Direction of Arrival approximation for 2.4 GHz transmitters

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InvertingOpam
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Direction of Arrival approximation for 2.4 GHz transmitters

Post by InvertingOpam » Tue Jan 14, 2020 7:45 pm

I have been playing with my kerberosSDR for a few months now and it has been a great learning experience. I have been thinking if this same process can be replicated at 2.4Ghz wifi frequency to detect the direction of wifi networks or 2.4Ghz rf remote controller. If I were to have a 4 chohorent sdr rx tuned ar 2.4GHz will this be replicable?

rtlsdrblog
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Re: Direction of Arrival approximation for 2.4 GHz transmitters

Post by rtlsdrblog » Wed Jan 15, 2020 5:32 am

Yes it certainly could work at 2.4 GHz too, if the coherent hardware support was there for that frequency. Kerberos can only go up to ~1.7 GHz so that's a no go.

It may be possible to use Kerberos at 2.4 GHz with a downconverter. As long as the 4x downcvonerter clocks are all shared with one another it should work.

WiFi could be difficult though, because (correct me if i'm wrong) I believe WiFi packets are interleaved on a channel with time slots, meaning that it would be difficult to differentiate one transmission from another without looking at the WiFi packet data itself. Another issue is that the short bursts of packets make DFing difficult. If you could guarantee one device only on a channel, and sufficient packets to saturate the channel, then it would be easier.

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