相控阵测控技术(三):相控阵连续闭环角跟踪的随机误差  

Phased Array TT&C Technology--Part Ⅲ:Random Error in Continuous Closed-loop Angular Tracking Using Phased Array Antenna

作　　者：刘嘉兴[1] LIU Jiaxing(Southwest China Institute of Electronic Technology,Chengdu 610036,China)

机构地区：[1]中国西南电子技术研究所,成都610036

出　　处：《电讯技术》2023年第10期1486-1491,共6页Telecommunication Engineering

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.

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 

分 类 号：TN821.8[电子电信—信息与通信工程]