Uplink kis tau tus mob yog dab tsi?
Uplink kis tau tus mob yog dab tsi?

Video: Uplink kis tau tus mob yog dab tsi?

Video: Uplink kis tau tus mob yog dab tsi?
Video: Mob raum yog mob li cas thiab yuav muab tshuaj dab tsi kho ? | POVYANG 2024, Kaum ib hlis
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Kev sib txuas lus System

Kev sib txuas lus mus los ntawm satellite mus rau hauv av yog hu ua downlink, thiab thaum nws mus los ntawm hauv av mus rau satellite itis hu ua uplink . Thaum ib uplink yog tau txais los ntawm lub spacecraft tib lub sij hawm ib tug downlink tau txais los ntawm lub ntiaj teb, kev sib txuas lus hu ua ob txoj kev.

Ib yam li ntawd, nws tau nug, dab tsi yog uplink transmitter?

Nws muaj Uplink Transmitter , Satellite Linkand Downlink Receiver, uas tuaj yeem yooj yim muab tso rau hauv chav kuaj. Satellite tuaj yeem muab tso rau ntawm qhov siab, txoj haujlwm yog tias xav tau. Lub Transponder tau txais teeb liab los ntawm UplinkTransmitter thiab retransmits ntawm ntau zaus rau aDownlink Receiver.

Tsis tas li ntawd, dab tsi yog uplink thiab downlink hauv GSM? GSM -900 thiab GSM -1800 GSM -900 siv 890 - 915 MHz xa cov ntaub ntawv los ntawm Chaw Nres Tsheb Txawb mus rau Base Transceiver Station ( uplink ) thiab 935 - 960 MHz rau lwm cov kev taw qhia ( downlink ), muab 124 RF channels (channel naj npawb 1 txog 124) spaced ntawm 200 kHz. Duplex sib nrug ntawm 45 MHz yog siv.

Tsis tas li ntawd, vim li cas uplink thiab downlink zaus sib txawv?

Nws hais tias lub zog ntawm cov chaw nres tsheb hauv av yog ntau dua piv rau lub zog muaj nyob ntawm satellites. Yog li feem ntau zaus rau uplink yog khaws cia siab tshaj qhov downlink . Muaj ntau dua attenuation vim los nag thaum lub teeb liab zaus yog high.so downlink tseem khaws cia qis dua zaus.

Dab tsi yog qhov txawv ntawm uplink thiab downlink?

Kev sib txuas lus mus los ntawm satellite mus rau hauv av yog hu ua downlink , thiab thaum nws mus hauv av mus rau asatellite nws hu ua uplink . Thaum ib uplink yog tau txais los ntawm lub spacecraft tib lub sij hawm a downlink yog tau txais los ntawm Ntiaj Teb, kev sib txuas lus hu ua ob txoj kev.

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