Radio acoustic sounding of the atmosphere using a FM CW radar
Radio acoustic sounding of the atmosphere using a FM CW radar
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使用 FM CW 雷达对大气进行无线电声学探测
DOI：
10.1029/rs023i004p00640
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发表时间：
1988
期刊：
影响因子：
1.6
通讯作者：
S. Pang
中科院分区：
文献类型：
--
作者：
G. Peters;D. Hasselmann;S. Pang
研究了调频连续波雷达测量大气声速剖面的方法。在对比颗粒散射体或清晰的空气湍流的声波表示一个相干的散射结构，并检查的后果。我们推导出的信号频谱的理论形状和垂直传播的声波的速度分布的例子。由于声音和晴空回波可以按频率分开，因此同时测量大气风和温度分布应该是可行的。由于调频连续波技术的良好的空间和时间分辨率，这些测量可能提供了未来远程热通量测量的可能性。
The use of a FM CW radar for the measurement of atmospheric sound velocity profiles is investigated. In contrast to particulate scatterers or clear air turbulence the sound waves represent a coherent scattering structure, and the consequences are examined. We derive the theoretical shape of the signal spectrum and present examples of velocity profiles of vertically propagating sound waves. As the sound and clear air echoes are separable by frequency, simultaneous measurements of atmospheric wind and temperature profiles should be feasible. Because of the excellent spatial and temporal resolution of the FM CW technique, these measurements perhaps offer a possibility of future remote heat flux measurements.