| 一种改进的二维ESPRIT算法 |
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| 引用本文： | 刁鸣,魏挺.一种改进的二维ESPRIT算法[J].山东大学学报(工学版),2010,40(2):149-152. |
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| 作者姓名： | 刁鸣 魏挺 |
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| 作者单位： | 哈尔滨工程大学信息与通信工程学院, 黑龙江 哈尔滨 150001 |
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| 基金项目： | 黑龙江省科技攻关项目 |
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| 摘 要： | 针对二维旋转不变子空间算法(estimation of signal parameters via rotational invariance technigues,ESPRIT)在求解信号时协方差矩阵存在阵列冗余问题,提出一种改进后的二维ESPRIT算法。该算法利用阵列结构原理构造2个互相关矩阵,然后由合并的特殊大矩阵进行奇异值分解来估计信号子空间,最后利用2D-ESPRIT方法实现二维测向。该算法估计精度高,计算量小,通过空间平滑后既能对相干信号进行估计,也能同时估计非相干信号。
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| 关 键 词： | 波达方向估计 二维ESPRIT 奇异值分解 相干信号 |
| 收稿时间： | 2009-05-31 |
An improved 2-D ESPRIT algorithm |
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| DIAO Ming,WEI Ting.An improved 2-D ESPRIT algorithm[J].Journal of Shandong University of Technology,2010,40(2):149-152. |
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| Authors: | DIAO Ming WEI Ting |
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| Affiliation: | Information and Communication Engineering College, Harbin Engineering Universiuy, Harbin 150001, China |
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| Abstract: | When the 2-D ESPRIT algorithm is used to treat two-dimensional signals, there is a great deal of redundancy in the arrays. A new 2-D improved ESPRIT algorithm was proposed. This algorithm used the geometries characteristic of a double linear array to construct a mixed matix, and then the signal subspace was obtained via the singular value decomposition of the matix in the 2D-ESPRIT method. This method could estimate the signal with less work, and get good estimation results. It could estimate both coherent signals and non-coherent signals by the spatial smoothing method. |
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| Keywords: | direction of arrival estimation 2-D ESPRIT singular value decomposition coherent signal |
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