Distance Estimation via UWB

During a global pandemic, keeping distance is one of the most important aspects of reducing the occurrence of infection. Next to the individual perception it is essential to measure the distance with technological tools to ensure the compliance of the safety distance, which is at least 1.5 meters.

Next to technologies such as the distance estimation via Bluetooth for social distancing apps, the Ultra Wide Band (UWB) radio technology provides an appropriate alternative of distance measuring amongst customers or employees within shops and companies.

How can UWB be used for social distancing?

By means of the measuring principle round trip time (RTT) a signal is send from the transmitter to the recipient and back. Thereby the exact position can be calculated on the basis of the needed period of time.  The UWB technology is based on temporal short impulses, so that a very high time resolution can be achieved. Due to this, a high robustness against effects of multipath transmission and a high accuracy of the measured person is given. With a big radio frequency-range and simultaneously low power levels of the signals, an undisturbed use of the spectrum with coexistence of other radio systems, is possible.

The wireless transmission simplifies the hardware-design of UWB-systems, whereby an easy as well as precise measurement is met, which is able to assure the safety distance.

Functionality of distance estimation via UWB in retailing.
© Fraunhofer IIS/Pachl
Functionality of Distance Estimation via UWB.







This solution convinces with its easy functionality and precise measurement. Besides that, it is robust against multipath transmission and is able to coexist with other radio systems.



  • easy
  • precise
  • robust
  • coexistent



Use Cases

Use Cases


Besides using this technology in public buildings, it can be used for safety tests for companies and states. Due to the testing, concepts can be compiled to facilitate the compliance of distance keeping in real situations.

  • public area
  • shops
  • cinemas
  • restaurants
  • specific tests for companies and states