BASISMAP: sequence-based similarity search for geomagnetic positioning

Indoor localization has become a popular topic with the development of location-based services (LBS) and indoor navigation systems. Beside these circumstances positioning been focus attention for researchers as most important component applications. Many signals are used distinguishable features positioning. RF-based Wi-Fi BLE systems ones have preferred because their high feature. The use geomagnetism, natural signal found all over world, also interest to many researchers. Geomagnetic being distorted in area due effect structure by using that information takes opportunity determine relevant location. In this study, new method is proposed convert unknown into location data magnetic fingerprint database. sequential collected dynamic comparison buffer motion evaluated help similarity search called matrix profile, position obtained. study was compared other methods literature its prominent weak points were shared. performance site-survey collecting an office environment. It concluded cumulative error below 2.2 m normal operating phase system on 100-m-long path. Compared literature, low complexity efficient solution proposed. Furthermore, matrix-profile-based path matching first time sequence-based localization.