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相控阵天线是隐身武器平台的重要散射源。该文通过相控阵天线散射模型对其模式项宽带散射特性进行仿真计算,并采用旋转目标散射中心成像方法对天线RCS仿真数据进行微波成像,研究了相控阵天线模式项散射的基本规律,并得到其散射中心分布图。仿真结果表明,相控阵天线斜置和天线端口阻抗匹配可大大减小威胁区域内模式项散射。研究结果对相控阵天线模式项RCS缩减工作具有良好的指导意义。
Phased array antennas are an important source of scatter for stealthy weapon platforms. In this paper, the scattering characteristics of the mode term of the phased array antenna are simulated by the phased array antenna scattering model. The RCS simulation data of the antenna is imaged by using the rotating target scattering center imaging method. The basic law of mode-term scattering of the phased array antenna is studied. And get its scattering center distribution. Simulation results show that phased array antenna skew and antenna port impedance matching can greatly reduce mode-term scattering in the threat area. The research results have a good guiding significance for RCS reduction of phased array antenna mode item.