3 ms·
Can this be used to monitor people through walls? Could it be used as a "life" detector in collapsed structures after earthquakes?
by amelius 1y ago
Can this be used to monitor people through walls?
Could it be used as a "life" detector in collapsed structures after earthquakes?
- Catbert59 1y ago60 GHz is pretty much Line of Sight. If you can't see it - it will not work.
- ethan_smith 1y ago60GHz is actually poor for through-wall detection as this frequency is heavily attenuated by building materials - lower frequencies like 24GHz or UWB radar would be more suitable for both applications you mentioned.
- amelius 1y agoWhy do you say 24GHz and not, e.g., 100MHz? (Apart perhaps from it being within a reserved band).
- mikewarot 1y agoAn antenna large enough to work at 100 mhz would be impractical. That's a wavelength of 3 meters, and incapable of reliable detection of objects less than about 0.7 meters in all dimensions (1/4) wavelength, not to mention the required size of the antenna array
- amelius 1y agoUpdate: chatgpt told me that the wavelength (3m) is too large to detect humans, antenna size would be impractical, more power would be needed for transmission, and reflections are more of a problem than with higher frequencies.