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ECE 191 Group 4 Autonomous Wi-Fi Sniffer RC Truck ‘GIZMO’

ECE 191 Group 4 Autonomous Wi-Fi Sniffer RC Truck ‘GIZMO’. Sponsor CAL-IT 2 Mentors Javier Rodriguez Molina Don Kimball Group Members Dan Curcio Anson Hsu. Agenda . Current progress (Gantt chart) Completed Tasks – Week 8 Technical Content Wireless network scanning resolution

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ECE 191 Group 4 Autonomous Wi-Fi Sniffer RC Truck ‘GIZMO’

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  1. ECE 191 Group 4Autonomous Wi-Fi Sniffer RC Truck ‘GIZMO’ Sponsor CAL-IT2 Mentors Javier Rodriguez Molina Don Kimball Group Members Dan Curcio Anson Hsu

  2. Agenda • Current progress (Gantt chart) • Completed Tasks – Week 8 • Technical Content • Wireless network scanning resolution • Overcome GPS driver problems • Demo GPS program operation • Goals for next week

  3. Gantt Chart

  4. Tasks Completed • Met with Brian Braunstein for assistance in GPS driver troubleshooting (Both) • Research 802.11b technical specifications (Anson) • Started on web interface (Both) • PHP tutorial • Matlab testbed • Implemented larger CF card for data storage (Dan) • GPS and Kismet loaded on Soekris (Both)

  5. IEEE 802.11 sampling frequency • 802.11 b/g run on 2.4GHz • Nyquist’s Theorem – sample at twice the frequency (4.8Ghz) • Wavelength (sampled) = 6.25cm! Image courtesy ofplato.asu.edu

  6. Tradeoff: Full signal acquisition vs. Acquisition time • An full survey of a 20m by 20m area at 1 sample/second would take ~4 months. • Possible solution: Interpolation • Take samples at a more realistic interval • Access pts – typical range of 45m indoors • Assume the signal doesn’t change drastically between samples

  7. CF Card Storage Constraints • The Soekris board was using a 512MB CF card for OS and data storage • With only ~30MB free, a working implementation would require ample space for log files • Migration to a 1GB CF card will allow much needed space for storing data

  8. Goals for Next Week • Configure Kismet • Combine data log files • Complete web interface • Perform field testing • Prepare for final presentation/paper

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