Self-adaption wave beam forming method of broadband array under main lobe jamming

The invention discloses a self-adaption wave beam forming method of a broadband array under main lobe jamming, and aims at solving the problems of peak displacement, main lope widening and side lope elevating when main lope jamming inhibiting is conducted in the prior art. The method is characterized in that a Capon spectral estimation method is utilized to estimate a main lope jamming direction;main lope jamming components of a signal is eliminated through a blocking matrix; focusing processing is conducted on the signal on which main lope jamming eliminating is conducted, and a covariance matrix of a focus output signal is reconstructed; the reference frequency optimum weight under the constraint condition of constant main lope sub spatial projection is solved; focusing invert transformation is conducted on the reference frequency optimum weight to obtain corresponding weight vectors of each frequency, the signal is weighted, and a wave beam forming output signal of the array is obtained. The method has the