A phase screen simulation experiment is designed to model radio occultation signals through sporadic-E layers for a GPS transmitter operating at the L1 (1575.42 MHz) frequency. A series of simulations is performed for various sporadic-E parameters in an attempt to validate a linear relationship between the blanketing sporadic-E plasma frequency and the S₂ scintillation. The S₂-fbEs relationship is found to be linear over a select range of sporadic-E intensities, but shows a nonlinear relationship for lower fbEs values and plateaus at elevated intensities. A spectral method for estimating fbEs from the spatial Fourier transform of the signal intensity is introduced and explored using the final peak frequency of the low frequency plateau. This metric is shown to have direct relationships to key sporadic-E parameters and is resistant to noise in the applied signal. However, it requires strong scatter conditions to form which corresponds to fbEs values above ~4 MHz for typical sporadic-E lengths and thicknesses. A combined approach using the S₂ index for moderate events and the final peak frequency of the low-frequency plateau for stronger events will provide improved plasma frequency estimates for the range of observed sporadic-E frequencies.

设计了一个相位屏蔽仿真实验，以通过零星E层对以L1（1575.42 MHz）频率工作的GPS发射机的无线电掩星信号进行建模。为验证散发性E等离子体频率与S ₂闪烁之间的线性关系，对各种散发性E参数执行了一系列模拟。S ₂发现-fbEs关系在零星E强度的选定范围内是线性的，但是对于较低的fbEs值和强度升高的平稳状态显示非线性关系。引入并探索了一种利用低频高原的最终峰值频率从信号强度的空间傅立叶变换估计fbE的频谱方法。该度量标准已显示出与关键的偶发E参数有直接关系，并且可以抵抗所施加信号中的噪声。但是，它需要形成强散射条件，对于典型的零星E长度和厚度，该条件对应于高于〜4 MHz的fbEs值。使用S _2的组合方法 中度事件的频率指数和较强事件的低频高原的最终峰值频率将为观察到的零星E频率范围提供更好的血浆频率估计。