Accurate Long-Term Evolution/Wi-Fi hybrid positioning technology for emergency rescue

Autor: Myungin Ji, Ju-il Jeon, Kyeong-Soo Han, Youngsu Cho
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: ETRI Journal, Vol 45, Iss 6, Pp 939-951 (2023)
Druh dokumentu: article
ISSN: 1225-6463
2233-7326
DOI: 10.4218/etrij.2022-0234
Popis: It is critical to estimate the location using only Long-Term Evolution (LTE) and Wi-Fi information gathered by the user's smartphone and deployable for emergency rescue, regardless of whether the Global Positioning System is received. In this research, we used a vehicle to gather LTE and Wi-Fi wireless signals over a large area for an extended period of time. After that, we used the learning technique to create a positioning database that included both collection and noncollection points. We presented a two-step positioning algorithm that utilizes coarse localization to discover a rough location in a wide area rapidly and fine localization to estimate a particular location based on the coarse position. We confirmed our technology utilizing different sorts of devices in four regional types that are generally encountered: dense urban, urban, suburban, and rural. Results presented that our algorithm can satisfactorily achieve the target accuracy necessary in emergency rescue circumstances.
Databáze: Directory of Open Access Journals
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