Measurement And Validation Of Ionospheric Tec Based On Chinese Area Positioning System

One of the satellites of CAPS(Chinese Area Positioning System) can retransmit the dual-frequency signal, so it is possible for ionospheric TEC measurement based on CAPS. A new method of ionospheric TEC measurement is introduced in this paper. The experiment system was established and an experiment was executed. The ionospheric TEC was deduced and the accuracy was validated in two methods. It is proved that the accuracy of TEC measurement is better than 1TECu. Moreover, we give the point image of the satellite both before range compensation and after range compensation based on the TEC measured in this paper. The point characteristics is obvious better after range compensation.