| 引用本文: | 胡增辉,朱炬波,何峰,等.基于联合对角化的远场相干信号波达方向估计.[J].国防科技大学学报,2011,33(4):60-64.[点击复制] |
| HU Zenghui,ZHU Jubo,HE Feng,et al.Direction of Arrival Estimation of Far-field Coherent Signals Using Joint Diagonalization[J].Journal of National University of Defense Technology,2011,33(4):60-64[点击复制] |
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| 基于联合对角化的远场相干信号波达方向估计 |
| 胡增辉1, 朱炬波2, 何峰1, 梁甸农1 |
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(1.国防科技大学 电子科学与工程学院，湖南 长沙 410073;2.国防科技大学 理学院，湖南 长沙 410073)
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| 摘要: |
| 提出一种基于联合对角化的远场相干信号波达方向估计算法。利用阵元接收数据构造高阶累积量矩阵，通过矩阵联合对角化得到阵列广义流形矩阵的估计。利用阵列流形矩阵的矩阵特性及最小多项式的性质，消除联合对角化带来的顺序不确定性，得到波达方向的估计。该方法无需进行角度搜索，且能处理不同相干群内部分波达方向相同的情形。计算机仿真实验验证了算法的有效性。 |
| 关键词: 联合对角化 相干 波达方向 高阶累积量 |
| DOI： |
| 投稿日期：2010-09-27 |
| 基金项目:国家自然科学基金项目(60902092) |
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| Direction of Arrival Estimation of Far-field Coherent Signals Using Joint Diagonalization |
| HU Zenghui1, ZHU Jubo2, HE Feng1, LIANG Diannong1 |
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(1.College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;2.College of Science, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| A new algorithm for direction of arrival (DOA) of coherent signals using joint diagonalization was proposed. A set of higher-order cumulant matrices were first devised, the generalized array manifold matrix was then estimated using the technology of joint diagonalization. Finally, permutation uncertainty inherent in the estimation of the generalized array manifold matrix was eliminated and DOAs were estimated, based on the matrix structure of the array manifold matrix and properties of minimum polynomial of matrix. The proposed algorithm does not need angle searching, and can be applied to the cases when some DOAs in different coherent group are the same. The effectiveness of the proposed algorithm is verified by computer simulation results. |
| Keywords: joint diagonalization coherent direction of arrival high-order-cumulant |
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