一种用PN码校正相控阵天线通道误差的新方法  

A New Method of Calibrating Phased Array Antenna Using PN Sequence

作　　者：韩小娟[1] 何兵哲[1] 楼大年[1] 张宁[1] 

机构地区：[1]中国空间技术研究院西安分院,西安710100

出　　处：《电讯技术》2014年第3期307-311,共5页Telecommunication Engineering

基　　金：国家高技术研究发展计划(863计划)项目(2012AA01A503)~~

摘　　要：为了校准相控阵天线通道间幅相误差,实现精确的数字波束形成,给出了一种用伪噪声序列(PN)码作为校准测试信号的在线校准方法(校准和通信可同时进行)。该方法由特定的校准站发送校准测试信号,被天线各阵元接收,并通过存在误差的各通道,在接收端用与发端相同的PN码作为本地信号与接收信号逐通道做相关运算,对各通道的相关峰值做比较可求出校准矢量进而完成校准。仿真结果表明,该方法可以有效校准相控阵天线通道间的幅相误差,校准后的波束方向图接近理想的波束方向图。In order to calibrate the amplitude-phase error of phased array antenna and achieve more accurate performance of digital beamforming, this paper provides a calibration method based on the pseudorandom （ PN） sequence. In this method, pseudorandom sequence is used as the calibration test signal and the cali-bration can be proceeded at the same time as communication. The PN sequence is sent by a calibration sta-tion and received by the antenna, and passes the channals in which amplitude-phase error exists. At the re-ceiving terminal, the local codes correlate with the received signal and calculate the calibration vector. The simulation results show that this method can calibrate the amplitude-phase error of phased array antenna.

关 键 词：相控阵天线 数字波束形成 幅相误差 PN码 在线校准 

分 类 号：TN911.5[电子电信—通信与信息系统]