Non-circular Coherent Signal DOA Estimation Based on Block Diagonal Spatial Smoothing Mechanism
文献类型：期刊论文
| 作者 | Dong, Xudong1; Zhang, Yongkui1; Qiu, Jibin2; Zhao, Jun3; Liu, Hao1; Luo, Jie1; Yang, Xu4; Lu, Yu1 |
| 刊名 | CIRCUITS SYSTEMS AND SIGNAL PROCESSING
 |
| 出版日期 | 2025-07-23 |
| 页码 | 21 |
| 关键词 | DOA estimation Coherent signal Non-circular phase Block diagonal spatial smoothing |
| ISSN号 | 0278-081X |
| DOI | 10.1007/s00034-025-03253-z |
| 英文摘要 | In coherent signal direction of arrival (DOA) estimation, traditional decoherence methods often suffer from limited performance because of array aperture shrinkage. While non-circular signals can enhance virtual aperture through covariance matrix expansion, their non-circular phase characteristics can disrupt conventional spatial smoothing algorithms. To address this issue, this paper proposes a novel block diagonal spatial smoothing (BSS) mechanism applied to the extended covariance matrix, which simultaneously enhances the effective array aperture while avoiding the interference of the non-circular phase on the smoothing process. Moreover, since the two-dimensional MUSIC space spectrum requires a two-dimensional search for non-circular phases and DOA, which increases the computational complexity of the subsequent DOA estimation, then the reduced dimensional MUSIC algorithm is employed. Finally, a detailed derivation of the Cramer-Rao bound for non-circular coherent signals is provided. Simulation results demonstrate that the BSS mechanism improves the performance of the classical and state-of-the-art spatial smoothing algorithms compared to circular coherent signals-based algorithms. |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001535089300001 |
| 出版者 | SPRINGER BIRKHAUSER |
| 源URL | [http://119.78.100.204/handle/2XEOYT63/42040]  |
| 专题 | 中国科学院计算技术研究所期刊论文_英文 |
| 通讯作者 | Zhao, Jun |
| 作者单位 | 1.Hangzhou Dianzi Univ, Coll Commun Engn, Hangzhou 310018, Peoples R China 2.Chinese Acad Sci, Inst Comp Technol, Beijing 100190, Peoples R China 3.China Jiliang Univ, Coll Informat Engn, Hangzhou 310018, Peoples R China 4.Nantong Univ, Sch Informat Sci & Technol, Nantong 226019, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dong, Xudong,Zhang, Yongkui,Qiu, Jibin,et al. Non-circular Coherent Signal DOA Estimation Based on Block Diagonal Spatial Smoothing Mechanism[J]. CIRCUITS SYSTEMS AND SIGNAL PROCESSING,2025:21. |
| APA | Dong, Xudong.,Zhang, Yongkui.,Qiu, Jibin.,Zhao, Jun.,Liu, Hao.,...&Lu, Yu.(2025).Non-circular Coherent Signal DOA Estimation Based on Block Diagonal Spatial Smoothing Mechanism.CIRCUITS SYSTEMS AND SIGNAL PROCESSING,21. |
| MLA | Dong, Xudong,et al."Non-circular Coherent Signal DOA Estimation Based on Block Diagonal Spatial Smoothing Mechanism".CIRCUITS SYSTEMS AND SIGNAL PROCESSING (2025):21. |
入库方式： OAI收割
来源：计算技术研究所
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