基于阵列天线信号处理的防欺骗技术

卢建军; 彭新智; 封帆; 黄楚涵; 袁雪林; 朱祥维

doi:10.12265/j.gnss.2024019

基于阵列天线信号处理的防欺骗技术

doi: 10.12265/j.gnss.2024019

中山大学电子与通信工程学院, 广东深圳 518107

详细信息

作者简介:
卢建军：(2001—) 男，博士研究生，研究方向为智能可信导航技术. E-mail: lujj29@mail2.sysu.edu.cn

彭新智：(1996—) 男，博士研究生，研究方向为阵列天线导航抗干扰技术. E-mail: pengxzh9@mail2.sysu.edu.cn

封帆：(1996—) 男，博士研究生，研究方向为卫星导航信号处理和防欺骗技术. E-mail: fengf37@mail2.sysu.edu.cn

通信作者:
朱祥维 E-mail: zhuxw666@mail.sysu.edu.cn

中图分类号: P228.4；TN911.7；TN967.1
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- 被引次数: 0
出版历程
- 收稿日期: 2024-01-30
- 网络出版日期: 2024-07-08

Anti-spoofing technology based on array antenna signal processing

School of Electronics and Information Technology, Sun Yat-Sen University, Shenzhen 518107, China

摘要

摘要: GNSS在国家基础设施以及生命安全应用中扮演重要角色，但日益增长的欺骗干扰事件给GNSS带来了巨大威胁. 本文介绍了基于阵列天线信号处理的防欺骗技术，根据阵列构型的不同，从均匀阵列和稀疏阵列两个方面总结了欺骗干扰检测与欺骗干扰抑制方法. 其中稀疏阵列相较均匀阵列，在相同天线阵元数的情况下，拥有更大的阵列孔径及自由度，极大地降低了设备成本，但其对相干信号处理技术要求更高. 最后本文给出了防欺骗干扰技术面临的难题以及其未来的发展趋势.
- 欺骗干扰 /
- 稀疏阵列 /
- 波达方向估计 /
- 子空间投影 /
- 波束成形
Abstract: Global navigation satellite systems play an important role in national infrastructure as well as life safety applications, but the increasing spoofing incidents pose a great threat to GNSS. This paper introduces the anti-spoofing technology based on array antenna signal processing, and summarizes the spoofing interference detection and spoofing interference suppression methods from both uniform and sparse arrays according to the different array configurations. Compared with uniform array, sparse array has larger array aperture and degree of freedom under the same number of antenna elements, which greatly reduces the cost of equipment, but its coherent signal processing technology requires more. Finally, this paper gives the difficulties faced by the anti-spoofing interference technology and its future development trend.
- spoofing /
- sparse array /
- direction of arrival estimation /
- subspace projection /
- beamforming

HTML全文

图 1 阵列天线接收模型

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图 2 互质阵列结构

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图 3 嵌套线阵结构

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图 4 空间平滑原理

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表 1 GNSS防欺骗技术

项目	信息层	信号层
项目	信息层	单天线	阵列天线	辅助传感器
检测	伪距、伪距残差、多普勒-钟飘双差等	CNR、载波相位、相关峰、矢量接收机等	信号强度、 DOA等	IMU、高度计等
抑制	信号加密认证	MLE、AGC等	功率倒置、波束形成、子空间投影、空时自适应处理等	-

下载: 导出CSV

表 2 互质阵列构型

子阵	阵元数	阵元间距
1	$2{M_1}$	${M_2}d$
2	${M_2}$	${M_1}d$

下载: 导出CSV

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