Earlier quoted context omitted.
>If it was easy to spot and precisely track small objects at 10m, That's not the claim I'm making. I agree that this chip won't do the gesture recognition at 10m, but I'm quite convinced that it can pick up human movement signal if they try to do so. >I've been involved in the design of mmwave radars I don't have this level of expertise. But I'll be really surprised if we couldn't reach the same levels of amplificati…
Your second quote seems out of context and doesn't occur in the paper you cite. Your first quote says "sensing range below 10m". Yes, it is possible to make long range 60GHz systems-- largely through antenna gain and lenses. Yes, we could build an entirely different radar to track peoples' gross movement--- and could have 20 years ago, too-- but that has largely nothing to do with the original system or your original…
> Suggesting one can go 10x as far (10000x power alone) and through walls is... creative.
I was going for conservative. Typically thinking about open-space work environment. The device doesn't need line of sight like a camera would, it can be in your coworker pocket and listening to you.
They are well founded and doing their own radio chips, I give them the credit they deserve and assume they can replicate a somewhat similar technology (6Ghz radar).
It is better to use a logarithmic scale. The 10000x power (40dB gain) doesn't mean you will need to emit 10000x more power, in practice you will amplify the signal, by focusing the beam via antenna design, and amplifying which theoretically you can do relatively easily as long as you are above the Cosmic Microwave Background Radiation noise. Then you need to do some trickery to trade bandwidth for signal strength (which they do : FMCW). Then you still can integrate over time. A radar typically scan its whole surrounding, but if instead you chose to focus it at one place you can gather for longer.