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Developments in standards and calibration methods for hydrophones and electroacoustic transducers for underwater acoustics.

Robinson, S P; Foote, K G*; Theobald, P D (2014) Developments in standards and calibration methods for hydrophones and electroacoustic transducers for underwater acoustics. J. Acoust. Soc. Am., 136 (4). p. 2217.

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Abstract

If they are to be meaningful, underwater acoustic measurements must be related to common standards of measurement. In this paper, a description is given of the existing standards for the calibration of hydrophones and electroacoustic transducers for underwater acoustics. The description covers how primary standards are currently realised and disseminated, and how they are validated by international comparisons. A report is also given of the status of recent developments in specification standards, for example within the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). The discussion focuses on the revision of standards for transducer calibration, and the inclusion of extended guidance on uncertainty assessment, and on the criteria for determining the locations of the acoustic near-field and far-field. A description is then provided of recent developments using non-traditional techniques such as optical sensing, which may lead to the next generation of standards. A report is also given of the status of recent developments in and of a number of current initiatives to promote best measurement practice.

Item Type: Article
Subjects: Acoustics
Acoustics > Underwater Acoustics
Identification number/DOI: 10.1121/1.4900046
Last Modified: 02 Feb 2018 13:14
URI: http://eprintspublications.npl.co.uk/id/eprint/6396

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