The innovational method to locate the transponder interference based on the single GEO satellite

In this paper, the basic principle, technical essentials and the realization method has been deeply analyzed firstly. Then the Doppler frequency shift caused by the satellite transponder movement has been accurately estimated. Using the external high precision reference source, the frequency error caused by the instability of the receiver LO, satellite transponder LO and others error all can be exactly separated. Finally, the total frequency shift caused from uplink transmitter and Doppler frequency. The Geo Location algorithm realized by particle filter technology was designed based on the long time frequency date. In order to test and verify the effectiveness of the algorithm, a real system had been constructed. The result shows that the location accuracy is far better than traditional 2D searching algorithm. The realization of the location technology based on only one satellite greatly improve the radio monitoring efficiency and promote the radio management level.