摘要
针对自适应阵列信号处理中的关键问题之一波达方向(DOA)估计,首先介绍了阵列信号处理中DOA估计的一般处理方法,如先对信号进行解相干处理后用经典MUSIC算法进行估计,然后给出了一种用于相干信号DOA估计的基于扩展卡尔曼滤波理论的新方法,并通过详细理论分析与一般的相干信号DOA估计的处理方法比较表明,不依赖于输入信号的协方差矩阵的特征值属性,能够利用较少的阵元对相干信号DOA和功率同时进行准确估计,仿真效果良好,证明有实用性,对自适应阵列信号处理中对相干信号干扰的研究有一定意义。
According to the Directions Of Arrival （DOA） estimation in adaptive array signal processing ,which is one of the pivotal problems, this paper first introduces the traditional method such as using MUSIC arithmetic after solving the coherence problem, then gives a new method for coherent signal in DOA estimation based on extended Kalman filter. Through analyzing the theory and comparing with the traditional methods, it indicates that the method doesn＇t depend on the property of covariance matrix of input signal, and can get the estimation of DOA and power well and truly, and the method achieves a good simulation effect. The method is practical and suitable for researching the interference of coherent signal.
出处
《计算机仿真》
CSCD
北大核心
2009年第8期291-294,共4页
Computer Simulation
