相同频率电磁辐射源的分离方法

IF 1.6 3区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Journal of electromagnetic engineering and science Pub Date : 2023-11-30 DOI:10.26866/jees.2023.6.r.197
Yingchun Xiao, Yang Yang, Feng Zhu
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引用次数: 0

摘要

为了分离未知源数的电磁干扰源,提出了一种新的分离方法,包括五个关键步骤:空间频谱估计、源数和到达方向估计、混合矩阵估计、分离矩阵估计和源信号恢复。提出了一种基于卷积神经网络的伪空间频谱估计网络,用于估计电磁辐射源的数量、到达方向和混合矩阵。设计了一种新的损失函数,作为估计分离矩阵的优化准则。为确保通用性,模拟数据集和测量数据集都被用来训练所提出的网络。实验结果表明,所提出的分离方法在相关系数、均方根误差和运行时间方面都优于现有的源分离技术。重要的是,它在未确定的情况下,以及在过度确定或确定的情况下,都表现出很强的性能。
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A Separation Method for Electromagnetic Radiation Sources of the Same Frequency
To separate electromagnetic interference sources with an unknown source number, a new separation method is proposed, which includes five key steps: spatial spectrum estimation, source number and direction-of-arrival estimation, mixed matrix estimation, separation matrix estimation, and source signal recovery. A pseudospatial spectrum estimation network based on a convolutional neural network is proposed to estimate the number of electromagnetic radiation sources, their direction of arrival, and the mixing matrix. A new loss function is designed as an optimization criterion for estimating the separation matrix. To ensure generalization, both simulated and measured datasets are used to train the proposed network. Experimental results demonstrate that the proposed separation method outperforms existing source separation techniques in terms of correlation coefficient, root mean square error, and running time. Importantly, it exhibits strong performance in underdetermined cases, as well as in overdetermined or determined cases.
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来源期刊
Journal of electromagnetic engineering and science
Journal of electromagnetic engineering and science ENGINEERING, ELECTRICAL & ELECTRONIC-
CiteScore
2.90
自引率
17.40%
发文量
82
审稿时长
10 weeks
期刊介绍: The Journal of Electromagnetic Engineering and Science (JEES) is an official English-language journal of the Korean Institute of Electromagnetic and Science (KIEES). This journal was launched in 2001 and has been published quarterly since 2003. It is currently registered with the National Research Foundation of Korea and also indexed in Scopus, CrossRef and EBSCO, DOI/Crossref, Google Scholar and Web of Science Core Collection as Emerging Sources Citation Index(ESCI) Journal. The objective of JEES is to publish academic as well as industrial research results and discoveries in electromagnetic engineering and science. The particular scope of the journal includes electromagnetic field theory and its applications: High frequency components, circuits, and systems, Antennas, smart phones, and radars, Electromagnetic wave environments, Relevant industrial developments.
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