[RyJones]

if I put two of these far-ish apart, can I get better 3d/4d data?

[butvacuum]

of course? not working directly together maybe, but put them at right angles and you get depth without relying on signal amplitude analysis.

did I misunderstand the question?

[RyJones]

Something like this: https://youtu.be/YZkLQsv3huo

[butvacuum]

that adds a time dimenstion- not a spacial one. I'm no expert- but I'd expect a quadrf to not even need a time dimension for that case (rf transmitters are very rarely buried among noise in a spacial dimension.). my terms might be wrong, but I doubt the concepts are.