基于特征提取的智能天线波束校正问题研究

Research on Eigenvalue Abstraction-Based Updating Method for Smart Antenna Beam Forming

基于阵列相关矩阵的特征分解技术,提出了特征值门限提取的智能天线波束校正方法。特征分解得到特征值与对应特征矢量后,通过门限提取,摒弃部分小特征值,使特征谱结构保持良好的稳健性。仿真结果表明:该方法能够有效抑制信号对消,改善旁瓣电平性能,收敛速度优于传统方法,具有良好的波束校正能力。

For the purpose of beam shape remedy on smart antenna, a new beam form updating method is presented in this paper based on correlation matrix eigenstructure. After spectroscopic eigenvalue analysis, small eigenvalues under threshold are aborted to keep the robustness of eigenstructure spectrum. The computer simulation shows that, by using this method, the signal cancellation can be effectively inhibited and better beam shape with low sidelobe and fast convergence properties can be obtained.