Smartphone-based Indoor Navigation for Guidance in Finding Location Buildings Using Measured WiFi-RSSI

Liliek Triyono - Politeknik Negeri Semarang, Semarang, Indonesia
- Prayitno - Politeknik Negeri Semarang, Semarang, Indonesia
Mosiur Rahaman - Asia University, Taichung City 413, Taiwan
- Sukamto - Politeknik Negeri Semarang, Semarang, Indonesia
Amran Yobioktabera - Politeknik Negeri Semarang, Semarang, Indonesia


Citation Format:



DOI: http://dx.doi.org/10.30630/joiv.6.4.1528

Abstract


This study investigates a Wi-Fi-based indoor navigation system to determine building locations. The system was developed using the fingerprint method from the Received Signal Strength Indication (RSSI) of each Access Point (AP). The main components of a smartphone-based system use data from Wi-Fi and the Global Positioning System (GPS). The system developed for navigation is designed and implemented as an element of a dynamic, seamless mobility planning and building location route guidance application. Building map data is collected from Google Map data and enhanced by coloring the geographic location of buildings displayed on mobile devices. Navigational aids collected from sensors provide trip orientation and position updates. The approach of measuring the distance between known positions is compared to those displayed in the application with the haversine formula to measure the accuracy of the position displayed. A series of experiments were conducted in the Politeknik Negeri Semarang area, Indonesia. The experiment results showed that the Wi-Fi-based indoor positioning system was accurate within 7.050 meters of the error for that location, thus proving the system's usefulness for determining the location of buildings in the campus area. The measurement has not adopted the maximum APs placement for signal coverage and strength, only using the existing APs positions. The temperature nor humidity was neither measured in each area where the AP was installed, which is discussed later. This system can help visitors without asking, even though they have only visited once.

Keywords


Navigation; RSSI; positioning; smartphone; wireless technologies.

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