The direction of ground-based interference reaching the satellite is generally very close to the spot beam of the satel-lite.The traditional array anti-jamming method may cause signifi-cant loss to the uplink signal while suppressing the interference.In this paper,an aperiodic multistage array is used,and a sub-array aperiodic distribution optimization scheme based on paral-lel differential evolution is proposed,which effectively improves the beam resolution and suppresses the grating lobe.On this basis,a two-stage signal processing method is used to sup-press interference.Finally,the comprehensive performance of the proposed scheme is evaluated and verified.
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