artificial ionospheric modification
automatic multifrequency ionospheric recorder
backward ionospheric scatter
backward propagation ionospheric scatter
Computerized ionospheric tomography
earth-ionospheric waveguide
Effect of the ionospheric dynamo
equatorial ionospheric anomaly
FPIS Forward Propagation by Ionospheric Scatter
higher-order ionospheric delay error
international satellite for ionospheric research
international satellite for ionospheric studies
ionospheric aerodynamics
ionospheric Alfven resonator
ionospheric Alfvn resonator
ionospheric and oceanic dynamo