New 'road signature' tech is poised to accelerate autonomy, using localisation to improve the accuracy of driver assistance systems
This is where what autonomous vehicle engineers call ‘localisation’ comes in: the ability of a vehicle to know its exact position on a map with the same degree of accuracy as a human driver can. At least, that’s the theory. Bosch is tackling the problem by creating what it calls a ‘road signature’ using data gathered anonymously by. Data is sent to the VW cloud and shared with the Bosch cloud to keep multi-layer high-resolution maps updated.
In use, each car will analyse the environment it ‘sees’ with its on-board sensors and compare it with the image held by its digital twin. Bosch says this will allow cars to pinpoint their position on the road to a few decimetres relative to the map. Final positioning and obstacle avoidance is taken care of by the vehicle sensors and controls. This should mean that the localisation is accurate even in poor visibility.
The work is part of a two-pronged effort. The first is to improve SAE automation levels one to three, which covers ADAS to “conditionally automated systems”, where a vehicle can take control of most driving tasks but remains supervised by the driver. The second is level four – high automation where the car can perform all driving tasks but again remains supervised by the driver. That doesn’t mean we can expect to see fully autonomous level-four cars suddenly appearing in the near future.
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