GNSS interference monitoring and detection based on the Swedish CORS network SWEPOS

IF 0.9 Q4 REMOTE SENSING
K. Abraha, Anders Frisk, Peter Wiklund
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引用次数: 0

Abstract

The presence of Global Navigation Satellite System (GNSS) interference poses a significant risk to both GNSS and the infrastructures that depend on them. This article describes how an existing GNSS infrastructure, the Swedish Continuously Operating Reference Stations network SWEPOS with more than 500 stations, can be leveraged to control the quality of GNSS signals and to be able to detect interferences in GNSS and adjacent frequency bands. This study introduces a SWEPOS-based automatic system that effectively detects GNSS interference by examining the signal-to-noise ratio (SNR) of Global Positioning System, Globalnaya Navigatsionnaya Sputnikovaya Sistema, Galileo, and BeiDou frequency bands. By comparing the SNR of tracked satellites against historical data, the system detects radio frequency interference (RFI) by statistically characterizing the SNR of simultaneously tracked satellites. Furthermore, based on the SNR characteristics across satellites, the system distinguishes between RFI and non-RFI sources. The effectiveness of the detection system is demonstrated through both simulated signal interference waves and real-world interference events.
基于瑞典 CORS 网络的全球导航卫星系统干扰监测和探测 SWEPOS
全球导航卫星系统(GNSS)干扰的存在对 GNSS 和依赖 GNSS 的基础设施都构成了重大风险。本文介绍了如何利用现有的全球导航卫星系统基础设施,即拥有 500 多个台站的瑞典连续运行参考站网络 SWEPOS,来控制全球导航卫星系统信号的质量,并检测全球导航卫星系统和相邻频段的干扰。本研究介绍了一种基于 SWEPOS 的自动系统,该系统通过检测全球定位系统、全球导航卫星系统、伽利略系统和北斗系统频段的信噪比 (SNR),有效检测 GNSS 干扰。该系统将跟踪卫星的信噪比与历史数据进行比较,通过统计同时跟踪卫星的信噪比特征来检测射频干扰(RFI)。此外,根据各卫星的信噪比特征,该系统还能区分射频干扰源和非射频干扰源。通过模拟信号干扰波和真实世界的干扰事件,证明了该检测系统的有效性。
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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来源期刊
Journal of Geodetic Science
Journal of Geodetic Science REMOTE SENSING-
CiteScore
1.90
自引率
7.70%
发文量
3
审稿时长
14 weeks
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