Range Dimensional Monopulse Approach With FDA-MIMO Radar for Mainlobe Deceptive Jamming Suppression

Due to the rapid progress of electronic countermeasures, the corresponding means of electronic counter-countermeasures are urgently needed. To address the mainlobe jamming problem, frequency diverse array (FDA) radar has received extensive attention for its range-dependent feature. However, shortcomings arise, such as the invasion of new jamming styles, which may degrade the detection performance along with the applications of FDA. In this letter, with the construction of accurate deceptive jamming models based on FDA multiple-input–multiple-output, the suppression procedures are presented, which provide a new perspective for mainlobe jamming suppression considering the special jamming and drawbacks that come along with FDA systems. At first, the range-angle two-dimensional adaptive beamforming method is presented to eliminate the jamming model 1. Then, range dimensional monopulse approach is proposed to alleviate the influence of jamming model 2. Simulation examples demonstrate the effectiveness of the proposed approach.