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This is a SAR satellite which uses radar to produce altitude map. I thought the resolution would be bad but it is really good at up to 16cm. This isn't going to
by ianburrell 2y ago
This is a SAR satellite which uses radar to produce altitude map. I thought the resolution would be bad but it is really good at up to 16cm. This isn't going to read anything since it isn't a camera.
The other thing is that commercial satellites are lower resolution than military ones. The giant ones are super expensive, and commercial users don't need to read license plates. They would much rather have multiple satellites that visit same spot every day.
- KeplerBoy 2y agoYou don't need a camera to read license plates since the lettering is embossed. You absolutely could read license plates in SAR images, just not in current space borne systems. Checkout this paper to see what's possible with ground- and airborne SAR systems (scihub is your friend): https://ieeexplore.ieee.org/abstract/document/7461591 https://ieeexplore.ieee.org/abstract/document/7461591
- jjk166 2y agoYour wavelength would have to be small compared to the size of the embossing. At that point you're getting into the infrared range.
- KeplerBoy 2y agoSure, some call it Infrared, some call it terahertz radar. The linked paper talks about 300 GHz SAR, which is generally the lower limit of infrared.