论文部分内容阅读
本文提出了一种适用于均匀圆阵的相干信源空间谱估计的方法。它利用空间预处理技术,将阵元空间的均匀圆阵变换成相位模式空间内的虚拟均匀线阵。通过将均匀线阵的空间平滑技术和增强平滑技术应用于该虚拟阵,可获得文中的模式平滑算法。该算法仅利用一维搜索就可使均匀圆阵具有检测相干信源的能力,避免了将圆阵看成是一般平面阵时所必须的多维搜索,减少了计算量。计算机模拟结果证明了该算法的正确性和有效性。
In this paper, a method of spatial spectrum estimation for coherent sources is proposed. It utilizes the space preprocessing technique to transform a uniform circular array of array element space into a virtual uniform linear array in phase pattern space. By applying a uniform linear array of spatial smoothing techniques and enhancement smoothing techniques to the virtual matrix, the pattern smoothing algorithm in the text can be obtained. The algorithm only makes use of one-dimensional search to make the uniform circular array have the capability of detecting coherent sources, and avoids the multidimensional search which is necessary when the circular array is regarded as a general planar array, thus reducing the computational cost. Computer simulation results show that the algorithm is correct and effective.