Chirp Interference Mitigation in GNSS Systems Using Chirp Parameter Estimation and Pulse Blanking
Chirp interference is a major source of disturbance in Global Navigation Satellite System (GNSS) signal processing. Whether the chirp interference signal appears continuous or pulsed to a GNSS receiver depends on its bandwidth relative to the receiver bandwidth. This research proposes a method that...
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IEEE
2024-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/10771722/ |
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| author | Nabil Jardak |
| author_facet | Nabil Jardak |
| author_sort | Nabil Jardak |
| collection | DOAJ |
| description | Chirp interference is a major source of disturbance in Global Navigation Satellite System (GNSS) signal processing. Whether the chirp interference signal appears continuous or pulsed to a GNSS receiver depends on its bandwidth relative to the receiver bandwidth. This research proposes a method that reduces chirp interference in GNSS receivers for both continuous and pulsed chirp signals. It combines chirp estimation and suppression with pulse blanking. Simulation results indicate that L1C/A signal acquisition remains successful with up to 62 dB of jammer-to-noise ratio (J/No) for continuous chirp, and 30.5 dB for pulsed chirp. In terms of tracking performance, L1C/A GPS signals can be successfully tracked with J/No of up to 71 dB for continuous chirp and 55 dB for pulsed chirp. The technique was then subjected to a real-life GPS L1C/A signal summed with the strong signal of a commercial civil chirp jammer (J/No =34.2 dB). It has shown successful acquisition and tracking of all visible satellites with a C/No degradation less than 1 dB and a positioning error of a few meters, which confirmed the effectiveness of the technique. In addition to its attractive performance, the low complexity of the technique makes it practical for real-time implementation. |
| format | Article |
| id | doaj-art-74cd396f2f79427c82a8374adb96a9cd |
| institution | Kabale University |
| issn | 2169-3536 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj-art-74cd396f2f79427c82a8374adb96a9cd2024-12-10T00:01:44ZengIEEEIEEE Access2169-35362024-01-011218161718163110.1109/ACCESS.2024.350926210771722Chirp Interference Mitigation in GNSS Systems Using Chirp Parameter Estimation and Pulse BlankingNabil Jardak0https://orcid.org/0000-0003-3810-1280French-German Research Institute of Saint-Louis, Saint-Louis, FranceChirp interference is a major source of disturbance in Global Navigation Satellite System (GNSS) signal processing. Whether the chirp interference signal appears continuous or pulsed to a GNSS receiver depends on its bandwidth relative to the receiver bandwidth. This research proposes a method that reduces chirp interference in GNSS receivers for both continuous and pulsed chirp signals. It combines chirp estimation and suppression with pulse blanking. Simulation results indicate that L1C/A signal acquisition remains successful with up to 62 dB of jammer-to-noise ratio (J/No) for continuous chirp, and 30.5 dB for pulsed chirp. In terms of tracking performance, L1C/A GPS signals can be successfully tracked with J/No of up to 71 dB for continuous chirp and 55 dB for pulsed chirp. The technique was then subjected to a real-life GPS L1C/A signal summed with the strong signal of a commercial civil chirp jammer (J/No =34.2 dB). It has shown successful acquisition and tracking of all visible satellites with a C/No degradation less than 1 dB and a positioning error of a few meters, which confirmed the effectiveness of the technique. In addition to its attractive performance, the low complexity of the technique makes it practical for real-time implementation.https://ieeexplore.ieee.org/document/10771722/ChirpGNSSinterference mitigationinterference suppressionpulse blanking |
| spellingShingle | Nabil Jardak Chirp Interference Mitigation in GNSS Systems Using Chirp Parameter Estimation and Pulse Blanking IEEE Access Chirp GNSS interference mitigation interference suppression pulse blanking |
| title | Chirp Interference Mitigation in GNSS Systems Using Chirp Parameter Estimation and Pulse Blanking |
| title_full | Chirp Interference Mitigation in GNSS Systems Using Chirp Parameter Estimation and Pulse Blanking |
| title_fullStr | Chirp Interference Mitigation in GNSS Systems Using Chirp Parameter Estimation and Pulse Blanking |
| title_full_unstemmed | Chirp Interference Mitigation in GNSS Systems Using Chirp Parameter Estimation and Pulse Blanking |
| title_short | Chirp Interference Mitigation in GNSS Systems Using Chirp Parameter Estimation and Pulse Blanking |
| title_sort | chirp interference mitigation in gnss systems using chirp parameter estimation and pulse blanking |
| topic | Chirp GNSS interference mitigation interference suppression pulse blanking |
| url | https://ieeexplore.ieee.org/document/10771722/ |
| work_keys_str_mv | AT nabiljardak chirpinterferencemitigationingnsssystemsusingchirpparameterestimationandpulseblanking |