Data processing: measuring – calibrating – or testing – Measurement system – Measured signal processing
Reexamination Certificate
2007-10-23
2007-10-23
Barlow, John (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system
Measured signal processing
Reexamination Certificate
active
11389005
ABSTRACT:
This invention relates to a method for detection of a position of a wave front in a signal received by a detector. This method includes converting the signal into a digital signal, defining a working group of N successive samples in the digital signal, and processing at least some of the samples in the working group. Energy of the signal is calculated from the processed samples in the working group in terms of the root mean square over a sliding window, the window including an optimum number Lopt of samples (Lopt is less than N). Also included is detecting the position of the wave front corresponding to the position of the sample for which the energy of the signal exceeds a threshold D that depends on the value of the energy of the signal previously at the wave front, for the first time.
REFERENCES:
patent: 3887871 (1975-06-01), Aechter et al.
patent: 4414850 (1983-11-01), Miwa et al.
patent: 6137438 (2000-10-01), McEwan
patent: 6314055 (2001-11-01), Foxlin et al.
patent: 6708023 (2004-03-01), Pincenti et al.
patent: 2004/0246000 (2004-12-01), Kuppuswamy
patent: 2006/0018413 (2006-01-01), Gupta
B. T. Phung, et al. “Partial Discharge Ultrasonic Wave Propagation in Steel Transformer Tanks”; 7thInternational Symposium on High Voltage Engineering; Technische Universitat Dresde; Aug. 26-30, 1991; pp. 131-134.
Chrysostomos L. Nikias, et al., “Signal Processing with Higher-Order Spectra”, IEEE Signal Processing Magazine, Jul. 1993, pp. 10-37.
Chrysostomos L. Nikias, et al., Higher-Order Spectra Analysis A Nonlinear Signal Processing Framework, PTR Prentice Hall, pp. V-XV.
Jerry M. Mendel, “Tutorial on Higher-Order Statistics (Spectra) in Signal Processing and System Theory: Theoretical Results and Some Applications”, Proceedings of the IEEE, vol. 79, No. 3, Mar. 1991, pp. 277-305.
Chrysostomos L. Nikias, “Time Delay Estimation In Unknown Gaussian Spatially Correlated Noise”, IEEE Transactions on Acoustics, Speech, and Signal Processing, vol. 36, No. 11, Nov. 1988, pp. 1706-1714.
Hsing-Hsing Chiang, et al., “A New Method for Adaptive Time Delay Estimation for Non-Gaussian Signals”, IEEE Transactions on Acoustics, Speech, and Signal Processing, vol. 38, No. 2, Feb. 1990, pp. 209-219.
Ananthram Swami, et al., “Cumulant-Based Approach to the Harmonic Retrieval and Related Problems”, IEEE Transactions on Acoustics, Speech, and Signal Processing, vol. 39, No. 5, May 1991, pp. 1099-1109.
Kuppuswamy Raja
Louise Sebastien
Moore Philip
Portugues Iliana
Areva T&D SA
Barlow John
Pretlow Demetrius R.
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