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UWB is used in the 803.15 WPAN (wireless personal area network) standards.

802.15 WPAN - It's kinda stalled for some time. And UWB really did get good press with some very promising features / performance back in the day.

If I remember they ended up using it in some system for firefighters that can 'see' through walls, and it might've been used for such a system in the army as well.

But overall UWB didn't deliver on it's promise.

UWB is making steady progress in active tracking systems and passive tracking systems. I work for a company that does active tracking: http://pluslocation.com/.

PLUS is an offshoot of Time Domain, http://www.timedomain.com/. Time Domain does radar; I don't think they do any active tracking (could be wrong though). IIRC Time Domain is the company that did the see-through-walls system.

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