Measurement of the Sound Field Radiated from Submerged Structure by Continuous Scanning

Abstract:

Distinguished from the conventional discrete-point measurement, a continuous scanning measurement method of the sound field radiated from submerged structure is proposed. By rotating the structure uniformly and continuously, the pressure signals were recorded by the hydrophones array that was located in the far field. The signals were analyzed by Fourier transform respectively, and the sound field information could be obtained by the further derivation. By using the continuous scanning measurement, the spectrum broadening phenomenon was observed and analyzed. And then the point sound source field simulation and the sound power measurement experiment were carried out to prove the reliability of this method. The results show that, compared with the conventional discrete-point measurement, the continuous scanning measurement can acquire more information in less measurement time, and reduce the measurement work greatly under good measurement accuracy.

• Periodical: Advanced Materials Research (Volume 811)
• Pages: 337-340
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.811.337
• Online since: September 2013
• Authors: Chao Zhang, De Jiang Shang, Qi Li
• Keywords: Continuous Scanning Measurement, Fourier Transform, Sound Field Radiated

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