摘要
自适应阵列天线使用空间谱估计中的多信号分类(MUSIC)算法估计信号到达角时,阵列天线物理特性的不一致直接影响到达角的估计精度。文章提出一种阵列通道校准方法,综合考虑阵元互耦、安装误差和通道失配,在引入辅助信号源的情况下,从实测来波方向中通过最优化的手段,来获取通道幅相补偿信息和信号到达角估计。通过计算机模拟实验,证明该方法是可行的。
The MUSIC method is employed to estimate the direction of arrival normally,but the calculation error level is significantly influenced due to the channel inconsistent.In this paper,one calibration method is reported,and the coupling between units,mounting error and mismatch are taken into account.An additional resource introduced,the DOA and the phase and amplify error are obtained using of optimization method.The computer calibration test shows that this method is valid.
出处
《空间电子技术》
2012年第2期37-39,69,共4页
Space Electronic Technology
