WELCOME….WELCOME….

The Global Positioning System The Global Positioning System (GPS)(GPS)

GPS: EvolutionGPS: Evolution

Originally developed for Originally developed for the military during 1970’sthe military during 1970’s

Made available for Made available for Civilian welfare after 1984 Civilian welfare after 1984

Satellite based navigation system that determines Satellite based navigation system that determines position anywhere on earthposition anywhere on earth

How does GPS Work :How does GPS Work :

Consists of Three SegmentsConsists of Three Segments

How does GPS Work :How does GPS Work :The Control SegmentThe Control SegmentThere are five major ground stations around the worldThere are five major ground stations around the world

Colorado Springs, COMaster Control Monitor Station

HawaiiMonitor Station Ascension Island

Monitor StationDiego GarciaMonitor Station

KwajaleinMonitor Station

How does GPS Work :How does GPS Work :Space SegmentSpace Segment Consists of 24 Block II satellites Consists of 24 Block II satellites

Operated by the U.S. Air ForceOperated by the U.S. Air Force

How does GPS Work :How does GPS Work :Space SegmentSpace Segment

Each Satellite orbits Each Satellite orbits with a period of 12 with a period of 12 hours hours

At least 4-6 satellites At least 4-6 satellites are always "visible“ are always "visible“ fromfrom anywhere on anywhere on EarthEarth

How does GPS Work :How does GPS Work :User SegmentUser Segment

Measure and Measure and track signaltrack signal

Recover Recover navigational datanavigational data

Acquire GPSAcquire GPS signalssignals

Select one or more Select one or more satellites in viewsatellites in view

The receiver performs the following tasks:The receiver performs the following tasks:

How does GPS Work :How does GPS Work : User SegmentUser Segment

Handheld receivers for civilian useHandheld receivers for civilian use

Receivers for Military useReceivers for Military use

Receivers for Commercial and Receivers for Commercial and scientific usescientific use

End Of Part OneEnd Of Part One

Uses of GPS :Uses of GPS :NavigationNavigation Most Popular use of GPSMost Popular use of GPS

Provides drivers, sailors at sea and Provides drivers, sailors at sea and aircrafts with their current position and a aircrafts with their current position and a local maplocal map

Uses of GPS :Uses of GPS : NavigationNavigation

Provides the pilot Provides the pilot with accurate with accurate position data and position data and helps to keep the helps to keep the airplane on course airplane on course

Control towers can Control towers can easily locate a easily locate a particular airplane particular airplane

Uses of GPS :Uses of GPS :TrackingTracking

Used to locateUsed to locate pets, pets, criminals on parole,criminals on parole, school going children, etc.school going children, etc.

Uses of GPS :Uses of GPS : TimingTiming

Each satellite is equipped withEach satellite is equipped withan atomic clock.an atomic clock.

Provides timing which Provides timing which is accurate up to one is accurate up to one billionths of a secondbillionths of a second

Uses of GPS :Uses of GPS : MappingMapping and Surveyingand Surveying

Surveyors and map Surveyors and map makers use GPS for makers use GPS for precision positioningprecision positioning

Saves a lot of time Saves a lot of time and effortand effort

Uses of GPS :Uses of GPS :Scientific researchesScientific researches

Allowed scientists to perform Allowed scientists to perform newnew

types of geographic analysistypes of geographic analysis

Geologists Geologists

Ecologists Ecologists

Biologists Biologists

End Of Part TwoEnd Of Part Two

Looking Ahead :Looking Ahead : Has been adapted to AgricultureHas been adapted to Agriculture

GPS is expected GPS is expected to to bring a lot more bring a lot more ease ease and and efficiency to efficiency to irrigation and farmingirrigation and farming

Looking Ahead :Looking Ahead : On the drawing board On the drawing board

GPSGPS Fleet Management – Fleet Management – Intelligent Transportation SystemsIntelligent Transportation Systems

Atmospheric SensingAtmospheric Sensing

Looking Ahead :Looking Ahead :Engineering and ConstructionEngineering and Construction

Automated Automated Increases machine Increases machine ConstructionConstruction productivityproductivityEquipmentEquipment Reduces Reduces engineering costsengineering costs

Looking Ahead :Looking Ahead :Other ApplicationsOther Applications

More accurate andMore accurate andaffordable systemaffordable system

Integration of GPS inIntegration of GPS inevery cell phoneevery cell phone

Intelligent RailroadsIntelligent RailroadsStudying earthquakesStudying earthquakes Public Safety

Conclusion:Conclusion:

The future of GPS appears to be virtually The future of GPS appears to be virtually unlimitedunlimited

Thank YouThank You