对于机载有源相控阵雷达,天线低副瓣是最基本也是最重要的指标要求之一。有效、实时的幅度和相位校准是保证 天线低副瓣指标的主要保证措施。文中详细描述了在有源相控阵天线系统中存在的幅相误差原理,给出了对幅度和相位 进行实时校准的算法,同时也给出了校准剩余误差的验证方法,并通过软件流程框图给出了实时校准的流程,最后,通过 在真实雷达中的实验结果验证了该方法的可行性和正确性。

Low sidelobe of antenna is one of the most basic and important requirements for the airborne active phased array radar. The real-time and effective calibration of amplitude and phase is the main measure to ensure the requirement of low sidelobe antenna. The theory of amplitude and phase error which exits in the active phased array antenna system is described detailedly in this paper. The real-time calibration algorithm of amplitude and phase and the verification method of remainder error are proposed in this article, and the flow of the real-time calibration is illustrated by the software flow chart. Finally, the feasibility and correctness of the proposed methods are approved by the experiment results for the real radars.