Basic principles of Positioning
GPS receivers can calculate their own position and speed from the signal propagation times. In combination with geoinformation (topology, road, air or sea maps), this position information enables guidance to a selected location or a route, taking into account desired criteria. Simplified even more: Transmitters send radio signals to a receiver. The receiver interprets these signals and calculates its position within a given topography. The principles behind this are trilateration and triangulation.
A smart device equipped with an appropriate app, a smartphone or a tablet, can interpret beacon, light or WLAN signals on the basis of their strength and with the help of the topographical information stored as a “floor plan” and determine its own position, i.e. the position of the user, within the structural unit covered by beacon signals. From this position, a route to any point of interest within the beacon installation, i.e. the area covered by signals, can be calculated and displayed.