Two-dimensional ADBF at subarray level based on normalization method

To better apply the ADBF at subarray level to the phased array radar, the two-dimensional ADBF method at subarray level was studied. A signal model of ADBF at subarray level is presented, which is suitable for plane phased array. The normalization method was introduced into the two-dimensional ADBF at subarray level, which normalized the subarray outputs to make the noise power of each subarray be the same, and the desired quiescent pattern was achieved in the absence of jammer, thereby the conversion problem between adaptive and non-adaptive work modes was resolved. The method based on normalization processing can suppress jammer effectively and improve the sidelobe level markedly compared with the conventional method in the presence of jammer. Simulation results indicate the validity of the introduced methods.