[talk-au] Autonomous car that uses GPS...

[Liz]

On Sat, 6 Feb 2010, John Smith wrote:
> Shelley knows exactly where she is on the road by using a differential
> GPS. Unlike a standard GPS system, hers corrects for interference in
> the atmosphere, showing the car's position on the Earth with an
> accuracy of about 2 centimeters. Shelley measures her speed and
> acceleration with wheel-speed sensors and an accelerometer, and gets
> her bearings from gyroscopes, which control equilibrium and direction.
> 
> "The computer puts all this information together and then compares it
> to a digital map to figure out how close the car is to the path that
> we want it to take up Pikes Peak," Gerdes said.
> 
> http://news.stanford.edu/news/2010/february1/shelley-pikes-peak-020310.html
> 

So they must have spent enough money to put a DGPS base station up on the 
mountain