In this paper, we discuss a method for reconstructing the parameters of internal gravitational waves (IGWs) in the stratosphere from amplitude fluctuations in satellite radio-occultation observations. In the formation of radio-signal fluctuations, IGWs play the main role in these observations, while the contribution of isotropic turbulence is negligible. We consider methodological issues: (1) the choice of a model for the spatial spectrum of internal waves, (2) the derivation of relations connecting the statistical parameters of the IGW spectra and amplitude fluctuations in the approximation of a phase screen and weak fluctuations, (3) the development of a reconstruction algorithm, and (4) the estimation of possible errors. The reconstructed parameters are the outer or dominant scale and the structural characteristic of the vertical IGW spectrum, which determines the spectral amplitude in the saturation mode. The operating range covers altitudes from 28 km to the upper boundary of the tropopause. The error estimates for the reconstruction algorithm are 10–20% for the outer scale and 20–40% for the structural characteristic.

中文翻译：

---

无线电掩星实验中根据信号幅度波动重建大气内波参数

在本文中，我们讨论了一种从卫星无线电掩星观测中的振幅波动重建平流层内部引力波 (IGW) 参数的方法。在无线电信号波动的形成过程中，IGW 在这些观测中起主要作用，而各向同性湍流的贡献可以忽略不计。我们考虑方法论问题：（1）内波空间谱模型的选择，（2）IGW谱统计参数与相位屏蔽和弱波动近似中的幅度波动之间关系的推导， (3) 重建算法的开发，以及 (4) 可能错误的估计。重构参数是垂直IGW频谱的外部或主导尺度和结构特征，它决定了饱和模式下的频谱幅度。工作范围涵盖从 28 公里到对流层顶上边界的高度。重构算法的误差估计对于外部尺度为 10-20%，对于结构特征为 20-40%。