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首页> 外文期刊>The Journal of Navigation >GNSS Jamming Resilience for Close to Shore Navigation in the Northern Sea
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GNSS Jamming Resilience for Close to Shore Navigation in the Northern Sea

机译：GNSS的抗干扰能力可在北海中实现近岸航行

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摘要

Navigational error accounts for half of the accidents and serious incidents in close to shore maritime transport in Norway predominantly due to the rapidly changing weather conditions and the dangerous nature of the narrow inshore waters found along the Norwegian coast. This creates a dependence on Differential Global Positioning System (DGPS) use and any disruption to this service can lead to an increased accident rate. The aim of this paper is to research the jamming vulnerability of existing maritime receivers and to understand if an upgrade to a multi-constellation or multi-frequency receiver would improve system resilience. The novelty of this work is a comparison of jamming resilience between different combinations of multiple constellations (GPS and Globalnaya Navigatsionnaya Sputnikovaya Sistema (GLONASS)) and multi-frequency Global Navigation Satellite System (GNSS) signals. This paper presents results from GNSS jamming trials conducted in the northern part of Norway, confirming previous research and indicating that typical maritime GPS receivers are easy to jam and may produce erroneous positional information. Results demonstrate that the single frequency multi-constellation receivers offer better jamming resilience than multi- frequency (L1 + L2) GPS receivers. Further, the GLONASS constellation demonstrated a better resilience than GPS. Results demonstrate a known correlation between GPS L1 and L2 frequencies, as well as a probable over-dependence on GPS for signal acquisition, meaning that no signal can be received without GPS L1 present. With these limitations in mind, the authors suggest that the most economic update to the single frequency GPS receivers, currently used for maritime applications, should be multi- constellation GPS + GLONASS receivers. This solution is cheaper and it also offer better jamming resistance for close to shore navigation than dual frequency receivers.
机译：在挪威近海海上运输中，航行错误占事故和严重事故的一半，主要是由于天气条件迅速变化以及在挪威沿海发现的狭窄近岸水域的危险性所致。这将依赖于差分全球定位系统（DGPS）的使用，对此服务的任何干扰都可能导致事故率增加。本文的目的是研究现有海上接收器的干扰脆弱性，并了解升级到多星座或多频率接收器是否会提高系统弹性。这项工作的新颖之处在于比较了多个星座（GPS和Globalnaya Navigatsionnaya Sputnikovaya Sistema（GLONASS））和多频全球导航卫星系统（GNSS）信号的不同组合之间的抗干扰能力。本文介绍了在挪威北部进行的GNSS干扰试验的结果，证实了先前的研究，并表明典型的海上GPS接收器容易受干扰，并可能产生错误的位置信息。结果表明，单频多星座接收机比多频（L1 + L2）GPS接收机具有更好的抗干扰能力。此外，GLONASS星座图显示出比GPS更好的弹性。结果表明，GPS L1和L2频率之间存在已知的相关性，并且可能过度依赖GPS进行信号采集，这意味着如果没有GPS L1，则无法接收任何信号。考虑到这些限制，作者建议，当前用于海上应用的单频GPS接收机最经济的更新应该是多星座GPS + GLONASS接收机。与双频接收器相比，该解决方案更便宜，并且还为近岸航行提供了更好的抗干扰能力。

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