Frequency weighting in broadband acoustic beamforming
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United States of America Patent
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Feb 14, 2023
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Dec 13, 2018
app pub date -
Jul 12, 2016
filing date -
Jan 13, 2015
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Abstract
Disclosed are systems and methods for processing broadband acoustic signals acquired by a plurality of acoustic sensors, using an array-signal-processing technique to compute fused-signal maps in the frequency domain for a plurality of frequency bins. In accordance with various embodiments, the fused-signal maps are combined across the frequency bins, with respective weightings that are based on eigenvalues of covariance matrices computed for the plurality of frequency bins. The combined maps can be used to locate an acoustic source in a wellbore.
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