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首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >Spectrum Analysis of Gravity Waves Based on Sensors Mounted on a New Round-Trip Airborne Flat-Floating Sounding System
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Spectrum Analysis of Gravity Waves Based on Sensors Mounted on a New Round-Trip Airborne Flat-Floating Sounding System

机译：基于安装在新型往返机载平面浮动测深系统上的传感器的重力波频谱分析

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In this study, sensors mounted on a new type of round-trip airborne flat-floating sounding system (RTAFSS) were used to obtain the observation data of the three stages of "rising, flat-floating and falling". This new sounding method has a good application prospect. We performed spectrum analysis on the normalized temperature fluctuation, and the vertical wavenumber spectrum from the rising and falling stages and the horizontal wavenumber spectrum from the flat-floating stage were obtained. This is the first time the complete gravity wave spectrum characteristics were obtained from three consecutive stages: rising, flat-floating and falling. The results show that the gravity wave spectrum of the three stages can be well obtained by RTAFSS. For the horizontal wavenumber spectrum, the spectral slope is basically around −2, and the difference in the spectral structure of the horizontal wave number spectrum may be due to the intermittent turbulent activity and the variable intensity of the gravitational wave during its propagation. This study aims to make experimental exploration of the spectrum characteristics of gravity waves by this new type of observation data. It is expected to reveal the spectrum characteristics of horizontal wavenumber in the stratosphere region of China, providing a theoretical basis for spectrum analysis in a wider space–time range after further network observation of RTAFSS.
机译：在这项研究中，传感器被安装在新型的双向机载平面漂浮探测系统（RTAFSS）上，用于获取“上升，漂浮和下降”三个阶段的观测数据。这种新的测深方法具有良好的应用前景。我们对归一化的温度波动进行频谱分析，获得了来自上升和下降阶段的垂直波数频谱和来自平坦浮动阶段的水平波数频谱。这是首次从三个连续的阶段获得完整的重力波频谱特征：上升，平坦漂浮和下降。结果表明，利用RTAFSS可以很好地获得三级重力波谱。对于水平波数频谱，频谱斜率基本上在-2附近，并且水平波数频谱的频谱结构的差异可能是由于间歇波的湍流活动和重力波在传播过程中强度的变化引起的。本研究旨在通过这种新型的观测数据对重力波的频谱特性进行实验探索。有望揭示中国平流层区域水平波数的频谱特征，为进一步对RTAFSS进行网络观测后在更宽的时空范围内进行频谱分析提供理论依据。

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