Passive Synthetic Aperture Localization of Moving Radiation Source Based on High-order Polynomial Model

For the passive localization problem of moving radiation source, this paper proposes a synthetic aperture passive localization method based on high-order slant range model. This method establishes the coupling relationships between the position and velocity parameters of the airborne observation station and the radiation source according to the high-order instantaneous slant range model. Then, the received signal data is rearranged in two dimensions using the synthetic aperture related technique and various modulation terms in the azimuth of the signal data are accurately estimated. The position and velocity information of the radiation source are inverted based on the obtained modulation terms. Simulation results verify the effectiveness of the proposed method.