Fira Presents: Understanding UWB Ranging Techniques

In principal the operating concept of UWB is simple. Once a device that is equipped with a UWB radio such as a smartphone, wristband, or smart key comes into range of another UWB device, the devices start ranging. Watch this video to learn about the UWB ranging techniques, including single-sided two-way ranging and double-sided two-way ranging.
Learn more about how WUWB works at: www.firaconsortium.org/discov...
Speaker: Dr. Ardavan Tehrani, Wireless Standards Group, Facebook Reality Labs, FiRa Consortium Marketing Working Group

[@user-xe3mx8yl8b]

What is the limit on the round trip time (T_Loop) and on the reply time (T_Reply)?
Is it theoreticaly possible (assuming the UWB encryption key is known) to chatch the responce decrypt it, increase the T_Reply, encrypt and send back to the initiator.
This way the calculated ToF would be lower than the real ToF.

[@aabdev]

How to derive a formula on 3:28

[@salaikyonekyone12]

you can find it in Section 2.3 of the paper entitled
"Numerical and Experimental Evaluation of Error Estimation for Two-Way Ranging Methods"