Scintillation Loss

Scintillation loss in satellite communications is the degradation in received signal power caused by rapid, random fluctuations in signal amplitude and phase arising from variations in the refractive index of the Earth’s atmosphere. These fluctuations are primarily associated with ionospheric irregularities at low frequencies and with tropospheric turbulence at higher frequencies.

Scintillation effects are most pronounced at low elevations and in equatorial and high-latitude regions, where ionospheric activity is strongest. Scintillation can lead to increased bit-error rates and intermittent link outages, particularly for mobile and low-margin satellite links.