The invention discloses a
main lobe interference resisting method for an airborne
radar. The method comprises the following steps: establishing a polarization area array structure and a receiving
signal model based on main / auxiliary array cancellation, constructing an APC iterative
algorithm model, and calculating an
optimal weight vector of an auxiliary channel. A variance reduction method is introduced based on a
stochastic gradient descent principle, gradient correction is performed through inner and outer loop iteration
modes to reduce the variance of stochastic
gradient estimation, an
optimal weight vector of a space domain is calculated, an
equivalent weight vector is introduced to measure a beam forming effect,an
algorithm is optimized by the combination of a polarization domain and a
spatial domain, and the method has good main beam pointing and anti-interference capabilities under the condition of
main lobe interference, realizes effective suppression of
main lobe interference, ensures correct
directivity of beam forming, beam conformal capability and adaptive zeroing capability of
side lobe interference, improves convergence speed, has the characteristic of excellent performance, and is suitable for popularization and application.