摘要
针对相控阵角跟踪的特点,分析了相控阵中不同于机扫天线跟踪的特殊误差,包括测角子阵合成信噪比、相控阵扫描特性、电轴与指向轴不重合、基线长度、量化误差、多径干扰、阵风等误差源对相控阵相位和差单脉冲角跟踪随机误差的影响,给出了它们的数学表达式,并对相控阵相位和差单脉冲与幅度和差单脉冲角跟踪的热噪声误差进行了比较。
According to the characteristics of phased array angle tracking,the influence of many error sources,such as sub-array synthetic signal-to-noise ratio,phased array scanning characteristics,misalignment between electrical axis and pointing axis,baseline length,quantization error,multipath interference,gust and other error sources,on the random error of phase sum-difference monopulse angle tracking is analyzed,and their mathematical expressions are given.The thermal noise errors of phase sum-difference monopulse and amplitude sum-difference monopulse are compared.
作者
刘嘉兴
LIU Jiaxing(Southwest China Institute of Electronic Technology,Chengdu 610036,China)
出处
《电讯技术》
北大核心
2023年第10期1486-1491,共6页
Telecommunication Engineering
关键词
相控阵天线
连续闭环角跟踪
角跟踪随机误差
相位和差单脉冲
相位噪声
phased array antenna
continuous closed-loop angle tracking
random error in angle tracking
phase sum-difference monopulse
phase noise
