从VLF无线电波振幅测量中恢复声-重力波特性
Recover of acoustic-gravity wave properties revealed from measurements of VLF radio wave amplitudes
摘要：
本文提出了一种由甚低频无线电信号测量确定中间层高度上声-重力波（AGW）特性的简单方法。对于相对较短的路径（小于$\sim$ 2000公里长），简单的关系得到的AGW中性密度波动的估计从无线电信号的振幅的测量。在波跳近似下，我们将无线电信号反射高度的波动与大气中气体的基本体积的AGW引起的垂直位移联系起来。利用这些关系，我们可以恢复AGW在中间层高度的一些属性。
英文摘要：
A simple method has been proposed to determine acoustic-gravity wave (AGW) properties at mesosphere heights from measurements of VLF radio signals. For relatively short paths (less than $\sim$ 2000 km long), simple relations are obtained for estimation of AGW neutral density fluctuation from measurements of amplitudes of radio signals. In the wave-hop approximation, we relate the fluctuations in radio signal reflection height with AGW-induced vertical displacement of an elementary volume of atmospheric gas. Using these relations, we can recover some properties of AGWs at mesosphere heights.
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