An effective ADBF method at subarray level for plane phased array

ADBF at subarray level has important applications in phased array radar. This paper presents a sort of signal model of two-dimension ADBF at subarray level, suitable for any plane phased array. The conventional two-dimension ADBF at subarray level can be obtained by generalizing ADBF at element level, but its limitation is that adaptive processing makes the SLL (SideLobe Level) of adaptive pattern increase remarkably. We introduce two-dimension ADBF at subarray level based on MOD (Mismatched Optimum Detection), this method can suppress the SLL effectively, but introduces biggish SINR loss. Therefore, this paper combines the conventional ADBF at subarray level and the method based on MOD, which can meet the performance requirements of SLL and SINR simultaneously. Simulation results indicate the validity of the introduced method.