ABSTRACT
Localization, or the problem of estimating spatial relationships among objects, has been a classical problem in many disciplines, including mobile robotics, virtual reality systems, navigation systems, and cellular networks. Connecting the indoor location system to an inventory tracking system, marking all sensitive objects with radio frequency identification tags, makes sense. Positioning systems range from an object is closest to or record when an object crosses a boundary to sophisticated systems that can determine precise location using multiple readers with overlapping fields of view. With the advent of the global positioning systems (GPS) and the availability of chip-size GPS receivers, all future mobile wireless nodes can be equipped with the knowledge of their location. A user’s location will become information that is as common as the date is today, getting input from GPS when outdoors and other location-providing devices when indoors. Location-based service applications include intelligent information management in Wi-Fi hot spots.
