Indoor Positioning System by using Triangulation Algorithm
Ebru Alp1, Tamer Dag2, Taner Arsan3

1Ebru Alp, Department of Computer Engineering, Kadir Has University, Turkey.
2Tamer Dag, Department of Computer Engineering, Kadir Has University, Turkey.
3Taner Arsan, Department of Computer Engineering, Kadir Has University, Turkey.
Manuscript received on 13 January 2016 | Revised Manuscript received on 22 January 2016 | Manuscript Published on 30 January 2016 | PP: 12-18 | Volume-5 Issue-8, January 2016 | Retrieval Number: H2255015816/16©BEIESP
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Abstract: In this paper, a Wi-Fi based indoor positioning system (IPS) is developed. IPSs are expected to be used in a vast variety of environments such as shopping malls, hospitals, airports and campuses for navigation purposes, real-time location based advertisements, efficient emergency handling situations. Due to the rapid growth of wireless access points in urban areas and the booming usage of smart phones, Wi-Fi has become one of the key technologies to enable location based services for indoors where GPS technology would not work. This paper introduces least square method based triangulation algorithm for IPSs. The implemented system has been tested under various circumstances in order to achieve the minimum error possible. Wi-Fi channel optimization, filtering, calibration of the relation between the signal strength and distance, using more Wi-Fi modems and the least square method are some of the improvements made on the implemented system. The results show that the location accuracy is significantly improved when compared with the simple triangulation algorithm.
Keywords: Indoor Positioning Development, Triangulation Algorithm, Least Square Method.

Scope of the Article: Algorithm Engineering