Mitigation of Main-Lobe Deceptive Jammers With Phase-Coded Planar Array

This letter explores the mitigation of main-lobe deceptive jammers using a phase-coded planar array. At the modeling stage, a 2-D phase coding scheme is employed in the transmit planar array, along with the transmission of a linear frequency-modulated (LFM) waveform in a planar array. Such a phase-coded planar array not only preserves the waveform properties but also provides enhanced controllable beamforming capabilities in the elevation-azimuth–range 3-D domain. In the receiver, by separating and compensating the transmitted signals, the main-lobe deceptive jammers occurring in different range ambiguous regions are discriminated and suppressed. At the analysis stage, the Capon spectra and spatial filtering results are provided to verify the effectiveness of main-lobe jammer mitigation with the proposed phase-coded planar array.