Adaptive beam forming algorithm for MIMO radar virtual array level

The invention provides a robust adaptive beamforming algorithm method for an MIMO radar virtual array level, and the method comprises the steps: dividing sectors, enabling a desired signal and an interference signal to be in different sectors, and enabling the desired sector and the interference sector to be complementary; integrating on a complementary sector of the divided expected sector to obtain steering vectors of the expected sector and the complementary sector; deducing a constraint condition according to the calculated steering vector, and optimizing a sector-based desired signal steering vector through the constraint condition; solving an optimization problem by using SDP relaxation; the output of a self-adaptive beam former is represented by a weight, and the problem of maximizing the output signal interference noise ratio is represented as the problem of MVDR beam forming and is solved by a Capon beam former; and reconstructing an interference and noise covariance matrix by adopting a Capon spatia