The Research about Interference Location Based on Different Times of TDOA with Two Satellites

In this paper, we propose an interference location method based on different times of TDOA (the time difference of arrival) which only used two satellites (the main satellite and its adjacent satellite). Firstly, the model of interference location is built based on two different TDOA data and one spheroid model of earth. Subsequently, a series of practical data of communication satellites are calculated with this model and the trust-region method, aiming to test the validity of the proposed model. Furthermore, comparing with some other methods, such as some researchers based on TDOA and FDOA (the frequency difference of arrival) or TDOA method using three satellites, the result of our method is much more accurate (the interference could be located to 20 km successfully) and more available. Numerical simulations are made to verify the capability and validity of the proposed method.