Comparison of acoustic instruments in an atmospheric turbulent flow over water
Comparison of acoustic instruments in an atmospheric turbulent flow over water
复制标题
水中大气湍流中声学仪器的比较
DOI：
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发表时间：
1971
期刊：
影响因子：
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通讯作者：
O. A. Kuznetzov
中科院分区：
文献类型：
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作者：
M. Miyake;R. W. Stewart;R. Burling;L. R. Tsvang;B. Koprov;O. A. Kuznetzov
在1968年秋天，进行了一次国际相互比较实验，除其他外，对设计用于测量大气湍流的声学风速计进行了比较。在垂直分量的测量中获得了很好的一致性，但在顺风速度的测量中发现了一个重要的差异。这种差异在共谱中比在谱本身中更为显著。显然，在设计这种工具时必须非常小心。在水面上经常遇到的接近中性的条件下，声学仪器的信噪比不足以作为温度计，数据处理和数据分析技术的比较表明，虽然方法差别很大，但结果基本相同。
In the fall of 1968 an International Intercomparison Experiment was conducted to compare, among other things, acoustic anemometers designed for measurements of atmospheric turbulence. Excellent agreement was obtained in measurements of the vertical component, but an important discrepancy was revealed in measurements of the downwind velocity. The discrepancy proved far more significant in the cospectra than in the spectra themselves. It is evident that great care must be taken in the design of such instruments. An acoustic instrument was shown to have insufficient signal-to-noise ratio to serve as a thermometer under the near-neutral conditions often encountered over water.Comparison of the data-handling and data-analysis techniques showed that although the methods differed widely, the results were essentially identical.