Abstract:Based on fourth-order cumulant, this paper presents a new method, i.e. CTSS algorithm, for joint estimation of frequency and 2-D arrival angles of coherent signals. Firstly a time-space smoothing matrix is constructed by temporal and spatial data of two parallel uniform linear arrays and the smoothing technique, and then 3-D parameters of coherent signals can be obtained from its eigenvalues and the corresponding eigenvectors. In Gaussian colored noise, the algorithm can precisely estimate 3-D parameters of coherent signals, and does not need multidimensional spectrum peak search with 3-D parameters paired automatically. In addition, it can still estimate correctly 3-D parameters of signals when signals have the same one or two dimensional parameters. Computer simulation confirms its effectiveness.
杜 刚; 张永顺; 王永良; 姜新迎. 基于四阶累积量的相干信号频率和二维到达角联合估计的新算法[J]. 电子与信息学报, 2009, 31(2): 327-330 .
Du Gang①②; Zhang Yong-shun①; Wang Yong-liang②; Jiang Xin-ying①. A New Method for Joint Estimation of Frequency and 2-D Arrival Angles of Coherent Signals Based on Fourth-Order Cumulant. , 2009, 31(2): 327-330 .