A method and system for improving the airborne radar clutter suppression performance. The method comprises: obtaining a space-time snapshot signal (101); constructing a virtual space-time snapshot signal according to the space-time snapshot signal (102); performing, according to a dimension reduction transformation matrix, dimension reduction processing on the virtual space-time snapshot signal to obtain a virtual dimension reduction space-time snapshot signal (103); calculating a covariance matrix of the virtual dimension reduction space-time snapshot signal (104); and obtaining a virtual dimension reduction STAP filter according to the covariance matrix of the virtual dimension reduction space-time snapshot signal so that the virtual dimension reduction STAP filter outputs a signal inhibited by a clutter (105). According to the method, dimension reduction processing is performed on the virtual space-time snapshot signal by using the dimension reduction transformation matrix, and the parameter dimension in the space-time snapshot signal is reduced by means of the dimension reduction transformation matrix, thereby reducing the computation complexity, reducing the number of independent and identically distributed training samples, and improving the algorithm convergence.
展开▼
