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

John Smith deltafoxtrot256 at gmail.com
Sat Feb 6 01:18:06 GMT 2010

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.


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