A Novel Approach to Mobile Indoor Navigation Systems

GPS (Global Positioning System) is used to determinethe position of an outdoor user with a high degree of accuracy,but it works poorly or not at all in indoor locations.Many different techniques have been proposed for indoorpositioning, including reference points, such as NFC tags orBluetooth beacons, radio signal triangulation, and patternor image recognition [3, 6]. Any of these techniques canbe combined with each other or with a dead-reckoning approach,adding user movement data from sensors, in orderto arrive at a more precise position estimate [3]. Indoor navigationuser interfaces are essentially the same as those usedoutdoors: maps, turn-by-turn directions, and augmented reality.