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Global Positioning Systems

This course covers the fundamentals of Global Positioning Systems (GPS), including its definition, basic components, and operational mechanics. Participants will engage in brainstorming exercises to explore practical applications of GPS in their companies. Learn about the constellation of satellites, the principles of triangulation, timing accuracy, and error correction. Real-world examples, such as GPS's role in coastal erosion management, will illustrate its relevance. By the end of the course, attendees will understand how GPS can enhance business operations and decision-making.

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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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