Enhanced ADBF Architecture for Monopulse Angle Estimation in Multiple Jammings

Motivated by the need to cope with different jamming scenarios in modern electronic warfare, an enhanced processing architecture is proposed for phased array radar by reversing the conventional order of adaptive beamforming and monopulse beamforming. Specifically, each row or column is utilized as the identical subarray for adaption and multiple degrees of freedom are exploited. The full-aperture monopulse beamforming is, then, performed along column and row. Without any prior knowledge, the mainlobe and/or sidelobe jammings can be canceled simultaneously, whereas the angle estimation accuracy is well preserved. Simulation results illustrate the efficiency of this technique with a rectangular array. Additionally, evaluation shows the subarray-based scheme maintains the high performance of both jamming cancelation and angle estimation at a low cost.