【作者】 张军； 陈毅； 平自红；

【Author】 ZHANG Jun;CHEN Yi;PING Zi-hong;Hangzhou Applied Acoustics Research Institute;

【机构】 杭州应用声学研究所；

【摘要】 阐述了两种水中声速测量原理和方法,包括基于经验公式的间接测量法和基于脉冲时差的直接测量法,其中间接测量法采用了常用的简化版Wilson海水声速经验公式,直接测量法有距离与时间、波长和频率两种实现公式,分别对这三种公式得到的声速精度进行了分析,得出为了实现0.01m/s的声速测量精度而所需的各参数测量精度。为水中声速测量系统的各构成部分明确了技术指标要求。更多还原

【Abstract】 In order to achieve the accuracies for different measuring methods of sound speed in water,theories for most methods are expatiated and analyzed,including indirect method based on liquid empirical equations,and direct method based on sound transmitting process techniques with physical equations.In order to get accuracy of speed with 0.01 m/s,precision of the physical parameters are analyzed and given eventually,which is very useful for sound speed measuring system composing.更多还原