# Results from tests at New Hampshire International Speedway

Data collected while on the three day course at the Skip Barber Racing School driving the Formula Dodge cars.
Course funded by the MIT CC++ Program

Chan in #75 and Jon in #46

Project goal: Develop a GPS sensing system that can provide high accuracy tracking
(~ 5 cm, position, attitude to within 1 deg) using Carrier-Phase Differential GPS (CDGPS).

Data could be used for:
• Real-time car / engine / tire performance monitoring
• Driver training
• Post-drive analysis of track position and speed.
Data has already been collected at MIT to demonstrate the proof of concept so we now were ready
for testing at racetrack.

Faculty Contacts: Jonathan How , John Hansman , Betty Lou Mcclanahan

Students: Chan Woo Park , Nick Pohlman and Phil Ferguson

Driving Instructor: Nick Longhi

### Hardware

 Two 2 GPS antennas were mounted on the car. One on the nose of the car Second on top of the roll bar behind the driver's head The modem antenna is also attached to the roll bar

The data from the GPS Receiver (Modified Zarlink design) was collected by both antennas and then broadcast
in real-time via the modem to the ground station where it was compared with the data collected by the antenna
located at the start/finish line

### Track Layout

 Track layout - map from Skip Barber School More details with pictures

### Some Results:

 Plot showing the position, velocity, and attitude of the Nick Longhi durng a test run. Nick intentionally skidded the car through the corners. So you can see a large difference (~10 degs) between the velocity vector and the heading. Nick Longhi skidding though the infield turns 1 and 2 (not the banked track) Nick Longhi skidding though the infield turns 7 and 8 Another interesting way to visulaize the speed around the track. Plots the speed vertically at each position. Nick Longhi started from a standing start, and had to slow down to cut through at turn 3/6 Plot of Jon How's speed. The x-axis is only approximate time because of some problems with the old modem. The plot clearly shows the correct trends through turns 8/9 and turns 1/2/3 Plot of Jon How's speed versus track position.

### Other groups working on similar projects:

Back Professor How's page.

December 9, 2002