4 ms·
The article says Luminar's advantage comes largely from wavelength: the longer wavelength they use is absorbed more strongly by water, meaning it won't penetrat
by bcatanzaro 9y ago
The article says Luminar's advantage comes largely from wavelength: the longer wavelength they use is absorbed more strongly by water, meaning it won't penetrate to the retina, even at higher power, which allows them to have much better range and resolution.
But what about the weather? The atmosphere often contains water. Does anyone know Luminar's performance in fog or rain?
I'm always worried self-driving cars will be set back by having so much of their development take place in sunny California.
- Symmetry 9y agoLuminar's lidar beams will be absorbed by water rather than scattered so fog will effectively seem black to it rather than white and it will be just as unable to see through rain or fog as normal lidar or your eye. Thankfully if it's going to be developed in SF they'll be getting a lot of experience with fog.
- dweekly 9y agoTrue. For details on relative absorption and scattering and performance on rangefinding at 905nm vs 1550nm see https://www.degruyter.com/downloadpdf/j/oere.2014.22.issue-3/s11772-014-0190-2/s11772-014-0190-2.pdf https://www.degruyter.com/downloadpdf/j/oere.2014.22.issue-3...