Multi-Station Long Baseline Interferometry Passive Localization Method

This paper proposes a multi-station long baseline interferometry passive localization method. Multiple stations simultaneously receive target signals, and through inter-station differential interferometry processing, effective signal de-modulation is achieved. Through the relative motion between observation stations and the mission area, two-dimensional sampling of the target radiation signal spatial spectrum is realized, enabling inversion of the target distribution and obtaining two-dimensional ultra-high-precision positioning results. This paper models the multi-station long baseline interferometry scenario, theoretically derives the correspondence between the target distribution map and the bi-static interferometry data, presents the processing flow of the multi-station long baseline interferometry passive localization method, analyzes the positioning accuracy of this method, and verifies through simulation that the method possesses high-resolution positioning capability.