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By

Shubham GOEL

ECE-III year

xyz

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IntroductionAutomatic Vehicle Locator (AVL) is a computer

based vehicle tracking system

The actual real time position of each vehicle isdetermined and relayed to a control center

AVL systems include: computer -aided dispatchsoftware, mobile data terminals, emergency alarms,and digital communications

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What is AVL Technology?AVL systems use satellite and land communications to

display each vehicle's

location status

heading

speed on the computer'sscreen.

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AVL System

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Navigation Technologies

There are four types of NAVIGATIONTECHNOLOGIES:-

Global Positioning System

Dead-Reckoning System

Signpost Systems

Radio Navigation Systems

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About GPS: The Global Positioning System (GPS) is a

space-basedsatellite navigation system thatprovides location and time information in allweather, anywhere on or near the Earth, wherethere is an unobstructed line of sight to four ormore GPS satellites.

GPS Satellite

http://en.wikipedia.org/wiki/Satellite_navigationhttp://en.wikipedia.org/wiki/Positioning_systemhttp://en.wikipedia.org/wiki/Positioning_systemhttp://en.wikipedia.org/wiki/Satellite_navigation

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MORE ABOUT GPS.. There are six different orbiting

patterns that the GPS satellites

follow, making a complete triparound the earth every 12 hours.

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MORE ABOUT GPS..The best position for any

GPS antenna is generally

as high as possible with the

best unrestricted view.

The information regarding

the location of the transitvehicle is calculated

by TRILATERATION method.

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TRACKING SYSTEMS There are two types of tracking systems

PASSIVE TRACKING

REAL TIME TRACKING

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WORKING OF A GPS BASED AVL:

GPS SATELLITES

RADIO SYSTEMS

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Working

continued.

COMMUNICATIONCENTER

DISPATCH SECTION

CUSTOMER ASSISTANCEUNIT

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A GPS BASED AVL sYSTEM

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MAPPING

Maps allow a tangible, understandable view of

vehicles location and will also allow operators toapply local knowledge.

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CURRENT LIMITATION OF

EXISTING METHOD

User compulsory needs a computer to access lost

vehicle information.

User cannot decode GPS coordinates by himself.

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AVL Benefits:

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Uses Of AVLVehicle location display in real-time.

Recording of arrival and departure times (proof of

delivery etc).

Monitoring of driving practices (speed).

Alerts if vehicle leaves or enters a defined area.

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Applications Of AVL In Military

Track Anything

In Cargo

In cargo

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Conclusion By using GPS we can track the location of the vehicle

It is a cost effective and efficient technique

It gives protection to the vehicles and also the accidentalerts

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