Ultra-Wideband (UWB)
Similar to most other positioning solutions, UWB positioning systems have proprietary scanners installed throughout the facility that continuously monitor UWB radio transceivers attached to clients. UWB systems, however, operate using radio signals having very wide bandwidth, and position calculations are made based on time-of-arrival techniques instead of signal strength. This leads to fairly good location accuracy. By reading the time of arrival of a beacon signal from a specific UWB radio transceiver from three or more scanners, for instance, the position of the tag and applicable object can be found.
Comparing with traditional narrowband systems, UWB systems have many advantages, such as the penetrating power, low power consumption, resistance to multi-path effects, high security, low complexity, and highly accurate positioning and so on. Therefore, UWB technology can be applied to indoor stationary or moving objects and people location tracking and navigation, and can provide very accurate positioning accuracy.
However, even though the distance measurements can be used to infer the position, they contain little information about orientation. Also, the mere dependence on position and the slow update rate (10 Hz) give a poor dynamic range.
However, even though the distance measurements can be used to infer the position, they contain little information about orientation. Also, the mere dependence on position and the slow update rate (10 Hz) give a poor dynamic range.