摘要
为精确标定阵列天线的相位中心,提出一种校准阵列天线相位中心的方法.首先推导出阵列天线相位方向函数与天线位置偏移量的关系式,再根据阵列天线相位中心的定义和校准步骤,运用最小二乘法计算出相位中心的精确值,并对提出的校准方法进行了模拟实验验证.实验证明该校准方法可以有效地计算出阵列天线相位中心的位置.对计算结果的误差分析表明,较宽的阵列天线波束宽度和较高的相位测量精度都可以提高相位中心的校准精度.
For calibrating the phase center （PC） of array antennas precisely, a calibration method on the PC of array antennas is proposed. Firstly, the relationship between the phase radiation pattern and the position offset of the array antennas is derived. Secondly, based on the definition of the phase center of the array antennas and the steps of calibration, the precise value of the phase center is calculated by the least square method （LSM）. Then, the proposed calibration method is verified by simulation. The error analysis of the simulated results indicates that a wider half power beam width （HPBW） and a higher measurement accuracy can enhance the calibration accuracy of the phase center of array antennas.
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
2011年第3期145-149,共5页
Journal of Xidian University
关键词
阵列天线
相位中心
视在相心
校准
误差分析
array antennas
phase center
apparent phase center
calibration
error analysis
