| 虚拟孔径高分辨测角方法 |
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| 引用本文： | 徐彦钦,崔国龙,余显祥,葛萌萌,杨晓波.虚拟孔径高分辨测角方法[J].电子科技大学学报（自然科学版）,2022,51(1):45-51. |
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| 作者姓名： | 徐彦钦 崔国龙 余显祥 葛萌萌 杨晓波 |
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| 作者单位： | 电子科技大学信息与通信工程学院 成都 611731 |
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| 基金项目： | 国家自然科学基金(61771109,61871080,61701088)；;高等学校学科创新引智计划(B17008)； |
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| 摘 要： | 针对天线阵列中阵元个数有限而导致波达方向DOA估计分辨率较低的问题,该文提出了一种基于宽频跳变信号相位补偿的虚拟孔径重构方法.该方法通过利用宽频跳变信号,将多个频点的信号向量加入补偿相位形成虚拟导向矢量,从而形成远大于物理孔径的虚拟孔径,实现高分辨DOA估计.仿真实验结果表明,该文所提的虚拟阵列重构方法可有效地提高DO...
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| 关 键 词： | 天线阵列 宽频跳变信号 高分辨测角 虚拟孔径 |
| 收稿时间： | 2021-04-26 |
High Resolution Angle Measurement Method of Virtual Aperture |
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| XU Yanqin,CUI Guo-long,YU Xianxiang,GE Mengmeng,YANG Xiaobo.High Resolution Angle Measurement Method of Virtual Aperture[J].Journal of University of Electronic Science and Technology of China,2022,51(1):45-51. |
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| Authors: | XU Yanqin CUI Guo-long YU Xianxiang GE Mengmeng YANG Xiaobo |
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| Affiliation: | School of Information and Communication Engineering, University of Electronic Science and Technology of China Chengdu 611731 |
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| Abstract: | Considering the low angle resolution of direction of arrival (DOA) estimation caused by the limited number of elements in the antenna array, a virtual aperture reconstruction method is proposed in this paper, which is based on phase compensation of broadband hopping signals. Besides it, a virtual steering vector is constructed resorting to phase compensation on the signal vector at multiple frequency points of the broadband hopping signal. Finally, a virtual aperture much larger than the physical aperture is formed, which is capable of high-resolution DOA estimation. The simulation experiment results show that the virtual array reconstruction method in this paper can effectively improve the angle resolution of the DOA estimation with a small computational complexity. |
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