A Moving-Objects Datablade

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A Moving-Objects Datablade

• Ouri Wolfson
• University of Illinois, Chicago
• wolfson_at_eecs.uic.edu

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Sources of Location-information

• GPS triangulation (satellites, indoors-sonar)
• Sensors e.g. toll booth that detects card in
  windshield.
• Triangulation in cellular architecture
• Cell-id
• Bluetooth (proximity positioning)
• Car navigation system, calendar system
• Scene analysis (camera location
  shape/size/direction of object gt object
  location)
• Location information varies in accuracy,
  reliability, precision, predictability.

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Moving Objects Database Technology
GPS
GPS
Wireless link
GPS

• Query/trigger examples
• During the past year, how many times was bus5
  late by more than 10 minutes at station 20, or at
  some station (past query)
• Send me message when helicopter in a given
  geographic area (trigger)
• Trucks that will reach destination within 20
  minutes (future query)
• Taxi cabs within 1 mile of here (present query)
• Make my PalmPilot geographically context aware

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Applications-- Summary

• Resource discovery-- e.g. Closest gas station
• Digital Battlefield
• Transportation (taxi, courier, emergency
  response, municipal transportation)
• Supply Chain Management, logistics
• Context-awareness, augmented-reality
• Location- or Mobile-Ecommerce and Marketing
• Air traffic control (www.faa.gov/freeflight)
• Mobile workforce management
• Currently built in an ad hoc fashion