| 机载电磁矢量传感器阵列DOA和极化参数估计 |
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| 引用本文： | 崔伟,陶建武,刘亮.机载电磁矢量传感器阵列DOA和极化参数估计[J].系统工程与电子技术,2008,30(2):222-225. |
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| 作者姓名： | 崔伟 陶建武 刘亮 |
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| 作者单位： | 空军航空大学,吉林,长春,130022 |
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| 摘 要： | 针对机载电磁矢量传感器阵列DOA和极化参数估计问题,提出了一种基于复四元数估计方法,该算法利用四元数建立机载电磁矢量传感器阵列信号处理模型,然后利用四元数联合矩阵的特征分解得到阵列数据相关矩阵的特征分解,一方面使得计算过程中数据的贮存量大大减少,另一方面通过推导得到信号子空间和噪声子空间在四元数域上的正交性从而使DOA和极化参数估计的精度更高,仿真证实了本算法的有效性。
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| 关 键 词： | DOA 极化参数估计 电磁矢量传感器阵列 四元数 特征分解 |
| 文章编号： | 1001-506X(2008)02-0222-04 |
| 修稿时间： | 2007年1月23日 |
Novel DOA and polarization estimation of electromagnetic vector sensor mounted on the airframe |
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| CUI Wei,TAO Jian-wu,LIU Liang.Novel DOA and polarization estimation of electromagnetic vector sensor mounted on the airframe[J].System Engineering and Electronics,2008,30(2):222-225. |
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| Authors: | CUI Wei TAO Jian-wu LIU Liang |
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| Abstract: | A novel direction of arrival(DOA) and polarization estimation of electromagnetic vector sensors mounted on the airframe is proposed based on biquaternion. The signal processing model for EM-sensor mounted on the airframe is made by biquaternion and then the eigenvalue decomposition(EVD)of spectral matrix is obtained by means of the EVD of its quaternion adjoint matrix.The memory requirement for data is reduced,and more accurate estimation result is gotten by deducing the stronger orthogonality constraint between the singal and noise subspaces on the field of biquaternion.The performance of the new algorithm is confirmed through numerical examples. |
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| Keywords: | DOA polarization estimation electromagnetic-sensor array quaternion eigenvalue decomposition |
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