I finally got around to thinking about 3-D beamforming, ported a branch of my beamformer and wrote up a quick "simulator" to test it -- it's a lot harder to view this than the 2-D images I posted a while back, but I exported it as a point-cloud and opened it with Blender (nice!).

This is the 3-D render of a 1-D line of antennas spaced a quarter wavelength apart on the X axis -- I expected to see a torus (and did!)

#hztools