global positioning systems
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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. - PowerPoint PPT PresentationTRANSCRIPT
Global Positioning SystemsGlobal Positioning Systems
Jessie FowlsJessie FowlsBoise State UniversityBoise State UniversityOperations Management – 345Operations Management – 345
Topics That Will Be Topics That Will Be CoveredCovered
• GPS definitionGPS definition• Brainstorming ExerciseBrainstorming Exercise• GPS basic breakdownGPS basic breakdown• How GPS worksHow GPS works• Real World ExampleReal World Example• Application ExerciseApplication Exercise• SummarySummary
GPS DefinitionGPS Definition
• Worldwide space-based radio Worldwide space-based radio navigation system consisting of as navigation system consisting of as constellation of 24 satellites and constellation of 24 satellites and their ground stations.their ground stations.11
Brainstorming ExerciseBrainstorming Exercise
• How could GPS be used in your How could GPS be used in your company?company?
• What areas of your company would What areas of your company would benefit most from GPS?benefit most from GPS?
GPS Basic BreakdownGPS Basic Breakdown
• Consists of 24 Earth-orbiting Consists of 24 Earth-orbiting satellitessatellites
• Solar cells power each satelliteSolar cells power each satellite• Antennas transmit timing info.Antennas transmit timing info.• Operated and maintained by U.S. Operated and maintained by U.S.
Department of DefenseDepartment of Defense
GPS Basic BreakdownGPS Basic Breakdown
• GPS Satellite FactsGPS Satellite Facts22
– Name: NavstarName: Navstar– Altitude: 10,900 Nautical Miles (12,660 Altitude: 10,900 Nautical Miles (12,660
Miles)Miles)– Weight: 1900 lbs (in orbit)Weight: 1900 lbs (in orbit)– Size: 17ft. with solar panels extendedSize: 17ft. with solar panels extended– Orbital Period: 12 hoursOrbital Period: 12 hours
GPS Basic BreakdownGPS Basic Breakdown
• Three componentsThree components
1)1) Space: SatellitesSpace: Satellites
2)2) Control: Master Control StationControl: Master Control Station
3)3) User Segments: ReceiversUser Segments: Receivers
How GPS WorksHow GPS Works
• Five Logical StepsFive Logical Steps33
1)1) Triangulating or TrilateratingTriangulating or Trilaterating
2)2) Measuring DistanceMeasuring Distance
3)3) Getting Perfect TimingGetting Perfect Timing
4)4) Satellite PositionsSatellite Positions
5)5) Error CorrectionError Correction
How GPS WorksHow GPS Works
• Triangulation or TrilaterationTriangulation or Trilateration
– Using the distance of 3 satellites Using the distance of 3 satellites measured from your position measured from your position anywhere on the planetanywhere on the planet
How GPS WorksHow GPS Works
• Trilateration IllustrationTrilateration Illustration
Suppose you knew you wereSuppose you knew you were• 625 miles from Boise625 miles from Boise• 690 miles from Minneapolis690 miles from Minneapolis• 615 miles from Tucson615 miles from Tucson
How GPS WorksHow GPS Works
• Determines your location to be Determines your location to be somewhere near Denver.somewhere near Denver.44
Boise Minneapolis
Tucson
625 miles
615 miles
690 miles
Denver
How GPS WorksHow GPS Works
• Measuring Distance - Coordinates Measuring Distance - Coordinates of your locationof your location
– Longitude and LatitudeLongitude and Latitude
– AltitudeAltitude
How GPS WorksHow GPS Works
• Getting Perfect TimingGetting Perfect Timing
– Radio SignalRadio Signal
– Atomic ClockAtomic Clock
How GPS WorksHow GPS Works
• Satellite PositionsSatellite Positions
– High OrbitsHigh Orbits
– Careful MonitoringCareful Monitoring
How GPS WorksHow GPS Works
• Error CorrectionError Correction
– Types of error (slows signal)Types of error (slows signal)
• Charged particles in ionosphereCharged particles in ionosphere• Water vapor in troposphereWater vapor in troposphere• Ground obstructionsGround obstructions
How GPS WorksHow GPS Works
• Error CorrectionError Correction
– Minimizing ErrorMinimizing Error
• Predicting delayPredicting delay• Comparing signal speedsComparing signal speeds• ““Dual frequency”Dual frequency”
Real World ExampleReal World Example
• U.K. Coastal ErosionU.K. Coastal Erosion55
– Problem in past and presentProblem in past and present
– GPS is used to prevent GPS is used to prevent destruction of structuresdestruction of structures
Real World ExampleReal World Example
– Monitor coastline with GPSMonitor coastline with GPS
– Technology used to predict risky areasTechnology used to predict risky areas
– Information used for future shoreline Information used for future shoreline management planningmanagement planning
ExerciseExercise
• List some possible uses for GPS in List some possible uses for GPS in general.general.
• More specifically, for what types of More specifically, for what types of things might your company use things might your company use GPS?GPS?
SummarySummary
• GPS: Global Positioning SystemsGPS: Global Positioning Systems
– Determines precise location anywhere on EarthDetermines precise location anywhere on Earth
• Uses advanced technology and an easily Uses advanced technology and an easily understandable method for calculating understandable method for calculating location.location.
• Can be used in nearly every aspect of business, Can be used in nearly every aspect of business, environment, recreation, education, etc…environment, recreation, education, etc…
SummarySummary
““GPS is to position GPS is to position what the clock was what the clock was
to time”to time”66
BibliographyBibliography
• ““All About GPS” All About GPS” http://http://www.trimble.com/gpswww.trimble.com/gps• ““Global Positioning System.” Global Positioning System.” Microsoft Microsoft
Encarta EncyclopediaEncarta Encyclopedia. 2002 ed.. 2002 ed.• Hartman, Julie. “Combination of Hartman, Julie. “Combination of
technologies improves coastal erosion technologies improves coastal erosion measurements.” measurements.” Civil EngineeringCivil Engineering Oct. Oct. 2001: 2001: 33-35.33-35.
• ““How GPS Receivers Work” How GPS Receivers Work” http://www.howstuffworks.com/gps.htmhttp://www.howstuffworks.com/gps.htm
• Kaplan, Elliott D. ed. Kaplan, Elliott D. ed. Understanding GPS: Understanding GPS: Principles and ApplicationsPrinciples and Applications 1st ed. 1st ed. Boston: Boston: Artech House, 1996. 487.Artech House, 1996. 487.