Using technology that was originally developed by MIT and used by the military, autonomous vehicles can pilot themselves on the road through every kind of weather.
Ground-penetrating radar isn't new technology - they were using it in the first Jurassic Park movie for Pete's sake - but the idea of using it for autonomous vehicles is pretty new and a company called WaveSense thinks that GPR is just the ticket for helping self-driving cars navigate in bad weather.
The way it works is the WaveSense system will scan up to 10 feet below the surface of the road in order to lock on to stable ground. It can then use this data, combined with data from the vehicle's other onboard sensors, to build itself a map of subterranean features which is can then use to maintain its position on the road.
Obviously that is a super-simplified version of what is a technologically complex process, but the company says the system has been proven to work at an accuracy of up to 1 inch at highway speeds, regardless of road conditions.
Read more here
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