Abstract:

Based on the wideband inverse synthetic aperture radar principle, a method of synthesizing dynamically deceptive jamming signals for micro-motion targets is proposed. The full attitude model and full polarization model are introduced into the multi-scattering center model, and formulas of microDoppler and aspect angles directly related to precession parameters are derived. The polarization scattering matrix transformation relation between targets local polarization and arbitrary radar polarization is established. On the basis of the instantaneous attitude angle, the false micro-motion phase and polarization scattering modulation factors are generated dynamically to implement distance or velocity deceptive jamming. The results of time frequency analysis and radar imaging of synthetic false targets echo show that the proposed method can effectively synthesize specific micro-motion effect, polarization scattering characteristics and structural characteristics of false target signals.