论文部分内容阅读
叙述中国杭州应用声学研究所和俄罗斯全俄物理技术与无线电测量科学研究院的标准水听器在0.01～1Hz频率范围内的双边比对校准方法和结果。在15个频率点上双方分别对5个不同水听器测得的开路电压灵敏度之差的平均值最小为0.02dB,最大也只有0.21dB,远小于双方合成的总扩展不确定度,这证明了两国在此频段内的水声声压标准装置都有很高的准确度。
The methods and results of bilateral alignment calibration in the frequency range from 0.01 Hz to 1 Hz are described by Hangzhou Institute of Applied Acoustics and the All-Russia Institute of Physics and Radiometric Measurement. At 15 frequency points, the average of the difference of the open-circuit voltage sensitivity measured by the two different hydrophone respectively is 0.02dB and the maximum is only 0.21dB, which is far less than the total expansion uncertainty of the synthesis of both sides, which proves Both countries have high accuracy of sound pressure standard devices in this frequency band.