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eComm 2011, San Francisco  Alternatives to GPS for Localization Leveraging Smart Phones. June 29th 2011<br />Slide 2 of  1...
Location Applications<br />Monitoring<br />Tracking<br />Assisted Living<br />Targeted advertising<br />Social Networking<...
A quarter of all USA wireless phone users have utilized LBS</li></ul>Slide 3 of  16<br />
Satellite Navigation Systems<br />USA: GPS<br />European Union: Galileo (2014)<br />€ 5.3 billion<br />Russia: GLONNAS (20...
 France: Doris
India: IRNSS (2014)
Japan: QZSS (2013)</li></ul>Slide 4 of  16<br />
GPS Accuracy ~ 6 meters<br />GPS errors’ sources:<br />Ionospheric effects (±5meters), <br />Shifts in the satellite orbit...
Main Drawbacks of Satellite Systems<br /><ul><li>Power
Coverage</li></ul>Slide 6 of  16<br />
Satellite Navigation Systems<br />USA: GPS<br />European Union: Galileo (2014)<br />€ 5.3 billion<br />Russia: GLONNAS (20...
 France: Doris
India: IRNSS (2014)
Japan: QZSS (2013)</li></ul>Slide 7 of  16<br />
Alternatives to GPS<br /><ul><li> High Sensitivity GPS</li></ul>Advanced signal processing techniques.<br /><ul><li>Low ac...
 Inertial Navigation Units (acc + gyro)
Very expensive.
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Eladio Martin - Presentation at Emerging Communications Conference & Awards (eComm 2011)

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Transcript of "Eladio Martin - Presentation at Emerging Communications Conference & Awards (eComm 2011)"

  1. 1.
  2. 2. eComm 2011, San Francisco Alternatives to GPS for Localization Leveraging Smart Phones. June 29th 2011<br />Slide 2 of 16<br />
  3. 3. Location Applications<br />Monitoring<br />Tracking<br />Assisted Living<br />Targeted advertising<br />Social Networking<br /><ul><li>10% of all the iPhone applications employ location information
  4. 4. A quarter of all USA wireless phone users have utilized LBS</li></ul>Slide 3 of 16<br />
  5. 5. Satellite Navigation Systems<br />USA: GPS<br />European Union: Galileo (2014)<br />€ 5.3 billion<br />Russia: GLONNAS (2011)<br />Most expensive project in Russian Federal Space Agency<br />China: Compass (2020)<br /><ul><li>Other regional satellite-based systems:
  6. 6. France: Doris
  7. 7. India: IRNSS (2014)
  8. 8. Japan: QZSS (2013)</li></ul>Slide 4 of 16<br />
  9. 9. GPS Accuracy ~ 6 meters<br />GPS errors’ sources:<br />Ionospheric effects (±5meters), <br />Shifts in the satellite orbits (±2.5 meters), <br />Satellite clock errors (±2 meters), <br />Multipath effects (±1 meters), <br />Tropospheric effects (±0.5 meters), <br />Calculation and rounding errors (±1 meters)<br />Slide 5 of 16<br />
  10. 10. Main Drawbacks of Satellite Systems<br /><ul><li>Power
  11. 11. Coverage</li></ul>Slide 6 of 16<br />
  12. 12. Satellite Navigation Systems<br />USA: GPS<br />European Union: Galileo (2014)<br />€ 5.3 billion<br />Russia: GLONNAS (2011)<br />Most expensive project in Russian Federal Space Agency<br />China: Compass (2020)<br /><ul><li>Other regional satellite-based systems:
  13. 13. France: Doris
  14. 14. India: IRNSS (2014)
  15. 15. Japan: QZSS (2013)</li></ul>Slide 7 of 16<br />
  16. 16. Alternatives to GPS<br /><ul><li> High Sensitivity GPS</li></ul>Advanced signal processing techniques.<br /><ul><li>Low accuracy
  17. 17. Inertial Navigation Units (acc + gyro)
  18. 18. Very expensive.
  19. 19. Radio Fingerprinting</li></ul>Slide 8 of 16<br />
  20. 20. WiFi Fingerprinting in the iPhone<br />Slide 9 of 40<br />
  21. 21. Outdoor WiFi Fingerprinting in Smart Phones<br /><ul><li>Accuracy depends on density of Access Points</li></ul>Typical error: 50 meters.<br /><ul><li> Example: WiFi-based Localization by Google</li></ul>Slide 10 of 16<br />
  22. 22. Radio Fingerprinting<br />Slide 11 of 40<br />
  23. 23. Cellular Fingerprinting<br /><ul><li>Existing systems need Dedicated Hardware
  24. 24. Smart Phones:
  25. 25. Granularity is poor and Hardware dependent
  26. 26. Slow refreshing rate
  27. 27. Only RSSI information from the same SIM card operator </li></ul>Slide 12 of 16<br />
  28. 28. Fingerprinting with other Technologies<br /><ul><li>Bluetooth
  29. 29. Accuracy of up to 1.2 meters
  30. 30. Dedicated Hardware
  31. 31. Conventional Radio
  32. 32. Dedicated Hardware
  33. 33. Low accuracy (urban suburb)
  34. 34. Digital TV
  35. 35. Dedicated Hardware
  36. 36. Zigbee
  37. 37. Dedicated Hardware</li></ul>Slide 13 of 16<br />
  38. 38. State-of-Art in WiFi Fingerprinting<br /><ul><li>Radar, by Microsoft
  39. 39. Accuracy 2 – 3 meters
  40. 40. Dedicated Hardware
  41. 41. Ekahau
  42. 42. Accuracy 1 – 3 meters
  43. 43. Dedicated Hardware</li></ul>Slide 14 of 16<br />
  44. 44. Improvements that Smart Phones can bring to Fingerprinting<br /><ul><li> Integrate both the online and offline phases in fingerprinting
  45. 45. Avoid errors due to differences in antenna characteristics and measurement schemes between different equipments
  46. 46. e.g. 10 dB between Dell Latitude laptop and Motorola Droid phone
  47. 47. Leverage accelerometer (gravity vector) and magnetometer (orientation)
  48. 48. Orientation of phone helps enhance the localization accuracy</li></ul>Slide 15 of 16<br />
  49. 49. WiFi Fingerprinting with Smart Phones<br />Slide 16 of 40<br />
  50. 50. Stride Length Estimation with Wavelet<br />Slide 17 of 40<br />
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