Android Based Indoor Navigation Application usingEarth‟s Magnetic Field Pattern. Case Study: Universitas Multimedia Nusantara
Rijal Widhi Permadi, Maria Irmina Prasetiyowati, Kanisius Karyono · 2014
An indoor navigation application can be built by utilizing the pattern of Earth's magnetic field which is unique at each location. In previous research, users have to record magnetic values all the way inside the building site before the application can be used. By utilizing built-in magnetometer sensors, magnetic values on the X and Y axis that captured by the sensor will be stored in a database and used as a reference point. This research uses the fingerprinting method for creating the magnetic database. There are two main phases in the research process, the first phase is to create magnetic field map database and the second is creating Android application for positioning. This research implements two magnetic data comparison functions, which are random function and first position function. The result shows that the maximum error position value is 116.54 meter for random function. While first position function returns a smaller number, which is 18.83 meters. It can be concluded that indoor navigation with magnetic database yield better accuracy compared to indoor navigation using GPS. This approach can become reliable solution if there are no communication channels to convey the message or to triangulate the position in emergency situation.