VHF Radio Wave Space-Earth Propagation and the Ionospheric Horizontal Gradient

摘要

THe observation and study of the ionospheric TEC is an efficacious means for monitoring the aerospace. At natural disturbances such as solar flare bursts, proton events, cosmic raystorms, radio bursts, solar eclipse effect, geomagnetic storms, atmospheric oscillationby earth-quake, seismic sea waves, volcanic eruptions, tornadoes, acoustic gravity waves, travel-ling ionospheric disturbances, etc, the obsrvatory of the ionospheric TEC is a good monitor. At artificial distrubances, for instranses, the ionospheric heating modification, the ionospheric modification by spreading chemical elements, trans-ionospheric transmission of micro-wave energy to the earth fro future orbital solar power plant, etc. the satellite beacon observatory is also an alert indicator.