The vector tracking structure is receiving growing attention due to its better tracking performance than the traditional scalar tracking structure. For the scalar tracking structure, signal quality monitoring (SQM) methods can effectively detect spoofing attacks based on the influence of correlation peaks overlap on the coherent integration results. However, the methods are invalid when the overlap is inexistent. While for the vector tracking structure, the authors find that because of the combined tracking of all received signals, the coherent integration results are affected by spoofing attacks regardless of whether the overlap exists. It implies that SQM techniques have a wider application range for the vector tracking structure. To this end, an SQM-based spoofing detection method for the vector tracking structure is proposed in this study. Analysis and simulation results demonstrate that the proposed method is useful even in the spoofing scenarios where the correlation peaks do not overlap. And it can detect spoofing attacks on both pseudo-code and carrier Doppler by using the existing observations in the tracking process, which is highly practical for the vector tracking structure.

中文翻译：

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基于信号质量监测的全球导航卫星系统矢量跟踪结构欺骗检测方法

矢量跟踪结构由于其比传统标量跟踪结构更好的跟踪性能而受到越来越多的关注。对于标量跟踪结构，信号质量监视（SQM）方法可以根据相关峰重叠对相干积分结果的影响来有效检测欺骗攻击。但是，当不存在重叠时，这些方法将无效。对于矢量跟踪结构，作者发现由于对所有接收信号的组合跟踪，无论是否存在重叠，欺骗攻击都会影响相干积分结果。这意味着SQM技术在矢量跟踪结构中具有更广泛的应用范围。为此，本文提出了一种基于SQM的矢量跟踪结构欺骗检测方法。分析和仿真结果表明，即使在相关峰不重叠的欺骗场景中，该方法也是有用的。利用跟踪过程中已有的观测值，可以检测伪码和载波多普勒的欺骗攻击，对于矢量跟踪结构非常实用。