Indoor navigation: wiki Technical terms explained

Indoor Positioning with Ultra-wideband

How can ultra-wideband (UWB) be used for indoor positioning?

Ultra-wideband (UWB) is a short-range radio technology which can be used for indoor positioning. This technology is particularly in demand in manufacturing and logistics, where accuracy of 10-30 centimetres is required. This short-range radio technology uses an extremely wide frequency range with a bandwidth of at least 500 MHz. UWB works with a low transmission power (0.5 mW / -41.3 dBm/MHz) to avoid disturbing already occupied frequency ranges. Only special UWB receivers can detect the signal. For position determination, the running time of light between a transmitter (UWB tag) and several receivers is measured.

The frequency range of ultra wideband is between 3.1 and 10.6 GHz. For example, it can establish connections between computers and various devices such as printers and monitors, but it can also transmit audio and video data. In these functions it is similar to Bluetooth or WLAN. Thanks to its robustness against interference and the high data rate (110 kbit/s - 6.8 Mbit/s) it is also suitable for ultra-precise indoor positioning.

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