{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T03:49:31Z","timestamp":1747194571284,"version":"3.40.5"},"reference-count":25,"publisher":"SAGE Publications","issue":"3","license":[{"start":{"date-parts":[[2020,3,1]],"date-time":"2020-03-01T00:00:00Z","timestamp":1583020800000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["61771393"],"award-info":[{"award-number":["61771393"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Foundation of State Key Laboratory of Air Traffic Management System and Technology","award":["SKLATM201702"],"award-info":[{"award-number":["SKLATM201702"]}]},{"DOI":"10.13039\/501100002663","name":"northwestern polytechnical university","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100002663","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["International Journal of Distributed Sensor Networks"],"published-print":{"date-parts":[[2020,3]]},"abstract":"<jats:p> 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<jats:sup>\u22124<\/jats:sup> when the signal-to-noise ratio is greater than 17\u2009dB, 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. <\/jats:p>","DOI":"10.1177\/1550147720914770","type":"journal-article","created":{"date-parts":[[2020,3,23]],"date-time":"2020-03-23T11:09:04Z","timestamp":1584961744000},"page":"155014772091477","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["A novel demodulation algorithm for VHF Data Broadcast signals in multi-sources augmentation navigation system"],"prefix":"10.1177","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2977-9746","authenticated-orcid":false,"given":"Hongwei","family":"Zhao","sequence":"first","affiliation":[{"name":"School of Electronics and Information, Northwestern Polytechnical University, Xi\u2019an, China"},{"name":"State Key Laboratory of Air Traffic Management System and Technology, Nanjing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zichun","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Electronics and Information, Northwestern Polytechnical University, Xi\u2019an, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaozhu","family":"Shi","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Air Traffic Management System and Technology, Nanjing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yihui","family":"Yin","sequence":"additional","affiliation":[{"name":"School of Electronics and Information, Northwestern Polytechnical University, Xi\u2019an, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2020,3,23]]},"reference":[{"volume-title":"GNSS-based precision approach local area augmentation system (LAAS) signal-in-space interface control document","year":"2008","key":"bibr1-1550147720914770"},{"key":"bibr2-1550147720914770","doi-asserted-by":"publisher","DOI":"10.1007\/s40815-017-0436-5"},{"key":"bibr3-1550147720914770","doi-asserted-by":"publisher","DOI":"10.1109\/TITS.2016.2627600"},{"key":"bibr4-1550147720914770","doi-asserted-by":"publisher","DOI":"10.1016\/j.paerosci.2017.10.002"},{"key":"bibr5-1550147720914770","doi-asserted-by":"publisher","DOI":"10.1109\/TUFFC.2012.2220"},{"key":"bibr6-1550147720914770","first-page":"978","volume":"31","author":"Weidong J","year":"2016","journal-title":"Chin J Radio Sci"},{"key":"bibr7-1550147720914770","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2018.2791500"},{"key":"bibr8-1550147720914770","first-page":"365","volume-title":"IEEE global telecommunications conference GLOBECOM \u201991: countdown to the new millennium. 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