Ionospheric Effects
摘要
The ionosphere layer behaves as a diffusedly ionized medium exhibiting significant temporal and spatial variability, which is essentially characterized on the scales of diurnal, seasonal, and 11-year solar periodic variation. Ionosphere is known to generate a series of propagation effects on radio waves, such as absorption, refraction, delay, dispersion, polarization rotation, and scintillation, which are strong contributory factors toward the performance of satellite systems operating at 3 GHz and below. In this chapter, the characteristics of ionospheric environment and its chief propagation effects are introduced.