A Cumulant-Based Method for Acquiring GNSS Signals
Global Navigation Satellite Systems (GNSS) provide positioning, velocity, and time services for civilian applications. A critical step in the positioning process is the acquisition of visible satellites in the sky. Modern GNSS systems, such as Galileo—developed and maintained by the European Union—u...
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MDPI AG
2024-09-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/24/19/6234 |
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| author | He-Sheng Wang Hou-Yu Wang Dah-Jing Jwo |
| author_facet | He-Sheng Wang Hou-Yu Wang Dah-Jing Jwo |
| author_sort | He-Sheng Wang |
| collection | DOAJ |
| description | Global Navigation Satellite Systems (GNSS) provide positioning, velocity, and time services for civilian applications. A critical step in the positioning process is the acquisition of visible satellites in the sky. Modern GNSS systems, such as Galileo—developed and maintained by the European Union—utilize a new modulation technique known as Binary Offset Carrier (BOC). However, BOC signals introduce multiple side-peaks in their autocorrelation function, which can lead to significant errors during the acquisition process. In this paper, we propose a novel acquisition method based on higher-order cumulants that effectively eliminates these side-peaks. This method is capable of simultaneously acquiring both conventional ranging signals, such as GPS C/A code, and BOC-modulated signals. The effectiveness of the proposed method is demonstrated through the acquisition of simulated signals, with a comparison to traditional methods. Additionally, we apply the proposed method to real satellite signals to further validate its performance. Our results show that the proposed method successfully suppresses side-peaks, improves acquisition accuracy in weak signal environments, and demonstrates potential for indoor GNSS applications. The study concludes that while the method may increase computational load, its performance in challenging conditions makes it a promising approach for future GNSS receiver designs. |
| format | Article |
| id | doaj-art-1f80a0e1bce241ffbe6a21989b45eaf7 |
| institution | OA Journals |
| issn | 1424-8220 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-1f80a0e1bce241ffbe6a21989b45eaf72025-08-20T01:47:34ZengMDPI AGSensors1424-82202024-09-012419623410.3390/s24196234A Cumulant-Based Method for Acquiring GNSS SignalsHe-Sheng Wang0Hou-Yu Wang1Dah-Jing Jwo2Department of Communications, Navigation and Control Engineering, National Taiwan Ocean University, 2 Peining Rd., Keelung 202301, TaiwanDepartment of Communications, Navigation and Control Engineering, National Taiwan Ocean University, 2 Peining Rd., Keelung 202301, TaiwanDepartment of Communications, Navigation and Control Engineering, National Taiwan Ocean University, 2 Peining Rd., Keelung 202301, TaiwanGlobal Navigation Satellite Systems (GNSS) provide positioning, velocity, and time services for civilian applications. A critical step in the positioning process is the acquisition of visible satellites in the sky. Modern GNSS systems, such as Galileo—developed and maintained by the European Union—utilize a new modulation technique known as Binary Offset Carrier (BOC). However, BOC signals introduce multiple side-peaks in their autocorrelation function, which can lead to significant errors during the acquisition process. In this paper, we propose a novel acquisition method based on higher-order cumulants that effectively eliminates these side-peaks. This method is capable of simultaneously acquiring both conventional ranging signals, such as GPS C/A code, and BOC-modulated signals. The effectiveness of the proposed method is demonstrated through the acquisition of simulated signals, with a comparison to traditional methods. Additionally, we apply the proposed method to real satellite signals to further validate its performance. Our results show that the proposed method successfully suppresses side-peaks, improves acquisition accuracy in weak signal environments, and demonstrates potential for indoor GNSS applications. The study concludes that while the method may increase computational load, its performance in challenging conditions makes it a promising approach for future GNSS receiver designs.https://www.mdpi.com/1424-8220/24/19/6234GNSSGalileoBOChigher-order cumulant |
| spellingShingle | He-Sheng Wang Hou-Yu Wang Dah-Jing Jwo A Cumulant-Based Method for Acquiring GNSS Signals Sensors GNSS Galileo BOC higher-order cumulant |
| title | A Cumulant-Based Method for Acquiring GNSS Signals |
| title_full | A Cumulant-Based Method for Acquiring GNSS Signals |
| title_fullStr | A Cumulant-Based Method for Acquiring GNSS Signals |
| title_full_unstemmed | A Cumulant-Based Method for Acquiring GNSS Signals |
| title_short | A Cumulant-Based Method for Acquiring GNSS Signals |
| title_sort | cumulant based method for acquiring gnss signals |
| topic | GNSS Galileo BOC higher-order cumulant |
| url | https://www.mdpi.com/1424-8220/24/19/6234 |
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