Positioning Method of Single Baseline Interferometer Based on Time Difference Direction Finding and Phase Difference Change Rate

The existing single baseline interferometer positioning system has characteristic of phase ambiguity, so it is necessary to search and accumulate the observation time to locate the radar emitter effectively. Based on the single baseline interferometer, the precise azimuth information of the radar emitter can be obtained through the single baseline time difference direction finding, and then combined with the phase difference rate of change location method, the fast and high-precision passive location can be achieved without the need for observation time accumulation. This method can effectively reduce the amount of equipment, with high positioning accuracy and fast positioning speed. It is suitable for miniaturization platform and has broad application prospects.