Localizing scatterers from surf noise cross correlations | Zendy

Jie Li | Zendy; Peter Gerstoft | Zendy; Dazhi Gao | Zendy; Guofu Li | Zendy; Ning Wang | Zendy

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Localizing scatterers from surf noise cross correlations

Author(s) -

Jie Li,

Peter Gerstoft,

Dazhi Gao,

Guofu Li,

Ning Wang

Publication year - 2017

Publication title -

the journal of the acoustical society of america

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.619

H-Index - 187

eISSN - 1520-8524

pISSN - 0001-4966

DOI - 10.1121/1.4974147

Subject(s) - microphone , acoustics , noise (video) , radius , travel time , geology , physics , optics , computer science , sound pressure , engineering , computer security , artificial intelligence , transport engineering , image (mathematics)

The backscattered travel-time structure is obtained by cross-correlating air-acoustic ocean surf noise recorded on microphone pairs (separation ∼2 m) on the beach. The scatterer is a 20 cm radius Polyvinyl chloride pipe 2.5 m landside of the microphone array. Arrivals corresponding to the time-difference (travel-time difference between two scatterer-receiver paths) and scattered (travel time for receiver-scatterer-receiver path) waves emerge in the cross-correlation functions in a backscattering configuration. Theoretically, only a microphone pair is needed to locate the scatterer using the time-difference and scattered travel times. Localization of the scatterer is demonstrated with the microphone array on the beach.

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