The system consists of three units attached to the roof of each vehicle. Two high precision GNSS antennas are separated by 1 meter and located at the front and rear of the roof to give accurate body heading, dynamic heading, and speed. Antennas are then routed into a data logger combined with a transmitter, capable of transmitting signals up to 1khz, producing over 900 samples every second to be analysed by our software.
The drift angle is produced by subtracting body heading from dynamic heading, angle between the velocity vector and body of the vehicle. It is then divided by the angle coefficient of 10 or higher during unstable weather and multiplied by the speed, also divided by a round figure of 10. Two values are multiplied by each other every four meters the car travels and summed up to produce the final score for each run.