| 基于Toeplitz矩阵的酉变换波达角估计算法 |
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| 引用本文： | 韩勇,乔晓林,金铭,曹丙霞.基于Toeplitz矩阵的酉变换波达角估计算法[J].数据采集与处理,2011,26(1). |
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| 作者姓名： | 韩勇 乔晓林 金铭 曹丙霞 |
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| 作者单位： | 哈尔滨工业大学信息工程研究所,哈尔滨,150001 |
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| 基金项目： | 哈尔滨工业大学(威海)校科学研究基金(HIT(WH)XBQD201022)资助项目 |
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| 摘 要： | 为提高Toeplitz矩阵重构算法的估计性能、降低计算量,提出了基于Toeplitz矩阵的酉变换DOA估计算法UHT-MUSIC。该算法在保持估计性能不变的前提下,先将Toeplitz型协方差矩阵变换为Hermition矩阵,然后利用酉变换将其转换为实数矩阵。在此基础上利用MUSIC算法进行DOA估计,其特征值分解及谱峰搜索的计算量降低到同条件下TOEP-MUSIC算法的1/4。同时该算法还有效降低了信源的相关系数,从而提高了算法的分辨性能。仿真实验验证了该算法的正确性。
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| 关 键 词： | 波达角估计 酉变换 Toeplitz矩阵 相干信源 |
Unitary Transformation DOA Algorithm Based on Toeplitz Matrix |
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| Han Yong,Qiao Xiaolin,Jin Ming,Cao Bingxia.Unitary Transformation DOA Algorithm Based on Toeplitz Matrix[J].Journal of Data Acquisition & Processing,2011,26(1). |
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| Authors: | Han Yong Qiao Xiaolin Jin Ming Cao Bingxia |
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| Affiliation: | Han Yong,Qiao Xiaolin,Jin Ming,Cao Bingxia(Institute of Information Engineering,Harbin Institute of Technology,Haerbin,150001,China) |
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| Abstract: | To improve estimation performance and decrease calculation capacity of TOEP-MUSIC algorithm,a DOA estimation algorithm based on Toeplitz matrix unitary transformation(UHT-MUSIC) is proposed.In UHT-MUSIC algorithm,Toeplitz covariance matrix is constructed and transformed into Hermition matrix with remaining the estimation performance unchanged,and then changed into a real matrix by unitary transformation.DOA estimation is operated by MUSIC algorithm based on the real covariance matrix,so that the calculation... |
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| Keywords: | estimation direction of arrival unitary transformation Toeplitz matrix coherent sources |
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