利用VHS56、VHS90和KPG-10作为比对传递用矢量水听器,中国杭州应用声学研究所与俄罗斯VNIIFTRI开展了 5Hz～10kHz 频率范围矢量水听器校准国际比对。利用各自的自由场互易法和垂直驻波管比较法校准装置,校准了3只矢量水听器X、Y、Z通道的灵敏度。从校准结果看,一致性较好,174个频率点中,仅有一个频点的校准值与参考值的偏差略微超过参考扩展不确定度,绝大部分频率点的测量偏差都小于±0.5dB,检验和验证了中俄双方矢量水听器校准装置的准确性和可靠性。
Abstract
Using three vector receivers VHS56, VHS90 and KPG-10 as reference vector receivers, the comparison calibration of vector receivers in the frequency range 5Hz to 10kHz was performed between HAARI, China and VNIIFTRI, Russia . The sensitivities of X, Y and Z channels of three vector receivers were calibrated by free-field reciprocity calibration facilities and vertical standing wave tube comparison calibration facilities of HAARI and VNIIFTRI. The calibration results of two participants were consonant with each other. There was only one frequency points deviation between calibration results and reference values slightly exceeding the reference expand uncertainties in all 174 calibration frequency points, and the deviations at most frequency points were less than ±0.5dB, which tested and verified the correction and reliability of the calibration results of vector receivers given by both participants international calibration facilities.
关键词
计量学 /
矢量水听器 /
灵敏度 /
国际比对
Key words
metrology /
vector receiver /
sensitivity /
international comparison calibration
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