Premium
Coherence properties of wideband satellite signals caused by ionospheric scintillation
Author(s) -
Rufenach Clifford L.
Publication year - 1975
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs010i011p00973
Subject(s) - scintillation , wideband , coherence (philosophical gambling strategy) , amplitude , physics , bandwidth (computing) , coherence time , ionosphere , interplanetary scintillation , optics , remote sensing , computer science , telecommunications , geology , geophysics , detector , plasma , coronal mass ejection , quantum mechanics , solar wind
Radio scintillation on satellite signals caused by small‐scale irregularities in F ‐region ionospheric electron density can be an important limitation on earth‐satellite communication and navigation systems. Scintillation imposes distortion in both amplitude and phase on wideband signals. In the present work, the shallow‐modulated phase screen theory is developed in terms of coherence bandwidth including a model based on a turbulent‐like power‐law description of the irregularities. The model results usually show a greater coherence bandwidth in the signal phase than in the signal amplitude. Therefore, systems that require phase coherence over a large bandwidth should be less affected than those requiring amplitude coherence.