A new type cumulant-based virtual DOA matrix is formed using the property of aperture extension of fourth-order cumulants.
利用空间四阶累量的孔径扩展性质，构造了一种新的累量域虚拟阵列波达方向矩阵。
For the problem of parameter estimation of one dimensional and two dimensional chirp signal in additive colored Gaussian noise, a new method based on fourth-order cumulant is proposed.
针对加性高斯有色噪声背景下的一维、二维线性调频信号的参量估计问题，引入高阶统计量，提出了一种基于四阶累积量的新方法。
In array signal processing, the fourth-order cumulant can be applied to extend array virtually and enlarge aperture of array antenna, but computation load of algorithm would also increase.
在阵列信号处理中，利用四阶累积量可以使阵列虚拟扩展，增大了天线阵的孔径，但同时也增加了算法的计算量。
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