摘要
本文首先采用空间平滑技术消除有用的GPS信号与相干干扰信号之间的相关性,然后构造干扰转换矩阵,从而抑制干扰信号,保留有用信号和噪声。最后根据最大输出信噪比原则,获得最佳波束形成器。仿真分析表明该方法可以有效提高输出信号的信号干扰加噪声比,且对信号的DOA估计不敏感。
Coherence between signal and interference is firsdy removed by spatial smoothing techniques, and then an interference transformation matrix is constructed for suppressing interference signals, while the desired signals and noise are retained. Optimum beamforming is performed based on the matrix transformation data consisting of the desired signals and noise to produce maximum output signal - to - interferenceplus -noise ratio （SINR）. Numerical results demonstrate the proposed method can effectively improve output SINR and is insensitive to DOA estimation of the signals.
出处
《电讯技术》
2005年第6期132-135,共4页
Telecommunication Engineering
关键词
GPS
相干干扰
干扰转换矩阵
空间平滑技术
Global positioning system （ GPS ）
Coherent interference
Interference transformation matrix
Spatial smoothing technique
