Gnss Passive Radar Imaging Based On Differential Aperture

In this paper, a passive imaging scheme with differential aperture based on multiple GNSS satellites and multiple ground receivers is studied. Firstly, the passive imaging model with differential aperture is established. Then, the factors affecting spatial imaging resolution are analysed. Finally, an inversion method based on point-by-point matched filtering technology is presented. It is seen that the diversity of aperture can be used to compensate for the shortage of narrow bandwidth of GNSS signal, so as to improve the overall spatial resolution of passive radar. Simulation results verify effectiveness of related analysis.