摘要
在分析数字馈相对相控阵天线波瓣指向精度的影响的基础上,通过数值模拟和分析,给出了数字馈相条件下天线波瓣最大指向误差与移相器位数之间的定量关系,并导出了移相器位数的一种选取标准。模拟计算表明,天线波瓣最大指向误差仅与阵元间距与工作波长比值以及移相器位数有关,应对这两个参数进行合理选取以提高天线波瓣的指向精度。
In analyzing the lobe direction accuracy of phased array antenna in condition of digital phasing,based on numerical simulation and analysis,the quantitative relationship between the maximum lobe direction error and the digit number of the phase shifter is given out,and a selecting standard for the digit number of the phase shifter is given.Simulation shows that the maximum lobe direction error only depends on the ratio of the array element spacing and the radar work-wavelength as well as the digit number of the phase shifter and these two parameters should be selected reasonably to improve the antenna lobe direction accuracy.
出处
《微波学报》
CSCD
北大核心
2010年第2期19-21,25,共4页
Journal of Microwaves
关键词
相控阵雷达
天线
波瓣指向
数字馈相
Phased array radar
Antenna
Lobe direction
Digital phasing
