Smeared Spectrum (SMSP) jamming is a kind of active jamming on Linear Frequency Modulated (LFM) signal radar.The jamming signals are highly similar to LFM signals in time domain and frequency domain.When the jamming signals enter from the mainlobe, it is more difficult for radar to detect the targets.To solve the problem, the hybrid polarization antenna reception system is adopted, the differences of jamming signals in adjacent Pulse Repetition Intervals (PRI) are used, and the time-domain channel and the polarization-domain channel are combined to be a joint channel to obtain the mixed signals.Then, the blind source separation algorithm is applied to separate target signals from jamming signals, and finally the target signals are obtained by pulse compression, so that the goal of anti-jamming is realized.Simulation results show that this method can effectively extract target signals from the mixed signals.