卫星电视技术讲座 第十一讲 卫星技术新发展及星网应用

(100866)1,IP,,,,,1.1Ku()()(Ku),Ku,,,19951997(ITU),ITU20005862,(IstanbulBSS)BSS,4(DBS):6292.2122134,22,12,122DVB-C,64-QAM,8M40MbpsMPEG25M,6MPEG2VODCM,CableModemTV,CM,,CMTS,MPEG23NVOD3,10min10min4CATV,,(:2000208229)06©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(DBS),ITUKa,Ka,1.2,()(),,,1.3,DVB(),,,1.4,,,(1),HDTV,(0.4m)1.5,IPPC,:(SAW);;(ASIC),CMOS,,BUTLER()10,,,,,,,,,1.61985,199910,,:,,1999DVB-SCKu,1999Ku,DVB-S,39(),,1999,90.35%91.59%,,,,,OPENTV()(IRD),,IRD,EPG()()()IP(IPTS),PC16©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(DBS/DTH),0.4m,HDTV(),2,2.1(Ku),,Ku(,)()(),,,,15,8122.2,,,,,,4,(1),Ku4060K,C20K,60dB(2),,,-40+50C5150MHz,10-4,2MHz,,,,500kHz,-85dBc/Hz(10kHz),QPSK,(3),,,,,,,,,,,LNBF(LNBwithFEEDHORN),,,,,,(LNBF),2,2,13V/18V,2,()9502150MHz,C500MHz,2,,5150MHz5750MHz,,9501450MHz15502050MHz,,,2,,Ku,CKu,26©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.()2.32,5(),(IRD),IRDGY/T148-2000(9),,,IRD,,IRD,:(1)IRD,,IRD,,(2)IRDDVB-S,(CA),CA(),DVB,IRDCA(3),IPIRD()(4),PC(PCI),DVB-SIP,RF,L(9502510MHz),PC(5)IPIPTS,,PC,IPPC(6)OPENTVIRDOPENTVIRD,IRD,OPENTV,IRD,IRD,EPG(),Internet,IRDInter2net,(NVOD),OPENTVIRD,(),,()()IP,,,,,3.1(1)1(2),,VSAT()::a.3MPEG-,46Mbps;b.,418Mbps36©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.():a.2384kbps(3843232=1536k);b.2Mbps;c.IP;d.Internet,VSAT:,:a.1MPEG-,46Mbps;b.1():a.1384kbps;b.()112Mbps,IP,VSAT:,:1:,1,3,2212PC,3PC,,Internet3.211:46©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(ODU);();DVB;();();Internet(),In2ternet3.2.1(1)MediaStream(IP),Pipe,,,DVB(Modem),,(ODU),(2)(LAN),,WindowsNT(3):;,3.2.2,MPEG-,(1),,MPEG-,DVBMPEG-1.515Mbps,IRDDVB,5Mbps(2),3.2.3InternetInternet22InternetInternetIn2ternetTCP/IP,,IntranetInternet,PSTNISDNDDN,,,InternetIntranet,,,,3.2.4ODU,33()56©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(MPEG-,),,,4:1,,,,,,,,10M,,MPEG-,Internet,PSTNISDNISP,Internet,,,,InternetIntranetInternet,,InternetIntranet,DVB(IRD),,(:2000209217),24,19266©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.