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Global Positioning Systems

Global Positioning Systems. Jessie Fowls Boise State University Operations Management – 345. Topics That Will Be Covered. GPS definition Brainstorming Exercise GPS basic breakdown How GPS works Real World Example Application Exercise Summary. GPS Definition.

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Global Positioning Systems

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  1. Global Positioning Systems Jessie Fowls Boise State University Operations Management – 345

  2. Topics That Will Be Covered • GPS definition • Brainstorming Exercise • GPS basic breakdown • How GPS works • Real World Example • Application Exercise • Summary

  3. GPS Definition • Worldwide space-based radio navigation system consisting of as constellation of 24 satellites and their ground stations.1

  4. Brainstorming Exercise • How could GPS be used in your company? • What areas of your company would benefit most from GPS?

  5. GPS Basic Breakdown • Consists of 24 Earth-orbiting satellites • Solar cells power each satellite • Antennas transmit timing info. • Operated and maintained by U.S. Department of Defense

  6. GPS Basic Breakdown • GPS Satellite Facts2 • Name: Navstar • Altitude: 10,900 Nautical Miles (12,660 Miles) • Weight: 1900 lbs (in orbit) • Size: 17ft. with solar panels extended • Orbital Period: 12 hours

  7. GPS Basic Breakdown • Three components • Space: Satellites • Control: Master Control Station • User Segments: Receivers

  8. How GPS Works • Five Logical Steps3 • Triangulating or Trilaterating • Measuring Distance • Getting Perfect Timing • Satellite Positions • Error Correction

  9. How GPS Works • Triangulation or Trilateration • Using the distance of 3 satellites measured from your position anywhere on the planet

  10. How GPS Works • Trilateration Illustration Suppose you knew you were • 625 miles from Boise • 690 miles from Minneapolis • 615 miles from Tucson

  11. How GPS Works 625 miles 690 miles Boise Minneapolis Denver 615 miles • Determines your location to be somewhere near Denver.4 Tucson

  12. How GPS Works • Measuring Distance - Coordinates of your location • Longitude and Latitude • Altitude

  13. How GPS Works • Getting Perfect Timing • Radio Signal • Atomic Clock

  14. How GPS Works • Satellite Positions • High Orbits • Careful Monitoring

  15. How GPS Works • Error Correction • Types of error (slows signal) • Charged particles in ionosphere • Water vapor in troposphere • Ground obstructions

  16. How GPS Works • Error Correction • Minimizing Error • Predicting delay • Comparing signal speeds • “Dual frequency”

  17. Real World Example • U.K. Coastal Erosion5 • Problem in past and present • GPS is used to prevent destruction of structures

  18. Real World Example • Monitor coastline with GPS • Technology used to predict risky areas • Information used for future shoreline management planning

  19. Exercise • List some possible uses for GPS in general. • More specifically, for what types of things might your company use GPS?

  20. Summary • GPS: Global Positioning Systems • Determines precise location anywhere on Earth • Uses advanced technology and an easily understandable method for calculating location. • Can be used in nearly every aspect of business, environment, recreation, education, etc…

  21. Summary “GPS is to position what the clock was to time”6

  22. Bibliography • “All About GPS” http://www.trimble.com/gps • “Global Positioning System.” Microsoft Encarta Encyclopedia. 2002 ed. • Hartman, Julie. “Combination of technologies improves coastal erosion measurements.” Civil Engineering Oct. 2001: 33-35. • “How GPS Receivers Work” http://www.howstuffworks.com/gps.htm • Kaplan, Elliott D. ed. Understanding GPS: Principles and Applications1st ed. Boston: Artech House, 1996. 487.

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