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Cell Towers Can Double as Cheap Radar Systems for Ports and Harbors (2014)

(spectrum.ieee.org)
137 points transpute | 2 comments | 29 Jun 25 21:48 UTC | HN request time: 0.614s | source
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ImPostingOnHN ◴[29 Jun 25 22:20 UTC] No.44417068[source]▶
I spoke with a startup that is using 5G cell towers as radar. They said it is high-enough resolution to perform gait recognition.
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1. polalavik ◴[29 Jun 25 22:44 UTC] No.44417288[source]▶
There's a whole host of radar research using OFDM/ Wifi (I wrote a paper on the topic a while back where i implemented it with some software defined radios).

The best paper on the topic is Martin Brauns[1]. It's insanely comprehensive and easy to digest.

[1] https://publikationen.bibliothek.kit.edu/1000038892/2987095

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2. stefan_ ◴[29 Jun 25 23:32 UTC] No.44417612[source]▶
Doesn't the thesis assume you are the one sending out the OFDM signal, while the OP is about a passive radar thing? Maybe I got one of those mixed up.