Multi-Parameter Adaptive Notch Filter (MPANF) for Enhanced Interference Mitigation
Interference signals degrade global navigation satellite system (GNSS) performance and must be mitigated. Chirp signals can be mitigated with an adaptive notch filter (ANF), but the dynamic behavior limits performance. An ANF determines the instantaneous frequency and removes interference with a not...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Institute of Navigation
2023-03-01
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| Series: | Navigation |
| Online Access: | https://navi.ion.org/content/70/2/navi.570 |
| _version_ | 1827586438454050816 |
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| author | Johannes Rossouw van der Merwe Iñigo Cortés Fabio Garzia Alexander Rügamer Wolfgang Felber |
| author_facet | Johannes Rossouw van der Merwe Iñigo Cortés Fabio Garzia Alexander Rügamer Wolfgang Felber |
| author_sort | Johannes Rossouw van der Merwe |
| collection | DOAJ |
| description | Interference signals degrade global navigation satellite system (GNSS) performance and must be mitigated. Chirp signals can be mitigated with an adaptive notch filter (ANF), but the dynamic behavior limits performance. An ANF determines the instantaneous frequency and removes interference with a notch filter. However, there are several limitations. In this article, we propose a multi-parameter adaptive notch filter (MPANF) approach that significantly enhances conventional ANFs. First, it uses an loop-bandwidth control algorithm (LBCA) to alter the loop bandwidth of an frequency-locked loop (FLL)-based adaptation algorithm to facilitate superior tracking agility-to-precision trade-off. Second, it dynamically adjusts the notch depth to switch on interference mitigation or pass the signal through. Third, it modifies the notch width to accommodate tracking stability and optimize interference signal suppression to GNSS signal removal. The presented MPANF exhibits superior performance against chirp signals, including faster response to jump discontinuities. |
| first_indexed | 2024-03-09T00:01:18Z |
| format | Article |
| id | doaj.art-cb1bed863bcd4c5f815292304f21671f |
| institution | Directory Open Access Journal |
| issn | 2161-4296 |
| language | English |
| last_indexed | 2024-03-09T00:01:18Z |
| publishDate | 2023-03-01 |
| publisher | Institute of Navigation |
| record_format | Article |
| series | Navigation |
| spelling | doaj.art-cb1bed863bcd4c5f815292304f21671f2023-12-12T17:32:42ZengInstitute of NavigationNavigation2161-42962023-03-0170210.33012/navi.570navi.570Multi-Parameter Adaptive Notch Filter (MPANF) for Enhanced Interference MitigationJohannes Rossouw van der MerweIñigo CortésFabio GarziaAlexander RügamerWolfgang FelberInterference signals degrade global navigation satellite system (GNSS) performance and must be mitigated. Chirp signals can be mitigated with an adaptive notch filter (ANF), but the dynamic behavior limits performance. An ANF determines the instantaneous frequency and removes interference with a notch filter. However, there are several limitations. In this article, we propose a multi-parameter adaptive notch filter (MPANF) approach that significantly enhances conventional ANFs. First, it uses an loop-bandwidth control algorithm (LBCA) to alter the loop bandwidth of an frequency-locked loop (FLL)-based adaptation algorithm to facilitate superior tracking agility-to-precision trade-off. Second, it dynamically adjusts the notch depth to switch on interference mitigation or pass the signal through. Third, it modifies the notch width to accommodate tracking stability and optimize interference signal suppression to GNSS signal removal. The presented MPANF exhibits superior performance against chirp signals, including faster response to jump discontinuities.https://navi.ion.org/content/70/2/navi.570 |
| spellingShingle | Johannes Rossouw van der Merwe Iñigo Cortés Fabio Garzia Alexander Rügamer Wolfgang Felber Multi-Parameter Adaptive Notch Filter (MPANF) for Enhanced Interference Mitigation Navigation |
| title | Multi-Parameter Adaptive Notch Filter (MPANF) for Enhanced Interference Mitigation |
| title_full | Multi-Parameter Adaptive Notch Filter (MPANF) for Enhanced Interference Mitigation |
| title_fullStr | Multi-Parameter Adaptive Notch Filter (MPANF) for Enhanced Interference Mitigation |
| title_full_unstemmed | Multi-Parameter Adaptive Notch Filter (MPANF) for Enhanced Interference Mitigation |
| title_short | Multi-Parameter Adaptive Notch Filter (MPANF) for Enhanced Interference Mitigation |
| title_sort | multi parameter adaptive notch filter mpanf for enhanced interference mitigation |
| url | https://navi.ion.org/content/70/2/navi.570 |
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