{"id":9790,"date":"2023-08-25T00:00:00","date_gmt":"2023-08-25T00:00:00","guid":{"rendered":"https:\/\/tech-lib.eu\/tech\/rychlost-internetu-na-iss-zkoumani-pripojeni-ve-vesmiru\/"},"modified":"2023-08-25T00:00:00","modified_gmt":"2023-08-25T00:00:00","slug":"rychlost-internetu-na-iss-zkoumani-pripojeni-ve-vesmiru","status":"publish","type":"post","link":"https:\/\/tech-lib.eu\/tech\/rychlost-internetu-na-iss-zkoumani-pripojeni-ve-vesmiru\/","title":{"rendered":"Rychlost internetu na ISS. Zkoum\u00e1n\u00ed p\u0159ipojen\u00ed ve vesm\u00edru"},"content":{"rendered":"
\n
Jak rychle let\u00ed ISS?<\/div>\n
Stanice je um\u00edst\u011bna na n\u00edzk\u00e9 ob\u011b\u017en\u00e9 dr\u00e1ze Zem\u011b ve v\u00fd\u0161ce kolem 400 km. P\u0159i pr\u016fm\u011brn\u00e9 rychlosti okolo 7 700 m\/s (27 720 km\/h) pak pravideln\u011b ob\u00edh\u00e1 Zemi s periodou cca 92 minut.<\/div>\n
\n\t\t\t\t\t Dal\u0161\u00ed informace najdete na<\/span> cs.wikipedia.org<\/a>\n\t\t\t\t<\/div>\n<\/p><\/div>\n
\n
<\/div>\n

Mezin\u00e1rodn\u00ed vesm\u00edrn\u00e1 stanice (ISS), kter\u00e1 je v\u00fddobytkem sou\u010dasn\u00e9ho in\u017een\u00fdrstv\u00ed a reprezentac\u00ed glob\u00e1ln\u00ed spolupr\u00e1ce p\u0159i v\u00fdzkumu vesm\u00edru, je z\u00e1zrakem techniky. N\u011bkdo by se mohl pt\u00e1t, jak astronauti udr\u017euj\u00ed kontakt se Zem\u00ed, zat\u00edmco prov\u00e1d\u011bj\u00ed v\u011bdeck\u00fd v\u00fdzkum a pob\u00fdvaj\u00ed na vesm\u00edrn\u00e9 stanici. V tomto p\u0159\u00edsp\u011bvku se pod\u00edv\u00e1me na rychlost internetu na Mezin\u00e1rodn\u00ed vesm\u00edrn\u00e9 stanici a prozkoum\u00e1me ot\u00e1zky spojen\u00e9 s WiFi, rychlost\u00ed internetu NASA, komunikac\u00ed na ISS a faktory, kter\u00e9 p\u0159isp\u00edvaj\u00ed k vysok\u00e9 rychlosti. <\/p>\n

Je WiFi na ISS spolehliv\u00e1? <\/div>\n

I kdy\u017e je na ISS p\u0159\u00edstup k internetu, je nutn\u00e9 si uv\u011bdomit, \u017ee se nejedn\u00e1 o b\u011b\u017enou s\u00ed\u0165 WiFi. Na rozd\u00edl od n\u00e1s na Zemi nemaj\u00ed astronauti na ISS p\u0159\u00edm\u00fd p\u0159\u00edstup k internetu. M\u00edsto toho se spol\u00e9haj\u00ed na slo\u017eitou s\u00ed\u0165 vz\u00e1jemn\u011b propojen\u00fdch komunika\u010dn\u00edch kan\u00e1l\u016f, kter\u00e9 vytv\u00e1\u0159ej\u00ed spojen\u00ed. Tyto syst\u00e9my vyu\u017e\u00edvaj\u00ed vysokofrekven\u010dn\u00ed r\u00e1diov\u00e9 vlny, satelity a pozemn\u00ed sledovac\u00ed stanice. Hlavn\u00edmi \u00fa\u010dely spojen\u00ed jsou p\u0159enos dat na Zemi a komunikace s \u0159\u00edzen\u00edm mise. Jak rychle NASA vyu\u017e\u00edv\u00e1 WiFi? <\/p>\n

<\/div>\n

I na pozemsk\u00e9 pom\u011bry je rychlost internetu poskytovan\u00e9ho NASA \u00fa\u017easn\u00e1. Internetov\u00e9 p\u0159ipojen\u00ed na ISS m\u016f\u017ee pracovat rychlost\u00ed a\u017e 300 megabit\u016f za sekundu (Mbps). Pro kontext si uv\u011bdomme, \u017ee typick\u00e1 rychlost internetu v dom\u00e1cnostech na Zemi je n\u011bkde kolem 100 Mbps. D\u00edky tomuto rychl\u00e9mu p\u0159ipojen\u00ed mohou astronauti prov\u00e1d\u011bt v\u00fdzkum, komunikovat se sv\u00fdmi rodinami a dokonce pou\u017e\u00edvat soci\u00e1ln\u00ed s\u00edt\u011b. Jak rychl\u00e1 je komunikace mezi ISS? <\/p>\n

<\/div>\n

ISS vyu\u017e\u00edv\u00e1 krom\u011b internetov\u00e9ho p\u0159ipojen\u00ed tak\u00e9 \u0159adu komunika\u010dn\u00edch metod pro hlasovou a video komunikaci. Prim\u00e1rn\u00ed komunikaci mezi ISS a \u0159\u00edzen\u00edm mise na Zemi zaji\u0161\u0165uje s\u00ed\u0165 geostacion\u00e1rn\u00edch dru\u017eic. Komunikaci v re\u00e1ln\u00e9m \u010dase umo\u017e\u0148uje ob\u011b\u017en\u00e1 dr\u00e1ha t\u011bchto dru\u017eic, kter\u00e1 se nach\u00e1z\u00ed 22 000 mil nad rovn\u00edkem planety. Toto bezprobl\u00e9mov\u00e9 spojen\u00ed mezi astronauty a pozemn\u00ed kontrolou je mo\u017en\u00e9 d\u00edky prakticky okam\u017eit\u00e9 rychlosti t\u00e9to komunikace. Pro\u010d je rychlost ISS tak vysok\u00e1? <\/p>\n

<\/div>\n

Za rychl\u00fd internet a komunikaci mohou z velk\u00e9 \u010d\u00e1sti vynikaj\u00edc\u00ed technologie a infrastruktura pou\u017e\u00edvan\u00e1 na ISS. Aby mohla slou\u017eit n\u00e1rok\u016fm astronaut\u016f a v\u011bdeck\u00fdm studi\u00edm prov\u00e1d\u011bn\u00fdm na stanici, vynalo\u017eila NASA zna\u010dn\u00e9 investice na vytvo\u0159en\u00ed spolehliv\u00fdch komunika\u010dn\u00edch syst\u00e9m\u016f. P\u0159enos dat v re\u00e1ln\u00e9m \u010dase, videokonference a vzd\u00e1len\u00e9 \u0159\u00edzen\u00ed experiment\u016f vy\u017eaduj\u00ed rychl\u00e9 p\u0159ipojen\u00ed. Spolehliv\u00e1 a rychl\u00e1 komunika\u010dn\u00ed s\u00ed\u0165 je nezbytn\u00e1 i pro v\u00fdzkum vesm\u00edru, aby byl zaru\u010den \u00fasp\u011bch a bezpe\u010dnost mise. <\/p>\n

<\/div>\n

Z\u00e1v\u011brem lze \u0159\u00edci, \u017ee rychlost internetu na ISS, kter\u00e1 m\u016f\u017ee p\u0159es\u00e1hnout 300 Mb\/s, je \u00fa\u017easn\u00e1. P\u0159esto\u017ee je WiFi na ISS jin\u00e9 ne\u017e na Zemi, umo\u017e\u0148uje astronaut\u016fm z\u016fstat v kontaktu, prov\u00e1d\u011bt v\u00fdzkum a komunikovat s \u0159\u00edzen\u00edm mise. ISS m\u00e1 plynul\u00e9 a rychl\u00e9 p\u0159ipojen\u00ed d\u00edky investic\u00edm NASA do nejmodern\u011bj\u0161\u00edch komunika\u010dn\u00edch technologi\u00ed a infrastruktury, kter\u00e9 spl\u0148uj\u00ed pot\u0159eby v\u011bdeck\u00e9 komunity i astronaut\u016f. Spojen\u00ed na palub\u011b ISS bude i nad\u00e1le kl\u00ed\u010dovou sou\u010d\u00e1st\u00ed \u017eivota na ob\u011b\u017en\u00e9 dr\u00e1ze, proto\u017ee posouv\u00e1me hranice v\u00fdzkumu vesm\u00edru.<\/p><\/div>\n

\n
FAQ<\/div>\n
\n
Je \u010das na ISS pomalej\u0161\u00ed?<\/div>\n

Na Mezin\u00e1rodn\u00ed vesm\u00edrn\u00e9 stanici (ISS) nen\u00ed \u010das pomalej\u0161\u00ed. A\u010dkoli rychlost i gravitace mohou ovliv\u0148ovat \u010das, rozd\u00edl v dilataci \u010dasu pozorovan\u00fd na ISS je podle Einsteinovy teorie relativity minim\u00e1ln\u00ed. Existuje velmi mal\u00e1 dilatace \u010dasu zp\u016fsoben\u00e1 ob\u00edh\u00e1n\u00edm ISS kolem Zem\u011b rychlost\u00ed p\u0159ibli\u017en\u011b 28 000 kilometr\u016f za hodinu (17 500 mil za hodinu), kter\u00e1 v\u0161ak nen\u00ed pro astronauty na palub\u011b vn\u00edmateln\u00e1. V d\u016fsledku toho se zd\u00e1, \u017ee \u010das na ISS plyne podobn\u011b jako na Zemi. <\/p>\n<\/div>\n

\n
Jak je mo\u017en\u00e9, \u017ee NASA pou\u017e\u00edv\u00e1 WiFi tak rychle?<\/div>\n

D\u00edky \u0159ad\u011b prom\u011bnn\u00fdch je WiFi NASA na palub\u011b Mezin\u00e1rodn\u00ed vesm\u00edrn\u00e9 stanice (ISS) extr\u00e9mn\u011b rychl\u00e1. Za prv\u00e9, rychl\u00e1 satelitn\u00ed komunika\u010dn\u00ed s\u00ed\u0165 spojuje ISS p\u0159\u00edmo s pozemn\u00edm internetem. Ve srovn\u00e1n\u00ed s b\u011b\u017en\u00fdmi s\u00edt\u011bmi WiFi to umo\u017e\u0148uje spolehliv\u011bj\u0161\u00ed p\u0159ipojen\u00ed s velkou \u0161\u00ed\u0159kou p\u00e1sma. <\/p>\n

<\/div>\n

Krom\u011b toho NASA vyu\u017e\u00edv\u00e1 nejmodern\u011bj\u0161\u00ed n\u00e1stroje a technologie, kter\u00e9 zlep\u0161uj\u00ed konektivitu a rychlost WiFi na palub\u011b ISS. K zaji\u0161t\u011bn\u00ed efektivn\u00edho p\u0159enosu dat vyu\u017e\u00edv\u00e1 specializovan\u00e9 sm\u011brova\u010de, ant\u00e9ny a zesilova\u010de sign\u00e1lu. Tyto syst\u00e9my berou v \u00favahu prom\u011bnn\u00e9, jako je radiace a mikrogravitace, proto\u017ee jsou vytvo\u0159eny pro fungov\u00e1n\u00ed ve zvl\u00e1\u0161tn\u00edm prost\u0159ed\u00ed vesm\u00edru. <\/p>\n

<\/div>\n

Krom\u011b toho NASA \u010dasto aktualizuje sv\u016fj internetov\u00fd syst\u00e9m, aby udr\u017eela krok s nov\u00fdm technick\u00fdm v\u00fdvojem. Investuje do nejmodern\u011bj\u0161\u00edch komunika\u010dn\u00edch za\u0159\u00edzen\u00ed, aby zv\u00fd\u0161ila rychlost a spolehlivost WiFi s\u00edt\u011b a umo\u017enila astronaut\u016fm efektivn\u00ed p\u0159\u00edstup k informac\u00edm, komunikaci s \u0159\u00edzen\u00edm mise a prov\u00e1d\u011bn\u00ed v\u00fdzkumu. <\/p>\n

<\/div>\n

Celkov\u011b lze \u0159\u00edci, \u017ee kombinace prom\u011bnn\u00fdch, v\u010detn\u011b p\u0159\u00edm\u00e9ho spojen\u00ed s internetem ze Zem\u011b, nejmodern\u011bj\u0161\u00ed technologie a neust\u00e1l\u00e9ho zlep\u0161ov\u00e1n\u00ed komunika\u010dn\u00ed infrastruktury, vedla k rychl\u00e9 WiFi s\u00edti NASA na ISS. <\/p>\n<\/div>\n

\n
Maj\u00ed na ISS Netflix?<\/div>\n

Ano, Netflix je astronaut\u016fm na Mezin\u00e1rodn\u00ed vesm\u00edrn\u00e9 stanici (ISS) k dispozici. D\u00edky rychl\u00e9mu internetu na ISS mohou streamovat filmy a televizn\u00ed po\u0159ady, v\u010detn\u011b obsahu ze slu\u017eeb, jako je Netflix. Je d\u016fle\u017eit\u00e9 m\u00edt na pam\u011bti, \u017ee kvalita streamov\u00e1n\u00ed nemus\u00ed b\u00fdt tak dobr\u00e1 jako na Zemi kv\u016fli omezen\u00ed \u0161\u00ed\u0159ky p\u00e1sma a dal\u0161\u00edm technologick\u00fdm omezen\u00edm.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Jak rychle let\u00ed ISS? Stanice je um\u00edst\u011bna na n\u00edzk\u00e9 ob\u011b\u017en\u00e9 dr\u00e1ze Zem\u011b ve v\u00fd\u0161ce kolem 400 km. P\u0159i pr\u016fm\u011brn\u00e9 rychlosti okolo 7 700 m\/s (27 720 km\/h) pak pravideln\u011b ob\u00edh\u00e1 Zemi s periodou cca 92 minut. Dal\u0161\u00ed informace najdete na cs.wikipedia.org Mezin\u00e1rodn\u00ed vesm\u00edrn\u00e1 stanice (ISS), kter\u00e1 je v\u00fddobytkem sou\u010dasn\u00e9ho in\u017een\u00fdrstv\u00ed a reprezentac\u00ed glob\u00e1ln\u00ed spolupr\u00e1ce p\u0159i … \u010c\u00edst d\u00e1l<\/a><\/p>\n","protected":false},"author":1317,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[139],"tags":[],"class_list":["post-9790","post","type-post","status-publish","format-standard","hentry","category-pripojeni-k-internetu"],"_links":{"self":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/posts\/9790","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/users\/1317"}],"replies":[{"embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/comments?post=9790"}],"version-history":[{"count":0,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/posts\/9790\/revisions"}],"wp:attachment":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/media?parent=9790"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/categories?post=9790"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/tags?post=9790"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}