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本文分析了在高阶统计应用阵来波方向估计问题中二阶子空间与四阶子空间的概念及形式关系。提出了基于四阶累积量的最小范数方法。提出了四阶累积量方法对于均匀直线阵的零谱求很方法。最后给出了模拟实验举例。
This paper analyzes the concepts and formal relations of second-order subspaces and fourth-order subspaces in the problem of high-order statistical application of array arrival wave. A fourth-order cumulant-based least-norm method is proposed. The fourth-order cumulant method is proposed for the zero spectrum of uniform linear array. Finally, an example of simulation experiment is given.