Va. Andrianov et al., RESULTS OF USING THE NAVSTAR NAVIGATION SYSTEM TO MONITOR THE EARTHS IONOSPHERE, Earth observation and remote sensing, 14(2), 1996, pp. 179-188
Ground measurements of the parameters of radio signals from the two-fr
equency satellite navigation system Navstar are used to obtain the azi
muth and time dependences of the terrestrial ionospheric electron conc
entration. It is shown that two-frequency satellite radio measurement
systems can be used successfully to monitor the Earth's ionosphere in
real time.