Development of reception system for estimating ionospheric total electrons content from new beacon satellites

摘要

Accurate measurement of the ionosphere helps to improve stability of satellite operations. Also it is useful to monitor the environment. For example, ground fluctuations by the earthquake fluctuates the total electron content (TEC) of the ionosphere.Radio-wave ray paths from the beacon satellite vary by the TEC. Because the effect is different at different frequencies, TEC can be estimated by analyzing the phase difference between signals at two different frequencies. Now 150MHz and 400MHz signals are used. However, beacon satellites are old, so only 3 satellites can now be used. There are plans for new beacon satellites. In this research, we developed a receiving system corresponding to the new beacon satellites.