衛(wèi)星遙感-教案-衛(wèi)星軌道與衛(wèi)星技術(shù)-2004-資料下載頁(yè)
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【正文】 tative Committee)原國(guó)際無(wú)線電咨詢委員會(huì)CCITT(Consultative Committee, International Telegraph and Telephone)國(guó)際電報(bào)電話咨詢委員會(huì)CDV(Compressed Digital Video)壓縮數(shù)字視頻CH(Channel)信道、通道、頻道CHI(Channel Interface)通道接口CHIO(Cannel Input/Output)通道輸入/輸出CM(Communication Mutiplexer)通信復(fù)用器(Cross Modulation)交叉調(diào)節(jié)器制C/N(Carrier/Noise)載（波）噪（聲）比CN(Communication Network)通信網(wǎng)絡(luò)CNR(C/N)(Carrier to Noise Ration)載噪比CODEC(codec)(CoderDecode)編解碼器COFDM(Coded Orthogonal Frequency Devision Multiplexing)編碼正交頻分復(fù)用COMSAT(Communications Satellite Corporation)美國(guó)通信衛(wèi)星公司CP(Circular Polarization)圓極化CP(Circular Polarigation)圓極化CPU(Central Processing Unit)中央處理單元CPW(Circular Polargation Wave)圓極化波CS(Communication Satellite)通信衛(wèi)星D/A（Digital/Analog Conversion）數(shù)字模擬轉(zhuǎn)換DAC(Digital/Analog Conversion)數(shù)字模擬轉(zhuǎn)換dB(deciBel)分貝，表示對(duì)數(shù)比例值dBi(dB antenna gain relative to anisotroppoc source)天線的增益（相對(duì)于各向同性輻射源）DBS(dB power relative to one watt)直播衛(wèi)星dBW(dB power relative to one mili watt)相對(duì)于1W的功率的dB值dBm(dB power relative to one mili watt)相對(duì)于1mw 的功率dB值DC(Direct Current)直流D/C(Down Convertor)下變頻器DE(Deemphasis)去加重Demod(Demodulation)解調(diào)Domsat(Domestic CommuniSalellile)國(guó)內(nèi)通信衛(wèi)星DG(Differential Gain)微分增益DPX(Diplexer)雙工器DSNG(Digital Satellite News Gather)數(shù)字衛(wèi)星新聞采集DSP(Digital Satellite Processor)數(shù)字信號(hào)處理DSR(Digital Satellite Radio)數(shù)字衛(wèi)星廣播DSS(Digital Satellite System)數(shù)字系統(tǒng)DTH(Direct to home)直播到戶DHI(Data Transmission Interface)數(shù)據(jù)傳輸接口DTSC(Digital Television Standard Converter)數(shù)字電視制式轉(zhuǎn)換器DTV(Digital Television)數(shù)字電視DVB(Digital Video Broadcasting)數(shù)字視頻廣播(Digital Video Bandwidth)數(shù)字視頻帶寬ECC(Emitter Correction Code)糾錯(cuò)碼ECS(European Communications Satellite)歐洲通信衛(wèi)星EIRP（Effective Isotropic Radiation Power）等效全向輻射功率ED(Energy Dispersal)能量擴(kuò)散EMM(Entitlement Management Message)授權(quán)管理信息ENDE(Encoder/DECoder)編解碼器ENG(Electronic News Gathering)電子新聞采集ENI(Equivalent Noise Input)等效噪聲輸入EPG(Electronic Programme Guides)電子節(jié)目指南ERP(Echo Return Loss)回波損耗ES(Earth Station)地球站(Elementary Stream)基本碼流ESCR(Elementary Stream Clock Reference)基本碼流時(shí)鐘基準(zhǔn)f/D(FocalLengthto –Diameter ratio of a reflector)衛(wèi)星拋物反射面焦距對(duì)天線口徑之比FDM(Frequency Division Multiple)頻分復(fù)用FDMA(Frequency Division Multiple Access)頻分多址FE(Front End)前端FEC(Forward Error Correction)前向糾錯(cuò)FECR(Forward Error Corretion Rate)前向糾錯(cuò)率FF(Feed Forward)前饋FLL(Frequency Locked Loop)頻率鎖定環(huán)FM(Frequency Modulation)調(diào)頻FM Threshold調(diào)頻門(mén)限FSS(Fixed Satellite Service)靜止衛(wèi)星業(yè)務(wù)GaAs(Gallium Arsenide)砷化鎵Gb(Gigabit)吉比特Gbps(Gigabits/Second)吉比特/秒
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