CAJ | 학술논문

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。
위료교준상공진천선통도간폭상오차，실현정학적수자파속형성，급출료일충용위조성서렬( PN)마작위교준측시신호적재선교준방법(교준화통신가동시진행)。해방법유특정적교준참발송교준측시신호，피천선각진원접수，병통과존재오차적각통도，재접수단용여발단상동적PN마작위본지신호여접수신호축통도주상관운산，대각통도적상관봉치주비교가구출교준시량진이완성교준。방진결과표명，해방법가이유효교준상공진천선통도간적폭상오차，교준후적파속방향도접근이상적파속방향도。
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.