A Novel Three-Dimensional Indoor Localization Algorithm Based on Multi-Sensors
With the wildly application of the mobile internet, the market of location-based services is growing rapidly. At present, the main current method of indoor location is based on the finger point position technology of wireless local area network (WLAN), an
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A Novel Three-Dimensional Indoor Localization Algorithm Based on Multi-Sensors Zhifeng Li, Zhongliang Deng, Wenlong Liu and Lianming Xu
Abstract With the wildly application of the mobile internet, the market of location-based services is growing rapidly. At present, the main current method of indoor location is based on the finger point position technology of wireless local area network (WLAN), and combined with a fusion algorithm of pedestrian dead reckoning (PDR). Furthermore, due to the spread characteristics of Wi-Fi signal, there are some weak signal zones and even blind zones. This paper proposes a novel indoor localization algorithm. The algorithm combines the multi-finger point technology, geomagnetic navigation and inertial navigation, and uses the advantages of each technology to complement each other, to achieve the series, seamless, and three dimensions indoor location. Through the algorithm simulation and contrast analysis of experiment, the algorithm given in this paper has showed that the average positioning accuracy has improved nearly 37 %, the average positioning error can reach 2.72 m and the new algorithm has a 100 % coverage area rates in comparison with KNN\W-KNN\PDR and their fusion algorithm, which has proved the feasibility and effectiveness of this new fusion algorithm. Keywords Multi-sensors
Fusion algorithm High-precision
58.1 Introduction As the rapid development of intelligent mobile phone, it drives the mobile Internet application innovation. Location Based Service is rising rapidly in china. It has become one of most popular application in the field of mobile Internet. According Z. Li (&) Beijing University of Post and Telecommunication, Haidian District, Xitucheng Road. 10, Beijing 100876, China e-mail: [email protected] Z. Li Z. Deng W. Liu L. Xu Institute of EE, Beijing University of Post and Telecommunication, Beijing, China
J. Sun et al. (eds.), China Satellite Navigation Conference (CSNC) 2013 Proceedings, Lecture Notes in Electrical Engineering 245, DOI: 10.1007/978-3-642-37407-4_58, Ó Springer-Verlag Berlin Heidelberg 2013
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to a report released recently from the third data-research party—Enfodesk of the mobile Internet, the mobile Internet user scale will reach 606 million, the Mobile location services user scale will reach 510 million, and the Customer permeability will reach 84.2 % [1]. According to the development trend of intelligent mobile phone, the mobile phone will be integrated multi-functional sensor. It also shows the future development direction of intelligent mobile phone. How to make full use of these sensors, fuse the Wi-Fi location algorithm, to improve positioning accuracy, expand positioning range, increase location dimension. All these questions will become the focus of research in this paper.
58.1.1 The Wi-Fi Indoor Positioning In the domestic and foreign countries, the new wireless network technologies, especially Wi-Fi based on 802.11 agreements are widely used. The intelligent terminal has contained basically Wi-
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