一种基于增益的电磁涡流雷达低秩修正成像方法

IF 0.8 4区 工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC
Linrui Fu, Yunxiu Yang, Chang Wang, Qin Shu
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引用次数: 0

摘要

本文解决了电磁涡流雷达成像在分辨率和先验知识方面的挑战,提出了一种在距离和方位角维度上创新的高分辨率成像算法。传统的成像方法,如快速傅里叶变换(FFT)和空间谱估计,受到成像质量和子空间维数精确估计要求的制约。为了解决这些问题,本研究提出了一种将增益调制与低秩修正多信号分类(MUSIC)理论相结合的新型二维成像方法。该方法采用单秩特征分解,消除了对先验信息的依赖,同时优化了计算复杂度。适当的增益调制进一步提高了多目标成像能力。与FFT和稀疏成像技术相比,仿真结果和定量分析验证了该方法在复杂目标场景下的优越分辨率和鲁棒性,推进了EM涡旋雷达在目标观测中的应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

A Low-Rank Modified Imaging Method Based on Gain for Electromagnetic Vortex Radar

A Low-Rank Modified Imaging Method Based on Gain for Electromagnetic Vortex Radar

A Low-Rank Modified Imaging Method Based on Gain for Electromagnetic Vortex Radar

A Low-Rank Modified Imaging Method Based on Gain for Electromagnetic Vortex Radar

A Low-Rank Modified Imaging Method Based on Gain for Electromagnetic Vortex Radar

This letter addresses the challenges of electromagnetic (EM) vortex radar imaging related to resolution and prior knowledge, proposing an innovative high-resolution imaging algorithm in range and azimuth dimensions. Traditional imaging methods, such as the fast Fourier transform (FFT) and spatial spectrum estimation, are hindered by the imaging quality and the requirement for precise estimation of subspace dimension. To address these, this study proposes a novel 2-dimensional imaging method integrating gain modulation with low-rank modified multiple signal classification (MUSIC) theory. By employing single-rank eigen decomposition, the proposed method eliminates dependence on prior information while optimising computational complexity. The proper gain modulation further enhances the multi-target imaging capabilities. In contrast to FFT and sparse imaging techniques, simulation results and quantitative analyses validated the superior resolution and robustness of the method in complex target scenarios, advancing the EM vortex radar for target observation applications.

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来源期刊
Electronics Letters
Electronics Letters 工程技术-工程:电子与电气
CiteScore
2.70
自引率
0.00%
发文量
268
审稿时长
3.6 months
期刊介绍: Electronics Letters is an internationally renowned peer-reviewed rapid-communication journal that publishes short original research papers every two weeks. Its broad and interdisciplinary scope covers the latest developments in all electronic engineering related fields including communication, biomedical, optical and device technologies. Electronics Letters also provides further insight into some of the latest developments through special features and interviews. Scope As a journal at the forefront of its field, Electronics Letters publishes papers covering all themes of electronic and electrical engineering. The major themes of the journal are listed below. Antennas and Propagation Biomedical and Bioinspired Technologies, Signal Processing and Applications Control Engineering Electromagnetism: Theory, Materials and Devices Electronic Circuits and Systems Image, Video and Vision Processing and Applications Information, Computing and Communications Instrumentation and Measurement Microwave Technology Optical Communications Photonics and Opto-Electronics Power Electronics, Energy and Sustainability Radar, Sonar and Navigation Semiconductor Technology Signal Processing MIMO
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