阵列天线相位中心的测量方法研究

Study on Measurement of Phase Center of Array Antenna

摘要: 提出了一种测量阵列天线相位中心的方法。首先,根据阵列天线的基本原理,推导出了阵列天线相位方向图与相位中心偏移量的关系式;再结合相位中心的定义和实际测量的步骤,运用最小二乘法及其矩阵解形式计算出了相位中心的精确值;最后对提出的测量方法进行了模拟实验验证。实验证明,该测量方法可以精确地计算出相位中心的位置,并发现计算结果与测量时的读数精度有很大关系。当读数精度达到百分位时,校准误差仅为0.168%。

Abstract: A measurement method of the phase center of array antenna is proposed in this paper.First,based on the basic principle of array antenna,the relationship between the phase radiation pattern and the phase center shift is derived.Secondly,combining the definition of phase center and the steps of measurement,the precise value of phase center is calculated by using least square method and its matrix solutions form.Lastly,the proposed method is verified by simulated experiment.The results prove that,phase center ...