| 基于四阶累积量的二维波达方向估计改进算法 |
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| 引用本文： | 王鼎,龚辉,吴瑛. 基于四阶累积量的二维波达方向估计改进算法[J]. 数据采集与处理, 2007, 22(3): 342-346 |
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| 作者姓名： | 王鼎 龚辉 吴瑛 |
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| 作者单位： | 解放军信息工程大学信息工程学院,郑州,450002;国营713厂设计所,九江,332005 |
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| 摘 要： | 利用四阶累积量的阵列扩展特性，将一排直线阵列和一个独立阵元扩展成一个特殊的虚拟双排直线阵列，它由三个子直线阵列构成，并且可计算出每个子直线阵列等效的协方差矩阵，然后结合传播算子方法，提出一种改进的二维波达方向估计算法。计算机仿真验证了该算法具有抗噪能力强、数值稳定性好等优点。
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| 关 键 词： | 波达方向估计 四阶累积量 阵列扩展 算法 |
| 文章编号： | 1004-9037（2007）03-0342-05 |
| 收稿时间： | 2006-03-03 |
| 修稿时间： | 2006-11-06 |
Improved Algorithm for 2-D DOA Estimation Based on Fourth-Order Cumulants |
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| Wang Ding,Gong Hui,Wu Ying. Improved Algorithm for 2-D DOA Estimation Based on Fourth-Order Cumulants[J]. Journal of Data Acquisition & Processing, 2007, 22(3): 342-346 |
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| Authors: | Wang Ding Gong Hui Wu Ying |
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| Affiliation: | 1. Institute of Information Engineering, Information Engineering University, Zhengzhou, 450002, China 2. Design Institute, No. 713 National Factory, Jiujiang, 332005, China |
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| Abstract: | One kind of special two rows of linear arrays can be extended by one row of linear arrays and an independent array by using the property of aperture extension of fourth-order cumulants. The virtual array includes three subarrays. The equivalent covariance matrix of each subarray can be computed and an improved 2-D DOA estimation algorithm is developed based on the propagator method. Simulations show that the algorithm is insensitive to additive noise and has high robustness. |
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| Keywords: | DOA estimation fourth-order cumulants array extension algorithm |
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