{"id":30915,"date":"2019-10-31T21:38:10","date_gmt":"2019-10-31T18:38:10","guid":{"rendered":"https:\/\/prohoster.info\/blog\/sravnenie-sistem-kosmicheskoj-svyazi\/"},"modified":"2019-10-31T21:38:10","modified_gmt":"2019-10-31T18:38:10","slug":"sravnenie-sistem-kosmicheskoj-svyazi","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/sravnenie-sistem-kosmicheskoj-svyazi","title":{"rendered":"Kosmoseside s\u00fcsteemide v\u00f5rdlus","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>S\u00f5brad, nagu juba te k\u00f5ik teate, valmistame hoolega <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/ruvds\/blog\/445648\/\">uue geek-projekti<\/a><\/noindex> \u2014 \u201eServer pilvedes 2.0\u201c, v\u00f5i \u201eKosmiline andmekeskus\u201c. L\u00fchidalt \u00f6eldes: 12. aprillil k\u00e4ivitame oma valmistatud serveri stratosf\u00e4\u00e4ri, umbes 30 km k\u00f5rgusele, edastades sellele andmeid l\u00e4bi kosmose side s\u00fcsteemi ning voogedastades andmed maale raadioside kaudu. <\/p>\n<p>Ja t\u00e4na tahame r\u00e4\u00e4kida kolmest kosmose side s\u00fcsteemist, mida testime oma projektis \u2014 Iridium, GlobalStar ja \u201eGoniec\u201c. Selleks paigaldame vastuv\u00f5tuseadmestiku meie pilveserveri l\u00e4hedale.<\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/ruvds\/blog\/446708\/\"><img decoding=\"async\" alt=\"Kosmoseside s\u00fcsteemide v\u00f5rdlus\" src=\"\/wp-content\/uploads\/2019\/04\/296f00ae31869ba5da5b47035a07a36e.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h1>L\u00fchike ajalugu<\/h1>\n<p>\nK\u00f5iki kolme kirjeldatud s\u00fcsteemi arendati ja juurutati umbes samal ajal, 1990. aastatel. Ameerika Iridium on neist mitte ainult k\u00f5ige vanem (t\u00f6\u00f6d alustatud 1990. aastal), vaid ka k\u00f5ige ulatuslikum \u2014 algselt oli plaanis k\u00e4ivitada 77 satelliiti, mis vastab iridiumi aatomnumbrile. T\u00e4na t\u00f6\u00f6tab orbiidil 66 satelliiti (+ 6 reservi). S\u00fcsteemi kaubanduslik kasutamine algas 1998. aastal. Aasta jooksul suutis ettev\u00f5te pankrotit nihutada, ning 2000. aastal ostis selle varad ettev\u00f5te, mis tegutses USA kaitseministeeriumi huvides. 2001. aastal algab kaubanduslik kasutamine uuesti, 2009. aastal vahetus Iridiumi omanik taas. Sellest ajast alates elab see satelliittelefoniv\u00f5rk igati edukalt.<\/p>\n<p>GlobalStar asutati samuti Ameerikas, kuigi projektis osalevad ettev\u00f5tted Prantsusmaalt, Inglismaalt, Saksamaalt ja L\u00f5una-Koreast. Satelliitide r\u00fchma juurutamine algas 1998. aastal ja 2000. aastal k\u00e4ivitati GlobalStar kaubanduslik kasutamine. Siin ei p\u00e4\u00e4senud ka pankrotist, 2000. aastate alguses vahetas v\u00f5rk omanikku. T\u00e4na t\u00f6\u00f6tab orbiidil 48 GlobalStar satelliiti (+ 4 reservi). <\/p>\n<p>Eesti s\u00fcsteem \u00abGone\u0446\u00bb on algselt riiklik projekt, mitte eraomand. Arendamine algas juba 1989. aastal ning esimesed satelliidi edastused toimusid 1996. aastal. Alguses pidi r\u00fchm koosnema 24 satelliidist, kuid praegu on kasutusel ainult 12. Tulevikus on plaanis veel paarik\u00fcmne satelliidi k\u00e4ivitamine, sealhulgas vananevate asendamine.<\/p>\n<h1>Omadused ja v\u00f5imalused<\/h1>\n<p><\/p>\n<h3>Iridium<\/h3>\n<p>\nIridiumil on k\u00f5ige laiem katvus ja k\u00f5ige k\u00f5rgem andmeedastuskiirus. Selle satelliidid tiirlevad \u00fcmber Maa k\u00f5rgusel 780 km orbiitidel kaldnurgaga 86,5\u00b0, tagades side katta kogu planeedi pinna, polaarjoonest polaarjooneni. <\/p>\n<p><center><div class=\"youtube-placeholder\" data-id=\"Xjig4NBAPZQ\" onclick=\"loadVideo(this)\">\r\n        <img decoding=\"async\" src=\"https:\/\/img.youtube.com\/vi\/Xjig4NBAPZQ\/hqdefault.jpg\" alt=\"Vaata videot\" loading=\"lazy\" width=\"480\" height=\"360\" style=\"width:100%;height:auto;\">\r\n        <div class=\"play-button\"><\/div>\r\n    <\/div><\/center><br \/>\nPraegu saavutab Iridium ideaaltingimustes andmeedastuskiirus 352 Kbit\/s, ja aasta l\u00f5puks plaanitakse t\u00f5sta see 704\/352 Kbit\/s (vastuv\u00f5tt ja edastus). Kuid reaalsed v\u00e4\u00e4rtused on loomulikult madalamad. H\u00e4\u00e4lkommunikatsiooni kvaliteet pole just parim, esinevad moonutused. <\/p>\n<p><img decoding=\"async\" alt=\"Kosmoseside s\u00fcsteemide v\u00f5rdlus\" src=\"\/wp-content\/uploads\/2019\/04\/8fd6e3f4d0c4003a751fa0359a80741c.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nIridium toetab otsest suhtlust satelliitide vahel, mist\u00f5ttu v\u00f5ib s\u00fcsteem formaalselt toimida ilma paljude erinevates riikides asuvate p\u00e4\u00e4stekeemiate jaamadeta interneti ja maapealse telefoniv\u00f5rgu andmete edastamiseks, erinevalt GlobalStar'ist. Kogu liiklus edastatakse satelliitv\u00f5rgu kaudu peap\u00e4\u00e4stekeemija jaama, mis asub Ameerika \u00dchendriikides. Kuid t\u00f5en\u00e4oliselt ehitatakse siiski p\u00e4\u00e4stekeemia jaamu \u00fchenduse usaldusv\u00e4\u00e4rsuse tagamiseks, ehkki mitte nii palju.<\/p>\n<p>Iridiumi telefonid on turu \u00fcks kallimaid, kuid nad pakuvad rikkalikku varustust ja v\u00f5imalusi. Saadaval on niiskusmodemid ja seadmed tekstip\u00f5hiseks suhtlemiseks (kordades odavam kui h\u00e4\u00e4lside). Andmete edastamiseks l\u00e4bi Iridiumi on lisaks telefonile vajalik arvuti, millele on paigaldatud originaalne Iridium Data Kit tarkvara. Selle satelliitv\u00f5rgu teenused on kallimad kui konkurentidel. N\u00e4iteks aastane kupong 250 minutiks Venemaal maksab 28 700 rubla, kahekuuline kupong 150 minutiks kogu maailmas maksab 17 400 rubla. J\u00e4rgnevatel tasulistel plaanidel on \u00fche minuti k\u00f5ne hind alates 58 rubla, SMS 22 rubla ning kuutasu alates 12 000 rubla (alla kuue kuu) ja alates 3100 rubla (\u00fcle kuue kuu). Erakordselt ei s\u00f5lmi firma hetkel roamingulepinguid, seet\u00f5ttu ei saa GSM-teenuse pakkujate SIM-kaarte Iridiumi seadmetes kasutada, vaid ainult \u201eoma\u201c kaarte.<\/p>\n<h3>GlobalStar<\/h3>\n<p>\nGlobalStar satelliidid lendavad 1400 km k\u00f5rgusel ja nende orbiitide kallutus on 52o. Satellitid ei vaheta omavahel andmeid, seet\u00f5ttu kuulub s\u00fcsteemi ka v\u00f5rgustik jaamahste, mis teenivad \u00fchendusena satelliitide, interneti ja maapealse telefoniv\u00f5rgu vahel.<\/p>\n<p>Punasega on m\u00e4rgitud Iridium satelliidid, sinisega \u2014 GlobalStar:<\/p>\n<p><center><div class=\"youtube-placeholder\" data-id=\"t9dn48KXzks\" onclick=\"loadVideo(this)\">\r\n        <img decoding=\"async\" src=\"https:\/\/img.youtube.com\/vi\/t9dn48KXzks\/hqdefault.jpg\" alt=\"Vaata videot\" loading=\"lazy\" width=\"480\" height=\"360\" style=\"width:100%;height:auto;\">\r\n        <div class=\"play-button\"><\/div>\r\n    <\/div><\/center><br \/>\nGlobalStar'i katvus on tagasihoidlikum \u2014 ulatub kuni 70o p\u00f5hja- ja l\u00f5unapolaarsusest, seega poolpolaarsed alad ei kuulu selle v\u00f5rgu katte alla. Siiski, arvustuste kohaselt v\u00f5ib katvus teistel laiuskraadidel olla ebastabiilne. Kui satelliit on otse n\u00e4ha, siis ei tohiks teil olla mingeid probleeme \u00fchendusega. Andmeedastuskiirus GlobalStar'is on madalam kui Iridium'il, kuid helikvaliteet h\u00e4\u00e4lk\u00f5nes on v\u00f5rreldav mobiiltelefoni k\u00f5nega.<\/p>\n<p><img decoding=\"async\" alt=\"Kosmoseside s\u00fcsteemide v\u00f5rdlus\" src=\"\/wp-content\/uploads\/2019\/04\/926e08aec2d67871fbb53c9fef48d473.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nV\u00f5rgustik toetab ametlikult CDMA ja GSM standardeid, kuid praktikas ei t\u00f6\u00f6ta k\u00f5ik v\u00e4ravajaamad GSM-iga, kuigi meie riigis pole see probleem. Enamikus riikides saab tavaliste mobiilioperaatorite SIM-kaarte sisestada GlobalStariga \u00fchilduvatesse telefonidesse. GlobalStar seadmed on oluliselt odavamad kui Iridiumi omad. M\u00fc\u00fcgil on erineva keerukusega telefone, seadmeid tekstisuhtluseks mehaanilise klaviatuuriga, hotspot'e, j\u00e4lgureid, mida saab paigaldada transporti v\u00f5i kanda isiklikult, ja palju muud. Kuutasu puudub ning sidehinnad on madalamad kui Iridiumil: n\u00e4iteks kuue kuu perioodiks m\u00f5eldud k\u00f5nepakett Venemaal 250 minutiga maksab 9 800 rubla, j\u00e4relmaksutariifides on minut hind alates 44 rubla, SMS maksab 4 rubla, interneti\u00fchendus algab 13 rubla v\u00e4\u00e4rtusest.<\/p>\n<h3>\u00abGonec\u00bb<\/h3>\n<p>\nSelle s\u00fcsteemi satelliidid tiirlevad \u00fcmber planeedi k\u00f5rgusel 1500 km orbiitidel, mille kalle on 82,5\u00b0. Seet\u00f5ttu on maapinna katmine t\u00e4ielik, kuid mitte korraga.<\/p>\n<p><center><div class=\"youtube-placeholder\" data-id=\"7dF6WJwxyAg\" onclick=\"loadVideo(this)\">\r\n        <img decoding=\"async\" src=\"https:\/\/img.youtube.com\/vi\/7dF6WJwxyAg\/hqdefault.jpg\" alt=\"Vaata videot\" loading=\"lazy\" width=\"480\" height=\"360\" style=\"width:100%;height:auto;\">\r\n        <div class=\"play-button\"><\/div>\r\n    <\/div><\/center><br \/>\nVenemaal on rajatud 3 v\u00e4ravajaama (ning \u00fcks on kavandatud), mis \u00fchendavad satelliidi grupeeringu internetiga.<\/p>\n<p><img decoding=\"async\" alt=\"Kosmoseside s\u00fcsteemide v\u00f5rdlus\" src=\"\/wp-content\/uploads\/2019\/04\/f2e8dce5b0f9e1c2b19a43bfd93be39e.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nHuvitav on see, et \u201eGonets\u201c ei konkureeri teiste h\u00e4\u00e4lte side s\u00fcsteemidega. Selle asemel on Vene projekt spetsialiseerunud tekstis\u00f5numite saatmisele. Selleks on vaja osta tellimusseade ja antenn ning \u00fchendada nendega nutitelefon, s\u00fclearvuti v\u00f5i lauaarvuti. L\u00fchidalt \u2013 introvertide unistus: k\u00f5ik suhtlus toimub ainult vestluskanalis, ilma ootamatute k\u00f5nedeta.<\/p>\n<p><img decoding=\"async\" alt=\"Kosmoseside s\u00fcsteemide v\u00f5rdlus\" src=\"\/wp-content\/uploads\/2019\/04\/9e9b1a3d664e9bbd4492898b82b31f5f.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nSamuti pakub \u201eGonets\u201c M2M-side teenuseid, et automaatselt j\u00e4lgida erinevate objektide, nii statsionaarsete kui ka liikuvate, olekuteavet ja telemeetriat.<\/p>\n<p><img decoding=\"async\" alt=\"Kosmoseside s\u00fcsteemide v\u00f5rdlus\" src=\"\/wp-content\/uploads\/2019\/04\/143b49b2e13718b8bca2adfc9befb4f7.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nLisaks on saadaval t\u00e4iendavad teenused, nagu transpordi geokoordinaatide edastamine ja teavituste saatmine. <\/p>\n<p>Side teenused v\u00f5rgu kaudu makstakse tellimustasu alusel \u2013 p\u00f5him\u00f5tteliselt on need ettemakstud kuu paketid kilobaitide kohta. N\u00e4iteks, kui tellimustasuta, maksab iga edastatud andmekilobait 26 rubla ja on terve rida pakette alates 470 rubla (30 KB) kuni 8 650 rubla (2 000 KB). Lisaks 10 rubla iga v\u00e4ljuva s\u00f5numi eest Venemaa mobiilside v\u00f5rkudes. Iga kilobait \u00fcletades limiiti maksab eraldi, vahemikus 11 kuni 26 rubla. <\/p>\n<h1>Mida valida?<\/h1>\n<p>\nMeie soovid on sellised: varustada \"pilves\" server j\u00e4lgimisseadmestiku ja satelliidi kaudu andmete edastamise mooduliga. Teoreetiliselt v\u00f5ivad need omadused pakkuda k\u00f5ik kolm v\u00f5rku. Oleme juba soetanud modemid Iridium ja GlobalStar, ning seade \"Goncas\" on meie poole teel. R\u00e4\u00e4gime kindlasti meie side s\u00fcsteemist l\u00e4hemalt \u00fches tulevases postituses.<\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/12.ruvds.com\/\"><img decoding=\"async\" alt=\"Kosmoseside s\u00fcsteemide v\u00f5rdlus\" src=\"\/wp-content\/uploads\/2019\/04\/8f97dd64736b9bf4c1e4a5bf121445af.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/p>\n<p>Kutsume teid <noindex><a rel=\"nofollow\" href=\"https:\/\/12.ruvds.com\/\">osalemiseks<\/a><\/noindex> meie eksperimendis, et arvata zondi maandumiskoht ja v\u00f5ita peaauhind \u2014 reis Baikonuri.<\/p>\n<p>\u00c4rge lahkuge!<\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/ruvds.com\/ru-rub\/#order\"><img decoding=\"async\" alt=\"Kosmoseside s\u00fcsteemide v\u00f5rdlus\" src=\"\/wp-content\/uploads\/2019\/04\/392da47c30371107afa35e5d28c256e6.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><br \/>\n<br \/>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/ruvds\/blog\/446708\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0414\u0440\u0443\u0437\u044c\u044f, \u043a\u0430\u043a \u0432\u044b \u0443\u0436\u0435 \u0437\u043d\u0430\u0435\u0442\u0435, \u043c\u044b \u043d\u0430 \u0432\u0441\u0435\u0445 \u043f\u0430\u0440\u0430\u0445 \u0433\u043e\u0442\u043e\u0432\u0438\u043c \u043d\u043e\u0432\u044b\u0439 \u0433\u0438\u043a-\u043f\u0440\u043e\u0435\u043a\u0442 \u2014 \u00ab\u0421\u0435\u0440\u0432\u0435\u0440 \u0432 \u043e\u0431\u043b\u0430\u043a\u0430\u0445 2.0\u00bb, \u0438\u043b\u0438 \u00ab\u041a\u043e\u0441\u043c\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0426\u041e\u0414\u00bb. \u0412 \u0434\u0432\u0443\u0445 \u0441\u043b\u043e\u0432\u0430\u0445: 12 \u0430\u043f\u0440\u0435\u043b\u044f \u043c\u044b \u0437\u0430\u043f\u0443\u0441\u0442\u0438\u043c \u0441\u0430\u043c\u043e\u043f\u0430\u043b\u044c\u043d\u044b\u0439 \u0441\u0435\u0440\u0432\u0430\u0447\u043e\u043a \u043d\u0430 \u0441\u0442\u0440\u0430\u0442\u043e\u0441\u0442\u0430\u0442\u0435 \u043d\u0430 \u0432\u044b\u0441\u043e\u0442\u0443 \u043e\u043a\u043e\u043b\u043e 30 \u043a\u043c, \u0431\u0443\u0434\u0435\u043c \u043f\u0435\u0440\u0435\u0434\u0430\u0432\u0430\u0442\u044c \u043d\u0430 \u043d\u0435\u0433\u043e \u0434\u0430\u043d\u043d\u044b\u0435 \u0447\u0435\u0440\u0435\u0437 \u0441\u0438\u0441\u0442\u0435\u043c\u0443 \u043a\u043e\u0441\u043c\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0441\u0432\u044f\u0437\u0438, \u0430 \u0441 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u0442\u0440\u0430\u043d\u0441\u043b\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0434\u0430\u043d\u043d\u044b\u0435 \u043d\u0430 \u0417\u0435\u043c\u043b\u044e \u043f\u043e \u0440\u0430\u0434\u0438\u043e\u0441\u0432\u044f\u0437\u0438. \u0418 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