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 _______________________________________________ Talk-au mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-au
