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.