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Concepts, Development, and Validation of Multiantenna GNSS Receivers for Resilient Navigation

机译:用于弹性导航的多天线GNSS接收器的概念,开发和验证

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Array processing proved itself in the last decades as a powerful approach to suppress harmful radio frequency interference. However, the interference mitigation in the spatial domain can also lead to the attenuation and loss of the desired Global Navigation Satellite System (GNSS) signals that are not sufficiently separated by their directions of arrival from the interfering signals. In order to overcome this effect, this paper proposes an approach to combine array processing and vector tracking in a single receiver. Formerly, the vector tracking loops have been shown to deliver superior performance in scenarios with blocked line-of-sight signals due to aiding of the affected signals during the outage. Since vector tracking loops are susceptible to faked GNSS signals, the proposed receiver architecture also includes a spoofing detection based on the direction-of-arrival estimation. The paper presents the technical concept and details about the realization of the array-based receiver that was developed at the German Aerospace Center (DLR). The techniques used to mitigate brute-force radio frequency interference and to detect spoofing signals are described. Experimental results obtained with these techniques in field are discussed.
机译:在过去的几十年中,阵列处理证明了自己是抑制有害射频干扰的有效方法。然而,在空间域中的干扰减轻还可以导致期望的全球导航卫星系统(GNSS)信号的衰减和损失,该期望的全球导航卫星系统(GNSS)信号的到达方向与干扰信号没有充分分开。为了克服这种影响,本文提出了一种在单个接收器中结合阵列处理和矢量跟踪的方法。以前,由于在停电期间对受影响的信号提供了帮助,因此矢量跟踪环已显示出在视线信号被阻塞的情况下提供了出色的性能。由于矢量跟踪环路容易受到伪造的GNSS信号的影响,因此所提出的接收器体系结构还包括基于到达方向估计的欺骗检测。本文介绍了在德国航空航天中心(DLR)开发的基于阵列的接收机实现的技术概念和细节。描述了用于减轻强力射频干扰和检测欺骗信号的技术。讨论了使用这些技术在现场获得的实验结果。

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