[srean]

Reflections will pose a problem though.

Two receivers of the same signal may not be from the same proximate source. One could from the original antenna the other from a reflection. Both could be reflected but by different reflectors. Even if the proximate source was the same for both the receivers, triangulation might yield the location of a virtual image of the original source.

BTW I am just going by geometry and may be way off because radiowaves behave quite differently compared to visible light.

One might need effectively the inverse of beamforming to nail it.

[rustyhancock]

Exactly I have friends who have had voice contacts reflecting off aurora at VHF

[ted_dunning]

KP4MD detected wingtip vortices from reflected VHF signals.

https://www.cfmilazzo.com/aircraft-wingtip-vortices

[srean]

That made my day. Thanks for the laughs.