Numerical simulations of intensity scintillation using the power law phase screen model

Simulations of radio wave scintillation in power law media were performed to study the structure of the intensity and phase spectra when the Fresnel radius is much smaller than the outer scale or the low‐frequency limit of the power law regime in the in situ irregularity spectrum. The results verify the critical dependence of intensity scintillation on the power law index as predicted by both asymptotic and more refined theoretical computations. Because of more recent findings, the scintillation characteristics of propagation in media characterized by a two‐component power law were also investigated. The results reconcile the interpretation of scintillation data from the Wideband satellite which showed a shallowly sloped power law phase spectrum with more recent intensity scintillation data.