Smartphone GPS is usually only accurate to about 4m (13 feet), so the idea of a smartphone navigation app capable of much more accurate spatial resolution piqued my interest enough to try it out. Then it got me wondering how the whole thing works.
Source: arstechnica.com
Lidar imaging has been around for almost as long as the technology it’s based on, the laser. But unlike its more famous cousin, radar, it was mostly used for research purposes. The reason scientists know so much about the density of aerosols in the upper atmosphere is largely due to the practice of shooting powerful lasers into the atmosphere and examining the return signal.
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We Germans have a huge problem. We invented the car. We have some of the best engineers and 11 of the 100 most valuable brands.
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