Ultra-wideband is a short-range radio technology (frequency range between 3.1 and 10.6 gigahertz). It is used, for example, to replace cable-based connections between computers and peripheral devices. Wireless transmission of audio or video signals between multimedia devices is also possible. The maximum data rate is 480 megabits per second. The transmission power is usually less than one milliwatt.
One area of application is indoor positioning in industrial environments (range up to 20, maximum 35 meters), where UWB is characterized by high accuracy. Position determination is not based on the measurement of signal strengths, but on the measurement of signal propagation times, which depend on the distance between the receiver and the transmitters (tags) on the objects. The combination of the measured values from at least three receivers allows a position to be determined with an accuracy of between ten and 30 centimeters.