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Acoustic Remote Sensing
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DOI：10.1146/annurev-fluid-010814-014747.png)
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摘要
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Acoustic waves carry information about their source and collect information about their environment as they propagate. This article reviews how these information-carrying and -collecting features of acoustic waves that travel through fluids can be exploited for remote sensing. In nearly all cases, modern acoustic remote sensing involves array-recorded sounds and array signal processing to recover multidimensional results. The application realm for acoustic remote sensing spans an impressive range of signal frequencies (10(-2) to 10(7) Hz) and distances (10(-2) to 10(7) m) and involves biomedical ultrasound imaging, nondestructive evaluation, oil and gas exploration, military systems, and Nuclear Test Ban Treaty monitoring. In the past two decades, approaches have been developed to robustly localize remote sources; remove noise and multipath distortion from recorded signals; and determine the acoustic characteristics of the environment through which the sound waves have traveled, even when the recorded sounds originate from uncooperative sources or are merely ambient noise.
Keyword:
sound sources
beamforming
localization
deconvolution
tomography
inversion
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IF:
30.2
论文数:
611
被引数:
1.9W
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