Iyini i-Geostationary Satellite?
Ama-satellite e-geostationary ayisici esibalulekile sobuchwepheshe besimanje, adlala indima enkulu kwezokuxhumana, ukuzulazula, i-meteorology, kanye nezinye izinhlelo zokusebenza zesayensi ezahlukahlukene. Lesi sihloko sizohlola ngokujulile ukuthi ayini ama-satellite e-geostationary, ukuthi asebenza kanjani, kanye nendima yawo ebalulekile empilweni yansuku zonke.
Ukuqonda Ama-satellite E-Geostationary
Ama-satellite e-geostationary awuhlobo lwesathelayithi ejikeleza uMhlaba endaweni ephakeme cishe ngamakhilomitha angu-35.786 ngaphezu kwe-equator. Ahamba ngesivinini esifanayo nokujikeleza koMhlaba, ngakho-ke abonakala engashintshi ebusweni boMhlaba. Lokhu kunikeza izinzuzo ezibalulekile, ikakhulukazi ezinhlelweni zokuxhumana, njengoba ama-antenna eMhlabeni engadingi ukulungisa njalo ukuma kwawo ukuze alondoloze ukuxhumana nesathelayithi.
Umlando Nentuthuko
Umbono wesethelayithi ye-geostationary waqale waphakanyiswa ngumlobi wesayensi yaseBrithani u-Arthur C. Clarke esihlokweni esanyatheliswa ngo-1945. Waphakamisa ukuthi isethelayithi ebekwe endaweni ethile ephakeme ngaphezu koMhlaba izohlala ingashintshi uma iqhathaniswa nendawo ethile ebusweni boMhlaba. Lo mbono kamuva waba yisisekelo sobuchwepheshe obuningi bezokuxhumana besimanje.
I-satellite yokuqala ye-geostationary ephumelele kwaba yi-Syncom 3, eyasungulwa yi-NASA ngo-1964. Kwakuyi-satellite yokuqala yezokuxhumana ephumelele, evumela ukusakazwa bukhoma kuthelevishini yama-Olimpiki aseTokyo ka-1964 e-United States. Kusukela ngaleso sikhathi, ama-satellite amaningi e-geostationary aye aqaliswa ngezinjongo ezahlukene, okuhlanganisa ukuxhumana, isimo sezulu, kanye nokuqapha imvelo.
Indlela Ama-satellite E-Geostationary Asebenza Ngayo
Ama-satellite e-geostationary abekwe ku-geostationary orbit, ngqo ngaphezu kwe-equator. Lo mjikelezo uvumela i-satellite ukuthi iqedele umjikelezo owodwa uzungeze uMhlaba emahoreni angama-24, isikhathi esifanayo nokujikeleza koMhlaba. Ngamanye amazwi, lawa ma-satellite ajikeleza noMhlaba, egcina indawo eqinile maqondana nobuso boMhlaba.
Ukuze kufezwe futhi kugcinwe umjikelezo we-geostationary, amasathelayithi athululwa ngamarokhethi anamandla. Ngemva kokufika emjikelezweni wawo wokuqala, isathelayithi isebenzisa ama-thruster angaphakathi ukwenza imisebenzi yokugcina ize ifike endaweni oyifunayo. Kulokhu kuphakama, amandla adonsela phansi oMhlaba kanye namandla e-centrifugal kusezingeni elifanele lokugcina isathelayithi isendaweni yayo.
Amasathelayithi e-geostationary ahlonyiswe kakhulu ngemishini yokuxhumana ehlukahlukene, njenge-transponders (amadivayisi okwamukela nokudlulisa izimpawu), ama-antenna, kanye nemithombo yamandla (ngokuvamile amaphaneli elanga). Idatha yokuxhumana etholwe yisathelayithi evela eziteshini zomhlaba ezingezansi iyacutshungulwa bese idluliselwa kubamukeli eMhlabeni.
Indima Ekukhulumisaneni
Enye yezinhlelo zokusebenza ezinkulu zama-satellite e-geostationary isekuxhumaneni. Zivumela ukudluliswa kwedatha, izwi, nevidiyo emhlabeni jikelele. Lokhu kubalulekile eziteshini zethelevishini, ezinkampanini zokuxhumana, kanye nabahlinzeki be-inthanethi, kanye namanethiwekhi ezempi kanye nohulumeni.
Ngokusebenzisa amasathelayithi e-geostationary, izimpawu zokuxhumana zingadluliselwa ezindaweni ezibanzi kakhulu. Isibonelo, amasathelayithi zokuxhumana anganikeza izinsizakalo zocingo kanye ne-inthanethi ezindaweni ezikude lapho izintambo ezibonakalayo noma obunye ubuchwepheshe obusekelwe phansi bungasebenzi noma bungabizi.
Intuthuko yezobuchwepheshe ivumele amasathelayithi okuxhumana ukuthi asekele izinsizakalo eziningi, kusukela ekusakazweni kwethelevishini nomsakazo kuya ku-inthanethi ye-broadband esheshayo. Ngaphezu kwalokho, amasathelayithi e-geostationary nawo asekela izinhlelo zokuzulazula ezisekelwe kumasathelayithi, njenge-GPS, ezibalulekile ezinhlobonhlobo zezinhlelo zokusebenza zesimanje, okuhlanganisa ezokuthutha, ezokuthutha, ezolimo, nokuningi.
Indima ku-Meteorology kanye nokuqapha imvelo
Ama-satellite e-geostationary nawo adlala indima ebalulekile ekubikezelweni kwesimo sezulu kanye nokuqapha imvelo. Ngokuhlala ezindaweni ezizinzile futhi emboza izindawo ezinkulu, angaqapha isimo sezulu kanye nezimo zezulu ngendlela ephumelela kakhulu. Lawa ma-satellite ahlinzeka ngolwazi olubalulekile lokubikezela isimo sezulu, ukuhlaziywa kwesimo sezulu, kanye nokutholakala kwezinhlekelele zemvelo ezifana neziphepho, izikhukhula, kanye nemililo yamahlathi.
Izithombe ezikhiqizwe yiziphuphutheki zesimo sezulu ze-geostationary, njenge-Geostationary Operational Environmental Satellites (GOES) yase-United States, zinikeza idatha ebalulekile yesikhathi sangempela kubacwaningi besimo sezulu kanye nezinhlangano zokuphathwa kwezinhlekelele. Le datha ivumela ososayensi ukuqapha izinguquko ezimweni zomkhathi, ulwandle, kanye nomhlaba, nokudala amamodeli anembe kakhulu okuziphatha kwesimo sezulu kanye nezinhlekelele zemvelo.
Ezokuphepha Nokuzivikela
Ngaphandle kwezicelo zezentengiselwano nezesayensi, amasathelayithi e-geostationary nawo adlala indima ebalulekile ekuphepheni nasekuvikeleni. Lawa masathelayithi asetshenziselwa ubuhlakani bezempi, ukuqapha, kanye nokuhlola, kanye nokuxhumana okuphephile phakathi kwamasosha kanye nendlunkulu. Ngokwesimo se-geopolitics yomhlaba wonke, ukuba namasathelayithi e-geostationary asebenzayo futhi athembekile kuyimpahla ebalulekile yamasu.
Izinselele Nekusasa
Naphezu kwezinzuzo zayo ezinkulu, ukuqalisa nokusebenzisa amasathelayithi e-geostationary nakho kubhekene nezinselele ezahlukahlukene. Enye yezinselele ezinkulu izindleko eziphakeme kakhulu. Ukuqalisa nokugcina amasathelayithi e-orbit kudinga ukutshalwa kwezimali okukhulu kanye nezindleko eziqhubekayo zokusebenza nokuqapha.
Ngaphezu kwalokho, isikhala esiku-geostationary orbit sincane kakhulu futhi siya ngokuya sigcwala ngenxa yokwanda kwenani lokwethulwa kwesathelayithi. Lokhu kuye kwaphakamisa ukukhathazeka mayelana nokushayisana kwesathelayithi noma "imfucumfucu yasemkhathini" engalimaza amasathelayithi asebenzayo noma ibe usongo eMhlabeni.
Kodwa-ke, intuthuko yezobuchwepheshe iyaqhubeka nokuhlinzeka ngezixazululo ezintsha zokubhekana nalezi zinselele. Esinye isixazululo ukuthuthukiswa kwamasathelayithi amancane, asebenza kahle kakhulu kanye namasu okuqalisa asebenza kahle kakhulu. Izinhlelo ezisekelwe kunethiwekhi yesathelayithi, njengezinkanyezi zesathelayithi ezisebenza ezindaweni eziphansi neziphakathi nendawo, nazo ziyathuthukiswa ukuze zihambisane futhi zisekele imisebenzi yamasathelayithi e-geostationary.
Isiphetho
Amasathelayithi e-geostationary ayingxenye ebalulekile yengqalasizinda yezobuchwepheshe yomhlaba wonke, edlala indima ebalulekile kwezokuxhumana, ukuzulazula, i-meteorology, ukuzivikela, kanye nezinye izinhlelo zokusebenza zesayensi ezahlukahlukene. Ngokuzungeza uMhlaba endaweni ephakeme futhi ehamba ngokujikeleza koMhlaba, lawa masathelayithi ayakwazi ukunikeza izinsizakalo nedatha engaphazanyiswa ezindaweni ezinkulu.
Kusukela emibonweni ka-Arthur C. Clarke yokuguqula izinto kuya ekufezeni ubuchwepheshe besimanje, ama-satellite e-geostationary ashintshe indlela esixhumana futhi siqonda ngayo umhlaba. Naphezu kwezinselele eziningi, ikusasa lama-satellite e-geostationary liqhakazile, kanye nokusungula izinto ezintsha kwezobuchwepheshe okuthembisa ukusebenza kahle okukhulu kanye namakhono. Lawa ma-satellite awagcini nje ngokubonisa intuthuko yezobuchwepheshe babantu kodwa futhi ayithuluzi elibalulekile eliqhubeka nokusekela impilo yesimanje ezicini eziningi.
