Studies of subarray adaptive digital beamforming for sparse phased array radar

In this paper, the adaptive digital beamforming techniques using sparse antenna subarray division are studied. Based on the model of sparse antenna array to be given, three antenna subarray architectures are compared. The criterions were: realization simplicity, adaptive antijamming performance against multiple jammers. One method that used is that of transformed constraint of subarray into conventional array constraint, and this is presented for the adaptive beamforming of subarrays. The results of the method are compared and some useful conclusions are provided. A large number of computer simulation results demonstrate the performance of this proposed method