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来自LEO卫星的GNSS无线电频率干扰监测:一个实验室原型
Micaela Troglia Gamba1, Brendan David Polidori1, Alex Minetto2
1LINKS Foundation, 10138 Turin, Italy.
Sensors (Basel, Switzerland)
|January 23, 2024
概括
一个新的纳米卫星系统有效地检测和分类影响全球导航卫星系统 (GNSS) 信号的地面射频干扰 (RFI). 该系统使用两个算法来识别干扰和伪造,显示了民用RFI监控的有希望的结果.
科学领域:
- 太空科学 太空科学
- 信号处理 信号处理
- 导航系统 导航系统
背景情况:
- 无线电频率干扰 (RFI) 严重破坏全球导航卫星系统 (GNSS) 信号.
- 低地球轨道 (LEO) 卫星为GNSS RFI监测提供了一个有前途的平台.
- 近年来,人们对基于LEO的RFI检测有越来越多的兴趣和倡议.
研究的目的:
- 提出和实施一个用于探测,分类和定位地面GNSS RFI的太空载系统,特别是干扰和伪造.
- 开发一个适合纳米卫星部署的RFI检测软件模块.
- 评估实施的RFI检测算法的性能和计算负载.
主要方法:
- 在纳米卫星平台上开发用于RFI检测的软件模块.
- 实施两种不同的RFI检测算法:用于非GNSS类干扰 (例如,声干扰) 的千平方合适性 (GoF) 和用于GNSS类干扰 (例如,伪造) 的快照获取.
- 通过初步测试来评估检测性能,灵敏度和计算负载.
主要成果:
- 实施的系统展示了对干扰和伪造信号的有希望的检测能力.
- 初步测试显示在识别RFI时具有良好的灵敏度.
- 分析表明了计算负载优化的领域,特别是对于快照采集检测器.
结论:
- 开发的基于纳米卫星的RFI检测系统显示了用于监测地面GNSS干扰的民用用途的潜力.
- 千平方GoF和快照获取算法为检测不同类型的RFI提供了有效的手段.
- 为了提高效率,建议进一步优化计算负载,特别是对于快照获取方法.
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