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外文翻译1.GPSobtainsthewide-spreadapplication,butitstillhadtheinsufficiency.GPShasbecomeaglobalhighandnewtechnologyindustry,whichisonekindofinformationinfrastructureandisenteringpeople'sdailylifegradually.Theexistenceinsufficiencyisveryobvious,itisthesystemwhichcontrolsbymilitary,anditisimpossibleatanytimeanyplaceguaranteecivil;Inthebustlingstreets,thejungle,orinthemaskandtheenvironmentbadsituation,itsusabilityisrestricted;Thesinglesystemitselfhasthelimitation,anditisimpossibletoguaranteeanyapplication.2.GLONASSreceivestheattention,butitisactuallydisappointing.GLONASSoncegavepeopletheveryoptimisticscene,therealityisheartlessbecauseoftheeconomicalandthetechnicaldualreasons,whichenableitonlyworksincompletely,nowonlyhastheinsufficiencytenstarwork,andisveryunstable.3.Galileoiforestallsopponentbyashowofstrength,withGPScombinationapplicationforoverallmentality.TheGalileoplanliftsuphighthepurecivilflag,feelsrelievedforthehumanwiththesecuritysense.MoreoveritsannouncepubliclyandtheGPScompatibleinteraction,strengtheneditsattractionandthecompetitivepower,aswellasserviceguaranteepledge.Therichlycolorfulservicemaysatisfythedifferentscaleandtheapplicationdomaindemand.4.Themulti-systemcombinationisbetterandbetter,usingtheequipmentislimd.Manyyearslater,possiblyhasmanysatellitenavigationalsystemintheskymovement,isthebetterandbetter,oneisnotunnecessary;second,cannotdotoousingthereceivercomplex,willotherwiseincreasethecostlargely,thebeingunablemasspromotion;third,willreceiveafterthesatellitenumberwillachievecertainnumber,thesatellitesignalmany(willnotbringtheobviousadvantageagain.Generallyhasthepairofsystemfoot.5.Theenhancementsystememergesoneafteranotherincessantly,thefinaloutletisthemulti-system'scombination.Nowvarioussatellitenavigationenhancementsystememergesoneafteranotherincessantly,onlysaysbythemacrozonalityenhancementsystem,hasUS'sWAAS,Europe'sEGNOS,China'sCWAAS,Japan'sQZSS(alsohasonekindisMSAS).Oncehastwocompletewholeworldguidancesystem(GNSS)work,in-orbitsatellitereaches50-
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