Entsha Sentinel-1D Sele isemajukujukwini emva kokusungulwa kwayo nge Ariane 6 ukusuka eKourou (eFrench Guiana), inyathelo eliphambili lokugcina isantya sokujongwa koMhlaba waseYurophu phantsi kweambrela ye ICopernicusNgombulelo kwi-radar yayo yokuvula i-synthetic, i-satellite iya kubonelela ngemifanekiso ephezulu zonke iimeko imozulu, imini nobusuku.
Ufakelo lwe-orbit lugqityiwe ngaphezu kwemizuzu engama-33 Emva kokuba iphakanyiswe, isathelayithi yahlala ikwindlela yelanga ekufutshane 693 kmNgokufika kwayo, iYurophu iqinisekisa ukuqhubeka kwenkonzo ngokutshintshwa Sentinel-1Aebonisa iimpawu zokuthotywa, kwaye isebenze kunye Sentinel-1C.
Yintoni iSentinel-1D kwaye iza kusetyenziselwa ntoni?
Yakhiwe nge IThales Alenia Space Ngokwe-ESA kunye neKhomishini yaseYurophu, i-Sentinel-1D inobunzima obumalunga 2.184 kg kwaye ithwala irada I-SAR kwi-C band Yenzelwe ukubamba utshintsho emhlabeni, ulwandle kunye nomkhenkce ngokweenkcukacha ezinkulu. Idatha yayo ibalulekile kwi zolimoUkubekwa esweni kwezikhukula, uzinzo lweziseko ezingundoqo kunye nokubeka iliso kumanxweme.
Ngaphezu koko, idibanisa inkqubo Inkqubo yokuchonga ngokuzenzekelayo ebamba imiqondiso kwiinqanawa kwaye ibavumele ukuba bagqitywe ngomfanekiso we-radar. Le ndibaniselwano iququzelela ukubhaqwa iinqanawa ezingabambisani okanye osasaza ulwazi oluyimpazamo, inkxaso engundoqo ekulobeni ngokungekho mthethweni, ukuthutyeleziswa okanye ukuphanga.
Isixhobo se-SAR, esiphuhliswe ngu AirbusInika izisombululo ukuya kwi-5 yeemitha kunye nokugubungela 250 ukuya 400 km kuxhomekeke kwindlela yokufumana. Kwiimeko ezingxamisekileyo, esi sixhobo senza imephu ekhawulezileyo yeendawo ezichaphazelekayo kunye nokuhanjiswa kwe ulwazi olubalulekileyo ukhuselo loluntu.
Ubuthunywa yinxalenye ye ICopernicusInkqubo yoqwalaselo yeManyano yaseYurophu ibonelela ngedatha yasimahla nevulekileyo kulawulo, amashishini, kunye nabemi. Oku kuhamba okuqhubekayo kwe ulwazi loluntu, njengoko imifanekiso yokuqala enesisombululo esiphezulu iisathelayithi zixhasa yonke into ukusuka kuhlalutyo lwemozulu ukuya kulawulo lobutyebi.
Iinkcukacha zokuqaliswa kunye ne-Ariane 6 rocket
Ukunduluka kwenzeka ngo 21:02 UTC ukusuka kwi-Spaceport yaseYurophu e-Kourou, kunye nokwahlukana kwesathelayithi ejikeleze Imizuzu ye34 yobuthunywa. I-Arianespace isebenzise ubumbeko Ariane 62 (i-rocket booster ezimbini eziqinileyo), ezikhethiweyo ukuqinisekisa isithuba sokusungulwa kunye nokukhawulezisa ukungena kwinkonzo ye-Sentinel-1D.
Uthumo, oluchongwe njenge VA265Oku kubonisa enye impumelelo kwi-heavy-lift pitcher yaseYurophu, eqhubekayo irempu yomsebenzi Kulo nyaka. Ukhetho lwe-Ariane 6 ngaphezu kwezinye iinketho luphendule kwimfuno yokubeka i-satellite kwi-orbit ngokukhawuleza kunye nomnqweno ukubeka phambili iivektha zaseYurophu kwimishini yeziko.
Amagosa e-ESA agxininise ukuba i-Sentinel-1D kufuneka isebenze ngokukhawuleza ukuphepha izithuba zenkonzo, ngelixa i-Arianespace igxininise indima yeprogram ye-Ariane 6 kwi ukuzimela kokufikelela kwindawo yelizwekazi. Le nqwelo-moya yorhwebo yomeleza indlela yerokethi emva kokuqaliswa ngempumelelo kwayo kwangaphambili.
Ukutshintshwa kwe-constellation ye-Sentinel-1 kunye nobomi benkonzo
Nge-Sentinel-1D kwi-orbit, eyokuqala Iqela leenkwenkwezi zeSentinel-1 Ngoku igqityiwe kwaye ilungele ukusebenza ngokuhambelana ne-1C. Injongo kukuqinisekisa ukuqhubeka kwemilinganiselo kunye nokuphucula phinda ujonge amazaNgesathelayithi ezimbini, ikroza lingabuya kwindawo enye malunga neentsuku ezintandathu, xa kuthelekiswa neentsuku ezili-12 ngesathelayithi enye.
Ngenxa yokuguga kunye nokukrazula kwindlela yokuqhubela phambili Sentinel-1AI-ESA iceba ukuqalisa ukuhla okulawulwayo ukusuka kwi-orbit yayo nje ukuba i-1D igqibe ukugunyaziswa kwayo. Olu buchule lulandela izikhokelo ze-a arhente enoxanduva ukuqinisekisa ukungena kwakhona ngexesha elibekiweyo kunye nokunciphisa ukuveliswa kobutyobo bendawo.
I-Sentinel-1D yenzelwe ubomi benkonzo eqhelekileyo jikelele iminyaka esixhenxengokubanakho ukwandisa imisebenzi ngokuxhomekeke kubume benkqubo engaphantsi. Ukuqhubekeka kweCopernicus kwakhona kuxhaswa yi-ecosystem yaseYurophu amaziko edatha kunye nezikhululo iinkqubo zokulandelela eziqinisekisa ukuhanjiswa kwemveliso ngexesha elifanelekileyo.
Itekhnoloji ye-onboard: Iimowudi ze-SAR, i-eriyali yeemitha ezili-12, kunye nenkunkuma yendawo encinci
Irada isebenza ngeendlela ezine eziphambili: I-Interferometric Wide Swath (IW) ngomhlaba (ugutyungelo olubanzi kunye nemilinganiselo yokuguqulwa), Ulwandle Olubanzi Olungaphaya (EW) kwiilwandle (ukufunyanwa kweenqanawa kunye nokuchithwa), Imowudi yamaza (WV) ngamaza kunye I-StripMap (SM) xa iinkcukacha ezithe chatha zifuneka kwiindawo ezithile. Oku bhetyebhetye kuvumela uqwalaselo ukuba lulungelelaniswe nganye imeko yokusebenza.
I-eriyali ephambili, malunga 12 mithaIfakwe kwi-orbit kwaye isasaze isignali kumakhulu eemodyuli zokuhambisa / zomamkeli ngongqamaniso olugqibeleleyo. Olu lawulo lwesigaba luyimfuneko kubuchule obunje interferometry, ezilinganisa iintshukumo zomhlaba ngokolandelelwano lweemilimitha kunye nokwenza iimephu zotshintsho emva kweenyikima okanye ugqabhuko-dubulo.
Ukuphucula uzinzo, uyilo lubandakanya indlela yobunini eyahlula i-eriyali kwibhasi yesathelayithi ngexesha lokungena kwakhona ekupheleni komsebenzi. Oku kuququzelela i ukuqhekeka ukususwa kwecandelo ngokukhawuleza kwaye kunceda ukunciphisa umngcipheko ohambelana nobutyobo kwi-orbit.
Impembelelo eSpain naseYurophu
Ikhonkco lezoshishino laseYurophu liye lathatha isigqibo: IThales Alenia Space ikhokela ubuthunywa njengekontraka ephambili kunye Airbus Ibonelela ngesixhobo se-SAR. ISpain ithatha inxaxheba kumacandelo aphambili oyilo lweenkqubo. ukucubungula algorithms kunye nokusebenza komhlaba, ukuqinisa ukuzimela kwezobuchwepheshe kunye nothungelwano lweenkampani ezisebenza kwindawo.
Ngaphaya kweshishini, amaqela emfundo kunye namaziko aseYurophu aya kuqhuba kwaye aqinisekise idatha ukuze abalawuli kunye neenkampani zifikelele kuyo. iimveliso zokusebenza (imingcipheko yokwakheka komhlaba, ukuchaneka kwezolimo, uphononongo lwaselwandle), kukhethwa ukwamkelwa kweenkonzo ezisekelwe kuqwalaselo loMhlaba.
Izicelo eziphambili: iimeko ezingxamisekileyo, ulwandle kunye nommandla
Kwiimeko ezingxamisekileyo, i-Sentinel-1D iya kunika amandla iinkonzo ze ulawulo lwentlekele Izikhukhula zikaCopernicus, umonakalo, kunye neemephu zokufikeleleka ziphucula ulungelelwaniso lwezixhobo. Kwicandelo lolwandle, irada + I-AIS Iqinisa ulawulo lwezithuthi, ukubonwa kokuchitheka, kunye nokhuseleko kwiindawo ezinobuthathaka.
Kumhlaba, i-SAR ivumela ukubeka iliso ukufuma komhlabaukuguquka kwezityalo kunye nokutshintsha kwezityalo; kananjalo ukwenza imaphu yokudilika komhlabaukuthotywa kwedolophu kunye nokukhubazeka kumadama okanye iibhulorho. Olu lwazi luququzelela izigqibo malunga cwangciso kunye nokugcinwa kweziseko ezingundoqo ezibalulekileyo.
Kwimimandla ye-polar, i-mission iya kunceda ukulandelela i-dynamics ye umkhenkce wolwandle kunye nokukhukuliseka kweentaba zomkhenkce, okunefuthe lokuhamba ngenqanawa kunye nomzekelo wemozulu. Ukuqheleka kwayo kunye nokuchasana kwamafu kunye nobumnyama kwenza i-Sentinel-1D ibe sisixhobo esibalulekileyo. esisiseko ixesha elide series.
Ulawulo kunye nokufikelela okuvulelekileyo kwidatha
Copernicus, elawulwa yi Komishoni yaseYurophu Ngenkxaso evela kwi-ESA, igcina umgaqo-nkqubo wedatha okhululekileyo, obanzi, novulekileyo. Olu fikelelo lukhuthaza ukusungulwa kweYurophu, ukusuka ekuqaleni ukuya ulawulo loluntukwaye ikhawulezisa ukusetyenziswa koqwalaselo loMhlaba kumacandelo afana namandla, i-inshurensi, kunye nolungiselelo.
Ukukhetha kwe Ariane 6 kolu phehlelelo, kunye ne Vega C Kweminye imisebenzi yeCopernicus, ibonisa ukuzibophelela kwizithuthi zaseYurophu ukufezekisa amaxesha okugunyazisa amabhongo kunye nokugcina ukuzimela ngobuchule ukufikelela kwindawo yelizwekazi.
Ngokunyuswa kwe-Ariane 6 kunye nokuthunyelwa kwe-Sentinel-1D, iYurophu idibanisa amandla ayo okufumana. imifanekiso ethembekileyo kwaye rhoqo eMhlabeni, zigcine iinkonzo ezibalulekileyo kwaye zomeleze ukhuseleko lwaselwandle kunye nokusingqongileyo ngaphandle kokuphazamiseka okuncomekayo ekunikezelweni kwedatha.
