I saw something recently on TV (sorry I didn't record it, just saw bits and pieces) that they can use IR/Thermo to tell the difference between identical twins. Apparently what's underneath is very different, so it takes the facial recognition software that casino's employ (the ones on TV anyhooo
) one step further.
Millimeter Waves can see thru items in some ways functioning like x-rays, so they can see weapons secreted under clothing, both passive and active. I believe the resolution is so good, you can also look into the rubble of a building and tell if someone is still breathing. This depends on the makeup of the building. Metal can't be seen thru.
Cement and bricks can. I think Anthony mentioned that chickenwire would cause problems, & Millimeter Waves are part of thermo. I've heard it called "through the wall radar".
Ultra Wide Band (UWB) also offers no multi-path interference of traditional radio, so that you can have many, many items utilizing it in the same area without interference. Apparently it's great for tracking where things are (people, assets, etc) very precisely. I've seen things on the Web where air craft carriers are testing UWB wireless for internal comm. I believe UWB is part of the millimetric band too. I believe range is limited however.
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Millimeter Waves can see thru items in some ways functioning like x-rays, so they can see weapons secreted under clothing, both passive and active. I believe the resolution is so good, you can also look into the rubble of a building and tell if someone is still breathing. This depends on the makeup of the building. Metal can't be seen thru.
Cement and bricks can. I think Anthony mentioned that chickenwire would cause problems, & Millimeter Waves are part of thermo. I've heard it called "through the wall radar".
Ultra Wide Band (UWB) also offers no multi-path interference of traditional radio, so that you can have many, many items utilizing it in the same area without interference. Apparently it's great for tracking where things are (people, assets, etc) very precisely. I've seen things on the Web where air craft carriers are testing UWB wireless for internal comm. I believe UWB is part of the millimetric band too. I believe range is limited however.