dont au moins certaines sont reçues et mesurées à différents moments. Le système comporte en outre un analyseur des données d'évaluation des retards produisant une distribution statistique des évaluation de retards et calculant à partir de cette distribution l'estimation statistique des retards. En accroissant le nombre des signaux traités par le système, on améliore leur précision d'évaluation; de plus, en calculant le médian ou le mode de distribution statistique, on améliore la tolérance au bruit. Les signaux traités par le système peuvent être des signaux: de sonar, séismiques, ultrasonores, acoustiques, électromagnétiques, ou de tout autre type compatible.
Cooper Leon N.
Intrator Nathan
Kim Ki-O
Neretti Nicola
Brown University
Ridout & Maybee Llp
LandOfFree
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