车辆定位系统中英文对照外文翻译文献.docx

车辆定位系统中英文对照外文翻译文献.docx

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车辆定位系统中英文对照外文翻译文献

中英文对照外文翻译文献

（文档含英文原文和中文翻译）

原文:

BasedontheGPS,GPRS,GISandInternetvehiclepositioningsystem

Abstract

Thispaperintroducesanintegratedgeographicinformationsystem（GIS）,combinedwiththeapplicationofglobalpositioningsystem（GPS）,generalpacketradioservice（GPRS）andInternetvehiclepositioningsystem.Foraneedtostudyandmanagementofvehiclepositioningoftheenterprise,chooseasuitablevehiclepositioningsystemisveryimportant.Themainfeatureofthesystemistheuseofopengeographicinformationsystemplatformtoaccesstoresources,usingtheInternetbaseduserinterface,realizationofvehiclepositioninginformationupdate.ThesystemconsistsofGPSbasedpositioningdeviceofthevehicle,communicationserver,webserver,databaseserveranddesktopmapcomposition.Positioningdeviceinstalledinthevehicleinterior,throughtheGPSpositiontocollectreal-timeinformation,theinformationistransmittedtoacentraldatabasethroughGPRS.TheusercanthroughtheInternetinreal-timeshowthelocationofeachvehicle,andthenforallvehiclesmanagement.Vehiclepositionandotherrelatedinformationwillbedisplayedinthedesktopmapgeneratedbyanelectronicmap.Thissystemistheuseofinformationandcommunicationtechnologycombinedwitheachotherandform.Thesharpriseinfuelprices,thissystemwassuccessfullyusedonacompany'sresourcesforeffectivemanagementofgreathelp.

Keywords:

theglobalpositioningsystem（GPS）,generalpacketradioservice（GPRS）,vehiclepositioning,desktopmap,Internet,informationcommunicationtechnology.

1、Introduction：

Thisvehiclepositioningsystemtheintegrateduseofmoderninformationtechnologyandcommunicationtechnology,appliedtohavemorevehiclesenterprises,enterprisescanusethissystemforvehicletrackingandmanagement.

Thissystemconsistsofvehicletrackingdevice,thecentralserversystemandInternet.Throughthissystem,userscanusetheircomputercontroldesktopmap,andthenunderstandthegeographiclocationofthevehicleandotherrelevantinformation.

Thispaperfocusesonthedesignanddevelopmentofvehiclepositioningsysteminthe.However,thissystemhasalotofotherunits,includingthemanagementofsystemresources（drivers,vehicles）,andefficientuseof（vehicleallocationproblem）andreportgenerationandauditactivitiessuchaspartof.

Thesystemisdesignedtoservealargefleetofvehiclesorcomplexrequirementsoftheuseofenterprise.Workersmayneedfrequentuseofshorttrips,aswellassomelong-distancetravel.Somemayvisitashortperiodoftimecanbedetermined,andsometravelmayneedtomatchthecorrespondingdailyschedule.Employeesmaysometimesrequireextendedtripsoraparkinglot,butthevehiclerepairoftenmeettemporaryneeds.Theseissuesrequireamoreeffectivevehiclepositioningsystemtosolve,inordertomeettheaboverequirements,needadiversificationstrategy.Inordertoimprovethecompanyoverallproductivity,mustonallvehiclecentralizedmanagement.

Thispaperusesavarietyoftechniquestoachievethisgoal.Thefollowingexampleshows:

wecantakeavarietyofscienceandtechnologyarecombinedtosolvearealproblem.

2GPSandGPRSdefinition

2.1GPS

GPSEnglishcalledGlobalPositionSystem,throughasimpletranslationwewillbe:

"theglobalpositioningsatellitesystem"thisresults.Inthenineteenfiftiesyears,Americansfor30years,spent$about30000000000,theconstructionofsuchabrilliantandhugesystem,canbesaidtobeabrillianthistoryofspaceflight.

Figure1GPSnavigationsatellite

BuiltatthebeginningoftheglobalpositioningsystemGPSinspirationwasborninmeridianinstrumentsatellitenavigationsystem,andradialnavigationsystemcannotdisplaythefixed-pointelevation,positionaccuracyandthepositioningtimeunsatisfactoryshortcomingsledtothebirthofGPS.

Thissystemconsistsof24satellites,in11hours,58dividedintoperiodicuninterruptedaroundtheearth,asweprovidepictures,data.Althoughsome12000kmaltitude,canbeinsightintoeverycorneroftheearth.Therefore,atfirst,thissetofequipmentisonlyusedinmilitaryandcivilfieldsrelatedtoimportantnationalinterests,givenitsgreatvaluetolaterreallyusedasacivilian,andcompletelyfree.Now,GPSistheproductofmoreemergeinanendlessstream,GPSmobilephone,carGPS,GPSmodule.Then,thelatitudeandlongitudeoftheconceptisalsomoreandmorebefiled,soweshuttleintheearthwillbemoreeasily.

2.2GPRS

GPRSGerneralPackerRadioServiceEnglish,Chinesetranslationforthecommunicationpacketradioservice.AtpresentthedomesticGPRScarrierisChinamobilecommunication,weoftensendMMSwhenIneedit,saysimply,itisakindofinfinitedatatransmissiontool.

Specifically,GPRSintheexistingGSMsystemdevelopedoutofanewpacketdatabearerservice.GPRSandGSMsystemthemostfundamentaldifferenceis,GSMisacircuitswitchingsystem,andGPRSisapacketswitchsystem.GPRSisespeciallysuitableforintermittent,abruptorfrequent,smallamountsofdatatransmission,butalsosuitableforoccasionallargevolumedatatransmission.WecanunderstandtheGSMGPRStoahigherlevel.

Figure2GPRSasimplecase

GPRSchargingmethodsandthetraditionalGSMalsohasverybigdifferent,itisonlybydataflowcharging,namelyaccordingtotheusertheamountoftransmitteddatatobilling,forexample,wedownloadedinformation,notbythetimeonlinechargingthatistosay,aslongasthetransmissionofthedata,evenifastraight"online",alsoneednotpayfor.Thenmakea"call"forexample,intheuseofGSM+WAPmobilephoneonline,likethephonestartedcharging;andtheuseofGPRE+WAPonlineismorereasonable,asthephonedoesnotcollectfees,onlydialoguetocalculatecosts.

3、Systemoverview

3.1Thetarget

Thesystem'smainpurposeistosolvealargeenterpriseintheproblemofexistence,asfollows:

（1）Thelackofaperfectsystem,cannotmasterthevehiclerealtimecondition.

（2）Employeesintheworkcannotbetimelyappropriatetransport,leadingtothelackofproductivity.

（3）Duetotransporttheinefficientuseoforunauthorizeduse,causethedeclineofproductivity.

Inordertosolvetheaboveproblem,weusethesystemmadethefollowingattempt:

（1）MoreeasytooperatetheInternetinterface.

（2）Anaccepted,alreadyexistingcommunicationsfacilitiesuse.

（3）Amoreacceptedbythepeoplereflectthegeographicinformationtotheoperationofthedevice.

（4）Openinformationresourcetooluse,reducingthecostofsystem.

3.2Informationtechnologyoverview

Atpresent,thereareseveraldifferentformsofthelocatingscheme.Somearebytheservertotheclientforunifiedoperation,someoneachcarwereindependentofthemodeofoperation.Ifweconsiderthecostfactor,theclientserversystemisabettersolution.Ifweconsidertheproblemoftimelinessfactor,independentofthemodeofoperatingsystemadvantage.Thereareothermethods,suchasstrengtheningthegeographicinformationapplication,thisappliestoclientserverenvironment,thissoftwareupgradescanbeinclientserveroperation.Forindependentmode,ifthegeographicinformationneedstobeimproved,itwillneedtolinkeachofthesoftwareupgrade.

Atpresent,thereareseveraldifferentformsofthelocatingscheme.Somearebytheservertotheclientforunifiedoperation,someoneachcarwereindependentofthemodeofoperation.Ifweconsiderthecostfactor,theclientserversystemisabettersolution.Ifweconsidertheproblemoftimelinessfactor,independentofthemodeofoperatingsystemadvantage.Thereareothermethods,suchasstrengtheningthegeographicinformationapplication,thisappliestoclientserverenvironment,thissoftwareupgradescanbeinclientserveroperation.Forindependentmode,ifthegeographicinformationneedstobeimproved,itwillneedtolinkeachofthesoftwareupgrade.

3.3Systemarchitecture

Thevehiclepositioningsystemconsideringtheconstraintsandrestrictions,basedontheInternetprovidesasolution.Thesystemdescribedherearchitectureismentionedaboveclientserversystemarchitecture,theclientherereferstothewebbrowser.Inthisarchitecture,theWebserver,communicationserver,databaseserveranddesktopmaptogether,playarolein.Inordertomakethelowestcost,thesystemselectstheopenplatformresourcestoservethedesktopmap.

Thissystemusesgeneralpacketradioservice（GPRS）toachievethetrackingunitandclientserverconnection.Generalpacketradioservice（GPRS）isa2.5Gmobilecommunicationtechnology,itisomnipresent.GPRScanalsobeappliedtoacenterpointwithitssurroundingmobiledatatransmissionbetweendevices.UsingGPRScostdependsoneverythousandbytesofdatapassedby,astheSMSinformationcostcalculationmethod.

ThroughtheGPScollectionofreal-timelocationinformation,storedintheuserhasacentraldatabase.Thesystemforeachusercangetinformationthroughtheinternet.Figure1showsthearchitectureofthesystem.

Fig3systemarchitecture

4Systemdesign

Thissectiondescribesthesystemhardwareandsoftwaredesign,andthefunctionofeachcomponent.

4.1Hardwaredesign

ThepositioningsystemthroughtheGPScollectionpositioninginformation,thentheinformationsystemcompressionforaspecificpacketformat,throughtheGPRSandsendittotheserver.IftheGPRScannotreal-timeapplication,hasthetimelabeledpacketisstoredinatemporarystorageunit,suchasGPRSwhenavailable,arestoreddatapacketswillinstantlyupload.Therefore,evenifatransmissionfailure,vehicler