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

杜刚; 张永顺; 王永良; 姜新迎

doi:10.3724/SP.J.1146.2007.01299

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

doi: 10.3724/SP.J.1146.2007.01299

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出版历程
- 收稿日期: 2007-08-09
- 修回日期: 2008-04-15
- 刊出日期: 2009-02-19

A New Method for Joint Estimation of Frequency and 2-D Arrival Angles of Coherent Signals Based on Fourth-Order Cumulant

摘要

摘要: 该文提出了一种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CTSS算法。CTSS算法利用双平行线阵的时空数据以及平滑技术构造了一个时空平滑矩阵，通过对其进行特征分解，并利用分解得到的特征值和特征矢量估计出空间相干信号的三维参数。在色噪声环境下，该算法能够精确地估计空间相干信号的三维参数，无需多维谱峰搜索，能实现信号三维参数的自动配对，并有效地解决了信源参数兼并问题。计算机仿真结果验证了算法的有效性。
- 信号处理;四阶累积量;相干源;三维参数估计;平滑技术
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.

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王建英, 陈天麒. 频率、二维到达角和极化联合估计. 电子学报, 1999, 27(11): 74-83.Wang Jian-ying and Chen Tian-qi. Joint frequency,two-dimensional arrival angles and the polarizationsestimation using an L array. Acta Electronica Sinica, 1999,27(11): 74-83.[2]程伟, 左继章. 基于时空结构的阵列信号三维参数同时估计方法. 通信学报, 2004, 25(10): 67-74.Cheng Wei and Zuo Ji-zhang. A new method forsimultaneous estimation of 3-D parameters of array signalbased on time-space structure. Journal on Communications,2004, 25(10): 67-74.[3]黄佑勇, 王激扬, 陈天麒. 任意结构阵列基于高阶累积量的信号频率和二维角联合估计算法.系统工程与电子技术, 2001,23(6): 32-39.Huang You-yong, Wang Ji-yang, and Chen Tian-qi. A newcumulants-based algorithm with arbitrary geometry array forthe estimation of frequencies and 2D-DOAs of spatial signals.Systems Engineering and Electronics, 2001, 23(6): 32-39.[4]王兰美, 王洪洋, 廖桂生. 基于四阶累积量的多参数联合估计算法. 西安电子科技大学学报, 2005, 32(3): 374-377.Wang Lan-mei, Wang Hong-yang, and Liao Gui-sheng. Newmethod for joint estimation of array parameters based onforth-order cumulants. Journal of Xdian University, 2005,32(3): 374-377.[5]Gonen E and Mendel J M. Applications of cumulants to arrayprocessing-part IV: Direction finding in coherent signals case[J].IEEE Trans. on Signal Processing.1997, 45(9):2265-2275[6]齐崇英, 王永良, 张永顺. 色噪声背景下相干信源DOA 估计的空间差分平滑算法. 电子学报, 2005, 33(7): 1314-1318.Qi Chong-ying, Wang Yong-liang, and Zhang Yong-shun.Spatial difference smoothing algorithm for DOA estimationof coherent sources in the presence of colored noise fields.Acta Electronica Sinica, 2005, 33(7): 1314-1318.[7]王鼎, 吴瑛. 一种基于四阶累积量的相干信号测向算法.系统工程与电子技术, 2006, 28(5): 665-669.Wang Ding and Wu Ying. A DOA estimation algorithm forcoherent signals based on the fourth-order cumulant. SystemsEngineering and Electronics, 2006, 28(5): 665-669.[8]Shan T J, Wax M, and Kailath T. On spatial smoothing fordirection-of-arrival estimation of coherent signals[J].IEEETrans. on Acoustics, Speech, and Signal Processing.1985,33(4):806-811[9]殷勤业, 邹理和, Newcomb R W. 一种高分辨率二维信号参数估计方法－波达方向矩阵法. 通信学报, 1991, 12(4): 1-7.Yin Qin-ye, Zou Li-he, and Newcomb R W. A high resolutionapproach to 2-D signal parameter estimation -DOA matrixmethod. Journal on Communications, 1991, 12(4): 1-7.

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