Measurements of the Acoustic Path Length in Seawater at Ambient Pressure
An apparatus for highly accurate measurements of the speed of sound in seawater is presented,especially the measurements of the acoustic path length.The measurement principle is based on a path length difference technique,and the acoustic path length is determined by double-beam plane-mirror interferometer and the equipment designed by us.The measurement model was established in order to correct the deflection error in the measurement process and the uncertainty of the acoustic path length was calculated.The achieved measurement uncertainties are 0.2 μ for the acoustic path length.The high accuracy of the apparatus is demonstrated by measurements in pure water in laboratory.
Z Li Y Jiao X Wang J Zhu B Zhang
Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems,Tianjin University State Key Laboratory of Precision Measurement Technology and Instruments,Tianjin University,Tianjin,
国际会议
国际测量技术联合会(IMEKO)2017年国际测量技术研讨会
杭州
英文
320-320
2017-09-04（万方平台首次上网日期，不代表论文的发表时间）