计量学报Issue(1)：84-89,6.DOI:10.3969/j.issn.1000-1158.2016.01.20
250 Hz~8 kHz频率范围水听器自由场校准补充比对
Supplementary Comparison of Free-field Hydrophone Calibrations in the Frequency Range 250 Hz to 8 kHz
摘要
Abstract
A description is given of the results of COOMET. AUV. W-S1 supplementary comparison of free-field hydrophone calibration in the frequency range 250 Hz to 8 kHz between Hangzhou Applied Acoustics Research Institute-a pilot and Russian National Research Institute for Physicotecnical and Radio Engineering Measurements. Two standard hydrophones of TC 4033 and GI 55 were calibrated in this comparison. Reciprocity and comparison methods, their calibration facilities were used to assess the current state of free-field hydrophone calibration in low frequencies. The results indicate that the sensitivities of two hydrophones calibrated by China and Russia have good consistency. The deviations at most frequncies between the sensitivites and their reference values are less than 0. 40 dB,the maximum deviation is 0. 59 dB. The results prove that the lowest frequency of free-field hydrophone calibration of China and Russia can be extended to 250 Hz.关键词
计量学/水听器/自由场校准/低频/补充比对Key words
metrology/hydrophone/free-field calibration/Low frequency/supplementary comparison分类
通用工业技术引用本文复制引用
陈毅,平自红,A.E.Isaev,A.N.Matveev..250 Hz~8 kHz频率范围水听器自由场校准补充比对[J].计量学报,2016,(1):84-89,6.基金项目
欧亚国际计量合作组织项目 （）
