Unlike phased array, frequency diverse array (FDA) adopts linearly increased frequency offset across the array elements, resulting in range-angle-dependent beampattern. Thus, it has application potential in the aspect of mainlobe interference suppression. In this paper, based on the multiple-input multiple-output (MIMO) scheme with multiple matched filters at receiver, a two dimensional linearly constrained minimum-variance (TD-LCMV) adaptive beamforming approach is presented for range-angle two dimensional interference suppression. Furthermore, the anti-jamming performance is analysed in two cases, i.e., linear and nonlinear frequency offsets. Simulations indicate that the FDA-MIMO with nonlinear frequency offset outperforms that with linear frequency offset in respect of effective anti-jamming performance.
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