Okwangoku, ngenkqubela kancinane ye-StarLink, iTelesat, i-OneWeb kunye ne-AST yezicwangciso zokusasazwa kweenkwenkwezi zesathelayithi, unxibelelwano lwesathelayithi olunomjikelezo ophantsi luyanda kwakhona. Ikhwelo "lokudibanisa" phakathi konxibelelwano lwesathelayithi kunye nonxibelelwano lweselula olusemhlabeni nalo liya livakala ngakumbi. U-Chen Shanzhi ukholelwa ukuba izizathu eziphambili zale nkqubela phambili yezobuchwepheshe kunye neenguqu kwimfuno.
Ngokwethekhinoloji, enye yinkqubela yethekhnoloji yokuphehlelelwa kwesathelayithi, kuqukwa nezinto ezintsha zobuxhakaxhaka bobuchwephesha obufana “notolo olunye oluneesathelayithi ezininzi” kunye nokuphinda kusetyenziswe i-rocket; eyesibini yinkqubela-phambili yobugcisa bokwenziwa kwesathelayithi, kuquka nenkqubela phambili yemathiriyeli, unikezelo lwamandla, kunye nobuchwepheshe bokulungisa; eyesithathu yiteknoloji yesekethe ehlanganisiweyo Ukuqhubela phambili kwesathelayithi, ukuguqulwa kweminiaturization, imodyuli, kunye nokudityaniswa kweesathelayithi, kunye nokwandiswa kwezakhono zokusetyenzwa ebhodini; eyesine kukuqhubela phambili kobugcisa bonxibelelwano. Ngokuziphendukela kwe-3G, 4G, kunye ne-5G, ii-eriyali ezinkulu, i-millimeter wave Ngenkqubela phambili kwimilo kunye nokunye, iteknoloji yonxibelelwano yeselula yomhlaba ingasetyenziswa kwiisathelayithi.
Kwicala lemfuno, kunye nokwandiswa kwezicelo zeshishini kunye nemisebenzi yabantu, izibonelelo zonxibelelwano lwesathelayithi lugubungela umhlaba kunye nokugubungela indawo ziqala ukuvela. Ukuza kuthi ga namhlanje, inkqubo yonxibelelwano oluhambahambayo olusemhlabeni lufikelele ngaphezu kwe-70% yabemi, kodwa ngenxa yeemeko zobugcisa nezoqoqosho, igubungela kuphela i-20% yendawo yomhlaba, emalunga ne-6% kuphela esekelwe kumphezulu womhlaba. Ngophuhliso lweshishini, ukuhamba ngeenqwelomoya, ulwandle, ukuloba, i-petroleum, ukujonga imekobume, imisebenzi yangaphandle yendlela, kunye neqhinga lesizwe kunye nonxibelelwano lomkhosi, njl., zinemfuno emandla yokugubungela indawo ebanzi kunye nendawo.
U-Chen Shanzhi ukholelwa ukuba uxhulumaniso oluthe ngqo lweefowuni eziphathwayo kwiisathelayithi kuthetha ukuba unxibelelwano lwesathelayithi luya kungena kwimarike yabathengi ukusuka kwimarike yesicelo soshishino. "Nangona kunjalo, kuyahlekisa ukuthi iStarlink inokutshintsha okanye ibhukuqe i-5G." U-Chen Shanzhi wabonisa ukuba unxibelelwano lwesathelayithi lunemida emininzi. Eyokuqala lukhuselo olungasebenziyo lwendawo. Iisathelayithi ezintathu ezikwi-orbit ephezulu ezihambelanayo zinokugubungela umhlaba wonke. Amakhulu eesathelayithi ezijikelezayo ezisezantsi zihamba ngesantya esiphezulu xa zithelekiswa nomhlaba kwaye zinokugquma ngokulinganayo kuphela. Iindawo ezininzi azisebenzi kuba akukho basebenzisi. ; Okwesibini, imiqondiso yesathelayithi ayinakugquma ngaphakathi nangaphandle igutyungelwe ziindlela ezidlulayo namahlathi asezintabeni; okwesithathu, i-miniaturization yeetheminali zesathelayithi kunye nokuchasana phakathi kwee-eriyali, ngakumbi abantu baye baqhelana ne-eriyali eyakhelweyo kwiifowuni eziqhelekileyo eziqhelekileyo (abasebenzisi abanangqiqo), Ifowuni yeselula yorhwebo yangoku isenayo i-eriyali yangaphandle; yesine, ukusebenza kakuhle kwe-spectral yonxibelelwano ngesathelayithi iphantsi kakhulu kunonxibelelwano lweselula. Ukusebenza kweSpectrum kungaphezulu kwe-10 bit/s/Hz. Okokugqibela, kwaye okona kubaluleke kakhulu, kuba ibandakanya amakhonkco amaninzi afana nokuveliswa kwesathelayithi, ukuqaliswa kwesathelayithi, izixhobo zomhlaba, ukusebenza kwesathelayithi kunye nenkonzo, ukwakhiwa kunye nokusebenza kunye nokugcinwa kweendleko zesathelayithi zonxibelelwano ziphindwe kashumi okanye namakhulu amaxesha okomhlaba. isikhululo esisisiseko, ngoko ke umrhumo wonxibelelwano uya kunyuka ngokuqinisekileyo. Iphezulu kune-5G yonxibelelwano lweselula olusemhlabeni.
Xa kuthelekiswa nenkqubo yonxibelelwano lweselula esemhlabeni, umahluko ophambili wobugcisa kunye nemingeni yenkqubo yonxibelelwano ngesathelayithi imi ngolu hlobo lulandelayo: 1) Iimpawu zokusasaza zetshaneli yesathelayithi kunye nejelo lomhlaba zahlukile, unxibelelwano lwesathelayithi lunomgama omde wokusasaza, ilahleko yendlela yokusasazwa komqondiso inkulu, kwaye ulibaziseko losasazo lukhulu. Ukuzisa imingeni yokudibanisa uhlahlo lwabiwo-mali, ubudlelwane bexesha kunye nesikimu sothumelo; I-2) Ukunyakaza kwe-Satellite ye-Speed-Speed, kubangela ukusebenza kokulandelelaniswa kwexesha, ukulandelelaniswa kwe-frequency synchronization (i-Doppler effect), ulawulo lokuhamba (ukutshintshwa kwe-beam rhoqo kunye nokutshintshwa kwe-inter-satellite), ukumodareyitha ukusebenza kwe-Demodulation kunye neminye imingeni. Ngokomzekelo, ifowuni ephathwayo ingamakhulu ambalwa eemitha ukuya kwinqanaba leekhilomitha ukusuka kwisikhululo esisezantsi, kwaye i-5G inokuxhasa isantya sokunyakaza kwe-terminal ye-500km / h; ngelixa isathelayithi ye-orbit ephantsi imalunga nama-300 ukuya kwi-1,500km kude neselfowuni ephathwayo ephantsi, kwaye isathelayithi ihamba ngesantya esimalunga ne-7.7 ukuya kwi-7.1km/s ngokunxulumene nomhlaba, idlula i-25,000km/h.
Ixesha lokuposa: Dec-20-2022
