Study of the Influencing Factors in the High-frequency Hydrophone Calibration Based on the Two-transducer Reciprocity Method
YANG Ping1,FENG Yan-qiang2,ZHU Hai-jiang2
1.National Institute of Metrology, Beijing 100013, China
2.School of Information and Technology, Beijing University of Chemical Technology, Beijing 100029, China
Abstract：Two-transducer reciprocity method is one of the primary method for high-frequency hydrophone calibration because of its dependence only on electric quantities. Several factors are studied except the electric quantities, such as the effective radius of the auxiliary transducer, acoustic field symmetry, soaking time, oxygen content and attenuation correction. Experiment shows that, if the diffraction value G1 and averaging factor G2 is calculated precisely, the effective radius and attenuation correction will introduce rather large uncertainties, the influence of field symmetry, soaking time and oxygen content can be neglected. Experiment data show that, the calibration results between 0.5～15 MHz are very close to the results of NPL by laser methods.
杨平,冯延强,祝海江. 两换能器互易法校准高频水听器若干影响因素的研究[J]. 计量学报, 2012, 33(2): 144-148.
YANG Ping,FENG Yan-qiang,ZHU Hai-jiang. Study of the Influencing Factors in the High-frequency Hydrophone Calibration Based on the Two-transducer Reciprocity Method. Acta Metrologica Sinica, 2012, 33(2): 144-148.
［1］Bajram Zeqiri, Nigel D Lee. BIPM/CIPM Key Comparison CCAUV.U-K2:Comparison of 1mm hydrophone calibrations in frequency range 1 MHz to 15 MHz［R］. NPL Report DQL-AC RES 013,2005.
［2］国际电工委员会 IEC 62127-2—2007, Calibration for ultrasonic fields up to 40 MHz［S］. 2007.
［3］国家质量技术监督局 GB/T 15611—1995, 声学 高频水听器校准 ［S］. 1995.
［4］国际电工委员会 IEC 60866—1987, Characteristics and calibration of hydrophones for operation in the frequency range 0.5 MHz to 15 MHz ［S］. 1987.
［5］Von B Fay.Numerische Berechnung der Beugungsverluste im Schallfeld von Ultraschallwandlern ［R］.ADD303633, 1976.
［6］Beissner K.Exact Integral Expression for the Diffraction Loss of a Circular Piston Source ［J］. ACUSTICA,1981, 49（1）:212-217.
［7］国际电工委员会 IEC 61161—2006, Power measurement-Radiation force balances and performance requirements ［S］.2006.
2012, Vol. 33 
