The adaptive zeroing algorithm can suppress satellite navigation interference signals, but it cannot guarantee the phase stability of satellite signals and cannot be used for high-precision positioning. In theory, multi beamforming algorithm must be used. This article studies a simple implementation method for digital multibeam anti-interference algorithm. Firstly, orthogonal processing of pointing and auxiliary channels is achieved through array signal preprocessing, and then interference signal suppression is achieved through adaptive signal processing. Verify the feasibility of the proposed implementation method through simulation and hardware implementation testing.