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Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/98239

Title:	A large scale cooperative localization method
Authors:	Tsai, Tzu-Chieh;Teng, Wei-Tun 蔡子傑;鄧偉敦
Contributors:	資科系
Date:	2012-08
Issue Date:	2016-06-22 17:15:22 (UTC+8)
Abstract:	Smart phones and Location Based Services (LBSs) are getting very popular in recent years. To this end, locating the positions of smart phones becomes inevitable. To date, there exist some localization systems in some specific areas. For instance, GPS can be used only in the outdoor space. However, people always live in large scale environments like campus, urban and tourist areas, including both indoor and outdoor space. For large scale environment, a single location technique is not always available everywhere. Therefore, we propose a heterogeneous localization algorithm which combines GPS, WiFi and Internet Of Things (IOT) localizations. We also introduce the "localization possibility" for each localization method to estimate the most "reliable" (possible) one. Besides, the more reliable nearby users provide their localization information, the further enhancement of the localization accuracy will get. By measuring the relative WiFi signal strength, it helps especially those users who have no any available localization methods. We call this concept "cooperative localization". Finally, we evaluate the accuracy of our algorithms by simulation. Because signal strength fluctuates from minute to minute, we measure empirical data and put into the simulator to do our experiments. Finally, we also verify that our idea can be implemented on smart phones and work feasibly.
Relation:	IEEE ICCC 2012, First IEEE International Conference on Communications in China, Aug 15-17, 2012, Beijing, China 國際標準書號9781467328142
Data Type:	conference
DOI link:	http://dx.doi.org/10.1109/ICCChina.2012.6356978
DOI:	10.1109/ICCChina.2012.6356978
Appears in Collections:	[Department of Computer Science ] Proceedings

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