摘要
研制了一种可用于浅水河道平均流速测量的双向声传播测流仪。该声学测流仪采用了M序列码声信号,通过利用GPS时间信号进行两个站位间异地同步水下声信号的发送和接收,实现双向声传播时间的精确测量。野外试验结果表明,声学测流仪声信号收发正常可达到使用要求。
This paper introduces a new acoustic current meter（ACM）for measurement of cross-sectional average velocity in a shallow channel. The ACM was designed for transmitting and receiving the sound signal at same time,and accurate measuring acoustic travel time between two separated stations, using the M-sequence sound signal and GPS time clock. The field test indicated that the ACM operated correctly.
出处
《电子测量技术》
2009年第2期166-169,共4页
Electronic Measurement Technology
基金
国家高技术研究发展计划(2006AA09Z102)
国家自然科学基金(40706017)
浙江省钱江人才计划(2007R10035)资助项目
关键词
声传播时间
声学测流仪
平均流速
GPS
M序列
acoustic travel time
acoustic current meter
average velocity
GPS
maximum length sequence
