Efficient Signal Quality Monitoring of GNSS Signals Disturbed by Evil Waveforms
Evil waveforms (EWFs) are anomalies in signals transmitted by a global navigation satellite system, provoked by electric malfunctions, that can significantly degrade the accuracy of the receiver’s position, velocity, and time solution. In this work, cross-correlation functions of a received signal d...
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| Format: | Article |
| Language: | English |
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Institute of Navigation
2024-11-01
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| Series: | Navigation |
| Online Access: | https://navi.ion.org/content/71/4/navi.668 |
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| _version_ | 1850172775342276608 |
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| author | Fernando D. Nunes Fernando M. G. Sousa |
| author_facet | Fernando D. Nunes Fernando M. G. Sousa |
| author_sort | Fernando D. Nunes |
| collection | DOAJ |
| description | Evil waveforms (EWFs) are anomalies in signals transmitted by a global navigation satellite system, provoked by electric malfunctions, that can significantly degrade the accuracy of the receiver’s position, velocity, and time solution. In this work, cross-correlation functions of a received signal disturbed by EWF distortion and the locally generated code signal are derived for threat models TM-A, TM-B, and TM-C, with expressions obtained for binary phase shift keying, binary offset carrier (BOC), and composite BOC pilot modulations. Closed-form expressions are offered in terms of sine integral functions for TM-A. A description is presented on how to use these results to assess the performance of EWF detectors through semi-analytic simulation, allowing the detectability and hazard regions to be determined in a computationally efficient way. |
| format | Article |
| id | doaj-art-f75ff2e6874a41bba5ae2b6b1f86a159 |
| institution | OA Journals |
| issn | 2161-4296 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Institute of Navigation |
| record_format | Article |
| series | Navigation |
| spelling | doaj-art-f75ff2e6874a41bba5ae2b6b1f86a1592025-08-20T02:20:00ZengInstitute of NavigationNavigation2161-42962024-11-0171410.33012/navi.668navi.668Efficient Signal Quality Monitoring of GNSS Signals Disturbed by Evil WaveformsFernando D. NunesFernando M. G. SousaEvil waveforms (EWFs) are anomalies in signals transmitted by a global navigation satellite system, provoked by electric malfunctions, that can significantly degrade the accuracy of the receiver’s position, velocity, and time solution. In this work, cross-correlation functions of a received signal disturbed by EWF distortion and the locally generated code signal are derived for threat models TM-A, TM-B, and TM-C, with expressions obtained for binary phase shift keying, binary offset carrier (BOC), and composite BOC pilot modulations. Closed-form expressions are offered in terms of sine integral functions for TM-A. A description is presented on how to use these results to assess the performance of EWF detectors through semi-analytic simulation, allowing the detectability and hazard regions to be determined in a computationally efficient way.https://navi.ion.org/content/71/4/navi.668 |
| spellingShingle | Fernando D. Nunes Fernando M. G. Sousa Efficient Signal Quality Monitoring of GNSS Signals Disturbed by Evil Waveforms Navigation |
| title | Efficient Signal Quality Monitoring of GNSS Signals Disturbed by Evil Waveforms |
| title_full | Efficient Signal Quality Monitoring of GNSS Signals Disturbed by Evil Waveforms |
| title_fullStr | Efficient Signal Quality Monitoring of GNSS Signals Disturbed by Evil Waveforms |
| title_full_unstemmed | Efficient Signal Quality Monitoring of GNSS Signals Disturbed by Evil Waveforms |
| title_short | Efficient Signal Quality Monitoring of GNSS Signals Disturbed by Evil Waveforms |
| title_sort | efficient signal quality monitoring of gnss signals disturbed by evil waveforms |
| url | https://navi.ion.org/content/71/4/navi.668 |
| work_keys_str_mv | AT fernandodnunes efficientsignalqualitymonitoringofgnsssignalsdisturbedbyevilwaveforms AT fernandomgsousa efficientsignalqualitymonitoringofgnsssignalsdisturbedbyevilwaveforms |