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A Moving-Objects Datablade

A Moving-Objects Datablade. Ouri Wolfson University of Illinois, Chicago wolfson@eecs.uic.edu. 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

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A Moving-Objects Datablade

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  1. A Moving-Objects Datablade Ouri Wolfson University of Illinois, Chicago wolfson@eecs.uic.edu

  2. 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 ==> object location) Location information varies in accuracy, reliability, precision, predictability.

  3. Moving Objects Database Technology GPS GPS Wireless link GPS Query/trigger examples: • During the past year, how many times was bus#5 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”

  4. 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

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