A novel demodulation algorithm for VHF Data Broadcast signals in multi-sources augmentation navigation system
The augmentation navigation system based on multi-source information fusion can significantly improve position accuracy, and the multi-source information is usually transmitted through VHF Data Broadcast . Aiming at the burst characteristics of VHF Data Broadcast, this article proposed a novel demod...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-03-01
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| Series: | International Journal of Distributed Sensor Networks |
| Online Access: | https://doi.org/10.1177/1550147720914770 |
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| _version_ | 1849701377486356480 |
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| author | Hongwei Zhao Zichun Zhang Xiaozhu Shi Yihui Yin |
| author_facet | Hongwei Zhao Zichun Zhang Xiaozhu Shi Yihui Yin |
| author_sort | Hongwei Zhao |
| collection | DOAJ |
| description | The augmentation navigation system based on multi-source information fusion can significantly improve position accuracy, and the multi-source information is usually transmitted through VHF Data Broadcast . Aiming at the burst characteristics of VHF Data Broadcast, this article proposed a novel demodulation algorithm based on open-loop structure. When a VHF Data Broadcast burst is detected, the timing recovery should be finished first, and the value of cross-correlation between the timing-recovered signal and the local training symbol is calculated to complete the frame synchronization. Then, the data-aided and non-data-aided algorithms are used to estimate the frequency offset. Finally, the phase offset is estimated and the carrier synchronization is accomplished. The simulation results demonstrate that the proposed algorithm can quickly accomplished carrier synchronization without using feedback-loop structure, and the bit error rate is less than 10 −4 when the signal-to-noise ratio is greater than 17 dB, which satisfy the requirement of receiving VHF Data Broadcast signals in augmentation navigation system. Therefore, the proposed algorithm can be used for receiving VHF Data Broadcast signals. |
| format | Article |
| id | doaj-art-1cdfad4ec6934efd8d30468eb804a34c |
| institution | DOAJ |
| issn | 1550-1477 |
| language | English |
| publishDate | 2020-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Distributed Sensor Networks |
| spelling | doaj-art-1cdfad4ec6934efd8d30468eb804a34c2025-08-20T03:17:58ZengWileyInternational Journal of Distributed Sensor Networks1550-14772020-03-011610.1177/1550147720914770A novel demodulation algorithm for VHF Data Broadcast signals in multi-sources augmentation navigation systemHongwei Zhao0Zichun Zhang1Xiaozhu Shi2Yihui Yin3State Key Laboratory of Air Traffic Management System and Technology, Nanjing, ChinaSchool of Electronics and Information, Northwestern Polytechnical University, Xi’an, ChinaState Key Laboratory of Air Traffic Management System and Technology, Nanjing, ChinaSchool of Electronics and Information, Northwestern Polytechnical University, Xi’an, ChinaThe augmentation navigation system based on multi-source information fusion can significantly improve position accuracy, and the multi-source information is usually transmitted through VHF Data Broadcast . Aiming at the burst characteristics of VHF Data Broadcast, this article proposed a novel demodulation algorithm based on open-loop structure. When a VHF Data Broadcast burst is detected, the timing recovery should be finished first, and the value of cross-correlation between the timing-recovered signal and the local training symbol is calculated to complete the frame synchronization. Then, the data-aided and non-data-aided algorithms are used to estimate the frequency offset. Finally, the phase offset is estimated and the carrier synchronization is accomplished. The simulation results demonstrate that the proposed algorithm can quickly accomplished carrier synchronization without using feedback-loop structure, and the bit error rate is less than 10 −4 when the signal-to-noise ratio is greater than 17 dB, which satisfy the requirement of receiving VHF Data Broadcast signals in augmentation navigation system. Therefore, the proposed algorithm can be used for receiving VHF Data Broadcast signals.https://doi.org/10.1177/1550147720914770 |
| spellingShingle | Hongwei Zhao Zichun Zhang Xiaozhu Shi Yihui Yin A novel demodulation algorithm for VHF Data Broadcast signals in multi-sources augmentation navigation system International Journal of Distributed Sensor Networks |
| title | A novel demodulation algorithm for VHF Data Broadcast signals in multi-sources augmentation navigation system |
| title_full | A novel demodulation algorithm for VHF Data Broadcast signals in multi-sources augmentation navigation system |
| title_fullStr | A novel demodulation algorithm for VHF Data Broadcast signals in multi-sources augmentation navigation system |
| title_full_unstemmed | A novel demodulation algorithm for VHF Data Broadcast signals in multi-sources augmentation navigation system |
| title_short | A novel demodulation algorithm for VHF Data Broadcast signals in multi-sources augmentation navigation system |
| title_sort | novel demodulation algorithm for vhf data broadcast signals in multi sources augmentation navigation system |
| url | https://doi.org/10.1177/1550147720914770 |
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