Research on satellite interference source location possibility based on time varying TDOA between two GEO satellites

摘要

An innovational method of satellite interference source location based on two GEO satellite has been brought out in this paper first. Then, changing pattern to the time difference of arrival has been analyzed and calculated, where the TDOA is caused by the same signal propagating through two different paths. The two different paths is changing for the observing and controlling to the satellite. Furthermore, accurate TDOA estimation method had studied and carried out under satellite communication link. And based on the estimated TDOA, the algorithm of earth surface mapping to the estimated TDOA has been designed and realized. A cluster of curves could be plotted when analyzing in different time with the true satellite orbit ephemeris. Combining with the probability distribution, the location ellipse can be obtained with confidence. Finally, the location accuracy under different movement radius of the satellite has been simulated.