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METHOD FOR PROCESSING SIGNALS ACQUIRED BY ECHO SOUNDING, AND CORRESPONDING COMPUTER PROGRAM AND ECHO SOUNDING DEVICE
METHOD FOR PROCESSING SIGNALS ACQUIRED BY ECHO SOUNDING, AND CORRESPONDING COMPUTER PROGRAM AND ECHO SOUNDING DEVICE
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机译:处理回声测得的信号的方法,对应的计算机程序和回声测听装置
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摘要
A method for processing ultrasonic signals includes: controlling a plurality of emission transducers for L successive emissions of ultrasonic waves; controlling N reception transducers to simultaneously receive and for a predetermined time, for each successive emission, N measurement signals; obtaining an array of ultrasonic time signals of size L×N, each coefficient Ki,j(t) of this array representing the measurement signal received by the j-th reception transducer due to the i-th emission; and denoising the time signal array by removing some of the singular values and associated singular vectors obtained from a singular value decomposition of a frequency signal array obtained by transforming this time signal array, and by reconstructing a denoised time signal array based on unremoved singular values and singular vectors.
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