Method for suppressing same-frequency interference of low-orbit satellites through adaptive beam forming

The invention discloses a method for suppressing same-frequency interference of a low-orbit satellite through adaptive beam forming, and the method comprises the steps: obtaining a covariance matrix # imgabs1 # of a received snapshot through employing interference data # imgabs0 # obtained through a signal model of a receiving end; estimating the direction of arrival (DOA) of the interference source under snapshot and non-stationary conditions, and setting a null width for each interference source to obtain a corresponding asymmetric conical matrix # imgabs2; feature vectors of the principal components are obtained through feature decomposition; matching the feature vector with the reconstructed steering vector; synthesizing a modified covariance matrix # imgabs3 # according to a matching result; and calculating a beam forming weight # imgabs4 # by using the corrected covariance matrix in combination with a guide vector. According to the method, the asymmetric null with any width can be independently generate