An approach to discriminate GNSS spoofing from multipath fading

A. Broumandan, A. Jafarnia-Jahromi, G. Lachapelle, R. Ioannides
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引用次数: 8

Abstract

GNSS signals are vulnerable to various types of interference including jamming and spoofing attacks. Spoofing signals are designed to deceive target GNSS receivers without being detected by conventional receiver quality monitoring metrics. This paper focuses on detecting an overlapped spoofing attack where the correlation peaks of the authentic and spoofing signals interact during the attack. Several spoofing detection and signal quality monitoring (SQM) metrics are introduced. This paper proposes a spoofing detection architecture utilizing combination of different metrics to detect spoofing signals and distinguish them from multipath signals. Experimental results show that the pre-despreading spoofing detection metrics such as variance analysis are not sensitive to multipath propagation and can be used in conjunction with post-despreading methods to correctly detect spoofing signals. Several test scenarios based on different spoofing and multipath cases are performed to demonstrate the effectiveness of the proposed architecture to correctly detect spoofing attack ands distinguish them from multipath.
一种GNSS欺骗与多径衰落的鉴别方法
GNSS信号容易受到各种干扰,包括干扰和欺骗攻击。欺骗信号旨在欺骗目标GNSS接收机,而不被传统的接收机质量监测指标检测到。本文研究了一种重叠欺骗攻击的检测方法,即在攻击过程中真实信号和欺骗信号的相关峰值相互作用。介绍了几种欺骗检测和信号质量监测(SQM)指标。本文提出了一种利用不同度量组合检测欺骗信号并将其与多径信号区分开来的欺骗检测体系结构。实验结果表明,方差分析等预扩欺骗检测指标对多径传播不敏感,可以与后扩方法结合使用,正确检测欺骗信号。针对不同的欺骗和多路径情况进行了测试,验证了该体系结构在正确检测欺骗攻击和区分欺骗攻击和多路径攻击方面的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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