Abstract:This paper mainly studies the effective spatial domain suppression algorithm for pulse interference. Pulse interference is an effective form of interference for Global Navigation Satellite System (GNSS). Pulsed interference is not a continuous form of interference, which causes dramatic changes in the covariance matrix, therefore affects the performance of the anti-jamming algorithm. Power Inversion(PI) and Multiple Signal Classification(MUSIC) algorithms are used as examples to analyze the impact of pulsed interference on performance of spatial anti-jamming algorithm. Combining PI with the blind identification of pulse signals, under the premise of blindly identifying the pulse interference period, the PI algorithm can effectively suppress the pulse interference by taking the number of sampling points of the cycle as the number of snapshots. For MUSIC, eigenvector corresponding to the smallest eigenvalue is used as the weight. It is unnecessary to know the parameters such as the pulse period. As long as the point of high level is calculated in the points of the covariance matrix, the algorithm can effectively suppress interference.