中南大学学报（自然科学版）Issue(1)：130-135,6.DOI:10.11817/j.issn.1672-7207.2016.01.019
利用极化敏感阵列特性的信源数估计技术研究
A source number estimation method using polarization sensitive array characteristic
摘要
Abstract
Considering the source number estimation problem of multi-parameter joint estimation based on polarization sensitive array, a new source number estimation algorithm was presented based on feature eliminated process. Firstly, the method performed eigenvalue decomposition (EVD) on the covariance matrix of data vector which received by polarization sensitive array, the number of eigenvalues which was obtained was twice as much as the array element number, and then the eigenvalues were made in descending order, where the subspace spanned by the eigenvectors corresponded to the last half eigenvalues was included in the noise subspace, and this feature was used to construct a projection matrix. Secondly, new covariance matrixes were reconstructed by feature eliminated process, then calculate the projection of the new covariance matrixes on the projection matrix. Finally, the number of source was estimated according to the criterion function constructed by the projection results. The results show that the angle interval and polarization angle interval effect the performance of the proposed algorithm. The proposed algorithm is more effective than the common GDE method.关键词
极化敏感阵列/去特征处理/投影矩阵/信源数估计Key words
polarization sensitive array/feature eliminated process/projection matrix/source number estimation分类
信息技术与安全科学引用本文复制引用
吴娜,司伟建,焦淑红,吴迪..利用极化敏感阵列特性的信源数估计技术研究[J].中南大学学报（自然科学版）,2016,(1):130-135,6.基金项目
中央高校基本科研业务费资助项目(HEUCF130804)(Project(HEUCF130804) supported by the Fundamental Research Fund for the Central Universities) （HEUCF130804）
