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1、1外文資料翻譯1.GPSobtainsthewidespreadapplicationbutitstillhadtheinsufficiency.GPShasbecomeaglobalhighnewtechnologyindustrywhichisonekindofinfmationinfrastructureisenteringpeoplesdailylifegradually.Theexistenceinsufficiencyisv

2、eryobviousitisthesystemwhichcontrolsbymilitaryitisimpossibleatanytimeanyplaceguaranteecivilInthebustlingstreetsthejungleinthemasktheenvironmentbadsituationitsusabilityisrestrictedThesinglesystemitselfhasthelimitationitis

3、impossibletoguaranteeanyapplication.2.GLONASSreceivestheattentionbutitisactuallydisappointing.GLONASSoncegavepeopletheveryoptimisticscenetherealityisheartlessbecauseoftheeconomicalthetechnicaldualreasonswhichenableitonly

4、wksincompletelynowonlyhastheinsufficiencytenstarwkisveryunstable.3.GalileoifestallsopponentbyashowofstrengthwithGPScombinationapplicationfoverallmentality.TheGalileoplanliftsuphighthepurecivilflagfeelsrelievedfthehumanwi

5、ththesecuritysense.MeoveritsannouncepubliclytheGPScompatibleinteractionstrengtheneditsattractionthecompetitivepoweraswellasserviceguaranteepledge.Therichlycolfulservicemaysatisfythedifferentscaletheapplicationdomaindem.4

6、.Themultisystemcombinationisbetterbetterusingtheequipmentislimd.Manyyearslaterpossiblyhasmanysatellitenavigationalsystemintheskymovement3havetheGPSmodernization.2.Galileoemphasizesitspurecivilnatureinfactmayalsofmilitary

7、.WhatGalileosaidispurecivilinfactmaytakeinthesameoldwaymilitarymeovertheperfmanceaprecisionspotareunambiguous.Becauseitsservicedividesintoseveralrankssomesingleplanepointingaccuracymayreach1misthemilitarylevelcompletely.

8、3.ProvidesinmanykindsofservicesismostobviousbyPRSmilitary.GalileoProvidesfivekindofservicesfirstsamefree“serves(OS)publicly”withtheGPSstardpositioningservicesecond“commercialservice(CS)”third“thesafetyserves(SoL)”fourth“

9、thesearchrescueserves(SAR)”fifth“thepublicspecialpermissionserves(PRS)”.WithOSCSSoLcomparePRSmayprovideahigherlevelprotectionresiststothespatialsignal(SIS)attackthegoalisimprovestheSISusabilityprobabilitytheachievementde

10、alswiththeeconomicalterrismmaliciousthehostiledisturbancecountermeasuremeasurethisistheobviousmilitaryacteristic.4.Ittakesanitemofnationaltheinfmationinfrastructurecivilthisshouldbeanapplicationkey.Thesatellitenavigation

11、alsystemtakesanitemofnationaltheinfmationinfrastructureshouldusemaximumlimitplayitsrolefullyparticularlythecivildomainisextremelybroadtakeGPSastheexampleabove95%iscivil.5.Themilitarythecivilsignalseparatesispossiblyawise

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