| 王绪虎,孙高利,金 序,侯玉君,王辛杰,陈建军.平行线阵扩展协方差矩阵二维波达方向估计方法*[J].,2025,44(1):162-169 |
| 平行线阵扩展协方差矩阵二维波达方向估计方法* |
| Two dimensional direction of arrival estimation method based on extended covariance matrix of parallel linear arrays |
| 投稿时间：2023-09-16 修订日期：2024-12-30 |
| 中文摘要: |
| 为提升水听器阵列二维波达方向(DOA)估计的性能，降低计算复杂度，提出一种基于双平行线阵的扩展协方差矩阵DOA估计方法。该方法以平行水听器阵列接收数据为基础，构造扩展的协方差矩阵，利用线性阵列间的平行属性对扩展矩阵的信号子空间进行分块和重组，同时筛选对应的阵列流形矩阵，然后利用旋转不变技术的信号参数估计(ESPRIT)方法估计入射信号的方位角和俯仰角。该方法充分利用了双平行线阵的自相关和互相关信息，提升了二维DOA估计的性能，且无需谱峰搜索则可得到估计值，降低了计算的复杂性，节约了计算成本。仿真实验和湖上试验结果证实了该文方法的有效性和稳健性。 |
| 英文摘要: |
| In order to improve the performance of two-dimensional (2-D) direction of arrival (DOA) estimation and reduce the computational complexity, a DOA estimation method based on extended covariance matrix of parallel linear arrays is proposed. An extended covariance matrix is constructed based on the data received by parallel hydrophone arrays, and feature decomposition is performed on the extended covariance matrix to obtain its signal subspace. Then, the signal subspace is partitioned and reorganized by using the parallel characteristics of the parallel linear arrays and the corresponding array manifold matrix is selected. Finally, the azimuth and elevation are estimated by using estimation signal parameters via rotational invariance techniques (ESPRIT). The auto correlation and cross correlation information of subarray 1 and subarray 2 are fully utilized to improve the accuracy of two-dimensional DOA estimation, and the computational complexity is effectively reduced. Moreover, this method does not require spectrum peak search. Simulation experiments and lake trials confirm the robustness and effectiveness of the proposed method. |
| DOI：10.11684/j.issn.1000-310X.2025.01.017 |
| 中文关键词: 双平行线阵 二维波达方向估计 扩展协方差矩阵 旋转不变技术的信号参数估计 |
| 英文关键词: Parallel linear arrays 2-D direction of arrival estimation Extended covariance matrix Estimation signal parameters via rotational invariance techniques |
| 基金项目:国家自然科学基金项目(62171247) ：山东省自然科学基金项目(ZR2020MF001；ZR2022MF273) |
|
| 摘要点击次数: 4 |
| 全文下载次数: 2 |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
