| ▲ | amelius 3 days ago |
| Can this be used to monitor people through walls? Could it be used as a "life" detector in collapsed structures after earthquakes? |
|
| ▲ | ethan_smith 3 days ago | parent | next [-] |
| 60GHz 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 3 days ago | parent [-] | | Why do you say 24GHz and not, e.g., 100MHz? (Apart perhaps from it being within a reserved band). | | |
| ▲ | mikewarot 3 days ago | parent | next [-] | | An 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 2 days ago | parent | prev [-] | | Update: 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. |
|
|
|
| ▲ | Catbert59 3 days ago | parent | prev [-] |
| 60 GHz is pretty much Line of Sight. If you can't see it - it will not work. |
