College of Software, Nankai University, Tianjin 300071, China

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Abstract—Combining a variety of positioning technologies and making use of their respective advantages, this paper presents a strategy of seamless positioning. With this method, the positioning system can be used for both indoor and outdoor environments, and it can solve the problems which most LBS applications cannot locate in some circumstances. The paper also designs a new indoor positioning algorithm based on WiFi received signal strength (RSS) fingerprint. Then the “Indoor/Outdoor Positioning System” is designed and implemented on the Android platform according to the strategy and the algorithm above, and the performance of the system proves to be fine. It can meet the users’ actual use properly.

Index Terms—Seamless Positioning, Global Positioning System (GPS), WiFi Positioning, Cellular Positioning, Received Signal Strength Indication (RSSI)

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Cite: Jinlong E, Jie Ma, "A Research on Seamless Indoor and Outdoor Positioning," Journal of Computers vol. 8, no. 11, pp. 3047-3057, 2013.