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介绍了相位中心的定位方法——相位梯度法,分析了大型相控阵天线远场主瓣相位特性,明确指出大型相控阵天线相位中心位于天线的口径面上。在此基础上,结合相位梯度法与大型相控阵天线相位中心的特点,推导出了大型相控阵天线相位中心的定位方程组,该方程组可直接用于大型相控阵天线的相位中心定位,最后通过求解一个非对称加权的相控阵天线相位中心的实例验证了该大型相控阵天线相位中心定位技术的正确性。
The phase center method is introduced. The phase gradient method is used to analyze the phase characteristics of far-field main lobe of large-scale phased array antenna. The phase center of large-scale phased array antenna is clearly pointed out that the phase center of large phased array antenna is located on the aperture plane of antenna. On this basis, combining the phase gradient method with the phase center of a large phased array antenna, the localization equations of phase center of large phased array antenna are deduced, which can be directly applied to the phase center of large phased array antenna Finally, an example of phase center of an asymmetrical weighted phased array antenna is verified to verify the correctness of the phase centering technique for this large phased array antenna.