Micro Listening Device Pinpoints Origins of Sniper Fire / Aircraft in Battle

How can it "measure the movement of individual air particles"?

I'm guessing that it measures the phase shift of received signals between measurements across the device and uses this to triangulate the origin of the sound. Their website doesn't give much insight.

A "battlefield" is an extremely noisy environment. I've worked on bots of such nature for a living and while the concept they describe makes sense at a modelling level, their process has very little field application (Dedicated IIR-ESP when you're getting shot at?). As far as pinpointing the location of gunfire goes, you are trained in Target Detection (TD) and have mounted systems like Boomerang on HMMVs. Trust me, when you've been out there long enough, you don't need a gadget to tell you what kind of gun the shot was fired from or the sort of aircraft approaching.

Cool concept nonetheless, I hope they publish more details.