Robinson, SPHarris, PMAblitt, JHayman, GThompson, AVan Buren, ALZalesak, JFDrake, RMIsaev, AEEnyakov, AMPurcell, CZhu, HQWang, YBZhang, YBotha, PKruger, D2007-03-272007-06-072007-03-272007-06-072006-09Robinson, SP, et al. 2006. International key comparison of free-field hydrophone calibrations in the frequency range 1 to 500 kHz. Journal of the Acoustical Society of America, vol. 120(3), pp 1366-13730001-4966http://hdl.handle.net/10204/2099http://hdl.handle.net/10204/2099A description is given of the results of a Key Comparison of primary free-field standards for underwater acoustics at frequencies from 1 to 500 kHz. This is the first such Key Comparison exercise in the field of underwater acoustic calibration and measurement. Laboratories from UK, Germany, USA, Russia, China, Canada, and South Africa participated by calibrating three reference hydrophones, with project coordination provided by the National Physical Laboratory, UK. The agreement between the results obtained from the comparison was generally encouraging, with the calibration values reported by the laboratories agreeing within quoted uncertainties over the majority of the frequency range, and the results generally lying within a 0.5-dB band for frequencies up to 300 kHz. A discussion is given of the general sources of uncertainties in the calibrations, in particular those which are thought to have contributed to the differences in the results between laboratories. The results of the participants have been used to estimate the equivalence of national measurement standards within this field.123981 bytesapplication/pdfenCopyright: 2006 Acoustical Society of America: American Institute of PhysicsInternational key comparisonsHydrophonesPrimary free-field standardsUnderwater acousticsCalibrationsInternational tradeAcousticArticleRobinson, S., Harris, P., Ablitt, J., Hayman, G., Thompson, A., Van Buren, A., ... Kruger, D. (2006). International key comparison of free-field hydrophone calibrations in the frequency range 1 to 500 kHz. http://hdl.handle.net/10204/2099Robinson, SP, PM Harris, J Ablitt, G Hayman, A Thompson, AL Van Buren, JF Zalesak, et al "International key comparison of free-field hydrophone calibrations in the frequency range 1 to 500 kHz." (2006) http://hdl.handle.net/10204/2099Robinson S, Harris P, Ablitt J, Hayman G, Thompson A, Van Buren A, et al. International key comparison of free-field hydrophone calibrations in the frequency range 1 to 500 kHz. 2006; http://hdl.handle.net/10204/2099.TY - Article AU - Robinson, SP AU - Harris, PM AU - Ablitt, J AU - Hayman, G AU - Thompson, A AU - Van Buren, AL AU - Zalesak, JF AU - Drake, RM AU - Isaev, AE AU - Enyakov, AM AU - Purcell, C AU - Zhu, HQ AU - Wang, YB AU - Zhang, Y AU - Botha, P AU - Kruger, D AB - A description is given of the results of a Key Comparison of primary free-field standards for underwater acoustics at frequencies from 1 to 500 kHz. This is the first such Key Comparison exercise in the field of underwater acoustic calibration and measurement. Laboratories from UK, Germany, USA, Russia, China, Canada, and South Africa participated by calibrating three reference hydrophones, with project coordination provided by the National Physical Laboratory, UK. The agreement between the results obtained from the comparison was generally encouraging, with the calibration values reported by the laboratories agreeing within quoted uncertainties over the majority of the frequency range, and the results generally lying within a 0.5-dB band for frequencies up to 300 kHz. A discussion is given of the general sources of uncertainties in the calibrations, in particular those which are thought to have contributed to the differences in the results between laboratories. The results of the participants have been used to estimate the equivalence of national measurement standards within this field. DA - 2006-09 DB - ResearchSpace DP - CSIR KW - International key comparisons KW - Hydrophones KW - Primary free-field standards KW - Underwater acoustics KW - Calibrations KW - International trade KW - Acoustic LK - https://researchspace.csir.co.za PY - 2006 SM - 0001-4966 T1 - International key comparison of free-field hydrophone calibrations in the frequency range 1 to 500 kHz TI - International key comparison of free-field hydrophone calibrations in the frequency range 1 to 500 kHz UR - http://hdl.handle.net/10204/2099 ER -