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Chapter 4: NEWChapter 4: NEW

DEVELOPMENTDEVELOPMENT -- GPSGPS

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What is GPS?History

System segments

WorkingApplicationsConclusion

GPS : Convenient andnecessary tool for modern

life

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GLOBAL POSITIONINGGLOBAL POSITIONINGSYSTEMSYSTEM

eThe Global Positioning System/GPS is a constellation of 24 well-spaced satellites that orbit the Earth 11,000 miles

and make it possible for people with ground receivers to

pinpoint their geographic location.́  

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History:History:

y Originally established by the U.S. Department of Defense ,the first GPS satellite was launched in 1978.

y The first 10 satellites (1978~1984) were called Block I.

y President Ronald Reagan declassified the GPS system

y

From 1989 to 1993, 23 production satellites, called Block II were launched.

y The launch of the 24th satellite in 1994 completed thesystem.

y Korean Airline flight 007 got lost over Soviet territory and was shot down by Soviet fighters.

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GPS System Segments:GPS System Segments:

y The satellite constellationy The operational control segment (OCS)

y The user receiver equipment

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How GPS System Works:How GPS System Works:

y The operational control segment (OCS) maintains thesatellites & tracks in space. The OCS monitors satellitehealth and signal integrity and maintains the orbital

configuration of the satellites.

y Lastly, the user receiver equipment performs thenavigation, timing or other related functions (e.g.surveying).

y

The satellites in orbit provide the ranging signals anddata messages to the user equipment.

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Uses of GPS TechnologyUses of GPS Technology

y Location- determining a basic position.

y Navigation - getting from one location to another .

y Tracking - monitoring the movement of peopleand things.

y Mapping- creating maps.

y Timing - providing precise timing .

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Application of GPSApplication of GPSTechnology:Technology:

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Car GPSCar GPSSystemSystem

y exactly positionsthe car , then checkit with a map like

Google Earth.y Alarm SMS sent tocar owner's mobilephone and thecenter if the car isshocked, or car

door is opened, orengine is started,or the car's poweris cut off illegally.

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GPS for Motor bikersGPS for Motor bikers

user-friendly control,touch-screen panel

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Detachable Bicycle GPS SystemDetachable Bicycle GPS System

y State-of-the-artsatellites in spacetracking your every

terrestrial move

y lets you know exactly how far you'vetravelled, how fast,how high, how low 

and where you arenow!

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GPS Wristwatch

y Displays runner¶sspeed, distance, pace,time, laps in large

display 

y Charts yourroute as you runor walk, and can

point you back to start

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GPS FishPositioningSystem

y  be attachedexternally or

implanted into fish.

y allows the scientistto track the

migratory route of the fish through a whole year cycle

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A SLR  camerahaving GPS

unit

y Gives instant andtruly detailed location

information for aphotographic image

y allows automatic geo-

tagging of useful geo-data such as country,city, street and pointof interest

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GPS System inGPS System inboatsboats

 V ery specific informationrelated to the sea beds,

navigable channels andother useful maritimedata allows boat captainsto navigate safely.

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Large digital message boards at train

stations will tell ridersexactly when the nexttrain will arrive at theplatform

Real Time Train PredictiveReal Time Train Predictive

Arrival GPS SystemArrival GPS System

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Buses thatBuses that

use GPSuse GPSSystem:System:

The GPS

coordinates arebeamed to thesmart stop whichannounces whenthe next bus willarrive.

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GPS System to beGPS System to beAvailable in Children¶sAvailable in Children¶s

ShoesShoesy set up alerts if the wearer of 

the device wanders outsideor inside of a designated

area.

y military troop tracking,elderly care, law 

enforcement, personalexercise monitoring, andeven uses in sports training

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GPS device canGPS device can

tag yourtag yourteenagerteenager

y exactly pinpoints acarrier¶s location through aglobal positioning systemaccessed by computer or

mobile phone.

y size of a large matchbox

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A GPS deviceA GPS device

for your dogsfor your dogs& pets& pets

The system linked

to a GPS-enabledcollar for yourdog which helpsus to locate it.

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Conclusion:Conclusion:

GPS is now being used across the world,the list of uses is only set by therequirements we can think of applying

GPS, and we find it being used more andmore in our daily lives. So it would beextremely hard to perform many traveland industry tasks without it.

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