{"id":63,"date":"2022-06-13T09:54:39","date_gmt":"2022-06-13T09:54:39","guid":{"rendered":"https:\/\/opengis.vn\/?p=63"},"modified":"2024-03-28T09:18:09","modified_gmt":"2024-03-28T02:18:09","slug":"quy-dao-cuc-va-quy-dao-dia-tinh-cua-ve-tinh-khac-nhau-nhu-the-nao","status":"publish","type":"post","link":"https:\/\/opengis.vn\/en\/blog\/quy-dao-cuc-va-quy-dao-dia-tinh-cua-ve-tinh-khac-nhau-nhu-the-nao\/","title":{"rendered":"Qu\u1ef9 \u0111\u1ea1o c\u1ef1c v\u00e0 qu\u1ef9 \u0111\u1ea1o \u0111\u1ecba t\u0129nh c\u1ee7a v\u1ec7 tinh kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o?"},"content":{"rendered":"<h2>Qu\u1ef9 \u0111\u1ea1o c\u1ef1c (polar orbit)<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/user-images.githubusercontent.com\/72865384\/173326404-d562619d-8fac-415b-a59e-4df7f3b63075.png\" alt=\"Polar-Orbit-678x328\" \/><\/p>\n<p>\u0110\u00fang nh\u01b0 t\u00ean g\u1ecdi, c\u00e1c v\u1ec7 tinh c\u00f3 qu\u1ef9 \u0111\u1ea1o c\u1ef1c <strong>\u0111i qua c\u00e1c v\u00f9ng c\u1ef1c c\u1ee7a Tr\u00e1i \u0111\u1ea5t t\u1eeb B\u1eafc xu\u1ed1ng Nam<\/strong>. <\/p>\n<p>C\u00e1c qu\u1ef9 \u0111\u1ea1o n\u00e0y ch\u1ee7 y\u1ebfu \u1edf <strong>\u0111\u1ed9 cao th\u1ea5p t\u1eeb 200 \u0111\u1ebfn 1000 km<\/strong>. Khi v\u1ec7 tinh \u0111ang \u1edf tr\u00ean qu\u1ef9 \u0111\u1ea1o, Tr\u00e1i \u0111\u1ea5t \u0111ang quay b\u00ean d\u01b0\u1edbi n\u00f3, k\u1ebft qu\u1ea3 l\u00e0 m\u1ed9t v\u1ec7 tinh c\u00f3 th\u1ec3 quan s\u00e1t g\u1ea7n nh\u01b0 to\u00e0n b\u1ed9 b\u1ec1 m\u1eb7t Tr\u00e1i \u0111\u1ea5t trong kho\u1ea3ng th\u1eddi gian 24 gi\u1edd.<\/p>\n<p>C\u00e1c qu\u1ef9 \u0111\u1ea1o c\u1ef1c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 <strong>quan s\u00e1t Tr\u00e1i \u0111\u1ea5t<\/strong>, c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 gi\u00e1m s\u00e1t c\u00e2y tr\u1ed3ng, r\u1eebng v\u00e0 th\u1eadm ch\u00ed l\u00e0 an ninh to\u00e0n c\u1ea7u. N\u1ebfu m\u1ed9t v\u1ec7 tinh \u1edf tr\u00ean qu\u1ef9 \u0111\u1ea1o c\u1ef1c \u1edf \u0111\u1ed9 cao 800 km, n\u00f3 s\u1ebd di chuy\u1ec3n v\u1edbi t\u1ed1c \u0111\u1ed9 x\u1ea5p x\u1ec9 7,5 km\/s.<\/p>\n<p>=&gt; V\u1ec7 tinh qu\u1ef9 \u0111\u1ea1o c\u1ef1c c\u00f3 th\u1ec3 cung c\u1ea5p \u1ea3nh c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i kh\u00f4ng gian cao nh\u01b0ng \u0111\u1ed9 ph\u00e2n gi\u1ea3i th\u1eddi gian th\u01b0\u1eddng kh\u00f4ng t\u1ed1t.<\/p>\n<p>V\u00ed d\u1ee5: V\u1ec7 tinh Landsat, SPOT, NOAA, Worldview\u2026<\/p>\n<h2>Qu\u1ef9 \u0111\u1ea1o \u0111\u1ecba t\u0129nh (geostationary orbit)<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/user-images.githubusercontent.com\/72865384\/173327298-a2809746-74d3-4d10-b552-378d3a66753c.png\" alt=\"Geostationary-Orbit-678x328\" \/><\/p>\n<p>Qu\u1ef9 \u0111\u1ea1o \u0111\u1ecba t\u0129nh l\u00e0 qu\u1ef9 \u0111\u1ea1o <strong>v\u00f2ng quanh Tr\u00e1i \u0111\u1ea5t ph\u00eda tr\u00ean \u0111\u01b0\u1eddng x\u00edch \u0111\u1ea1o theo chi\u1ec1u t\u1eeb T\u00e2y sang \u0110\u00f4ng<\/strong> \u1edf <strong>\u0111\u1ed9 cao kho\u1ea3ng 36.000 km<\/strong>. B\u1edfi v\u00ec n\u00f3 quay theo v\u00f2ng quay Tr\u00e1i \u0111\u1ea5t, m\u1ea5t 23 gi\u1edd 56 ph\u00fat v\u00e0 4 gi\u00e2y, c\u00e1c v\u1ec7 tinh theo qu\u1ef9 \u0111\u1ea1o \u0111\u1ecba t\u0129nh d\u01b0\u1eddng nh\u01b0 lu\u00f4n gi\u1eef t\u1ea1i m\u1ed9t v\u1ecb tr\u00ed c\u1ed1 \u0111\u1ecbnh. T\u1ed1c \u0111\u1ed9 c\u1ee7a ch\u00fang l\u00e0 kho\u1ea3ng 3 km\/s.<\/p>\n<p>Do c\u00e1c v\u1ec7 tinh tr\u00ean qu\u1ef9 \u0111\u1ea1o \u0111\u1ecba t\u0129nh li\u00ean t\u1ee5c bao ph\u1ee7 m\u1ed9t ph\u1ea7n l\u1edbn Tr\u00e1i \u0111\u1ea5t n\u00ean \u0111\u00e2y l\u00e0 qu\u1ef9 \u0111\u1ea1o l\u00fd t\u01b0\u1edfng cho <strong>vi\u1ec5n th\u00f4ng<\/strong> ho\u1eb7c theo d\u00f5i c\u00e1c ki\u1ec3u <strong>th\u1eddi ti\u1ebft<\/strong> v\u00e0 <strong>\u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng<\/strong> tr\u00ean to\u00e0n l\u1ee5c \u0111\u1ecba.<\/p>\n<p>=&gt; V\u1ec7 tinh qu\u1ef9 \u0111\u1ea1o \u0111\u1ecba t\u0129nh bao ph\u1ee7 m\u1ed9t di\u1ec7n t\u00edch l\u1edbn b\u1ec1 m\u1eb7t Tr\u00e1i \u0110\u1ea5t v\u1edbi \u0111\u1ed9 ph\u00e2n gi\u1ea3i th\u1eddi gian cao tuy nhi\u00ean \u0111\u1ed9 ph\u00e2n gi\u1ea3i kh\u00f4ng gian l\u1ea1i th\u1ea5p.<\/p>\n<p>V\u00ed d\u1ee5: V\u1ec7 tinh GOES, METEOSAT, GMS\u2026<\/p>\n<h2>Video m\u00f4 t\u1ea3 2 d\u1ea1ng qu\u1ef9 \u0111\u1ea1o:<\/h2>\n<p><iframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/Irxg-9svRtc\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/p>\n<p>Ngo\u00e0i ra c\u00f2n c\u00f3 c\u00e1c lo\u1ea1i qu\u1ef9 \u0111\u1ea1o kh\u00e1c nh\u01b0: qu\u1ef9 \u0111\u1ea1o \u0111\u1ecba \u0111\u1ed3ng b\u1ed9, qu\u1ef9 \u0111\u1ea1o b\u00e1n \u0111\u1ed3ng b\u1ed9, qu\u1ef9 \u0111\u1ea1o \u0111\u1ed3ng b\u1ed9 m\u1eb7t tr\u1eddi\u2026<\/p>\n<h4>References:<\/h4>\n<p><a href=\"http:\/\/www.esa.int\/Our_Activities\/Space_Transportation\/Types_of_orbits\">http:\/\/www.esa.int\/Our_Activities\/Space_Transportation\/Types_of_orbits<\/a><br \/>\n<a href=\"https:\/\/gisgeography.com\/geosynchronous-geostationary-orbits\/\">https:\/\/gisgeography.com\/geosynchronous-geostationary-orbits\/<\/a><br \/>\n<a href=\"https:\/\/gisgeography.com\/polar-orbit-sun-synchronous-orbit\/\">https:\/\/gisgeography.com\/polar-orbit-sun-synchronous-orbit\/<\/a><br \/>\n<a href=\"https:\/\/earthobservatory.nasa.gov\/features\/OrbitsCatalog\/page2.php\">https:\/\/earthobservatory.nasa.gov\/features\/OrbitsCatalog\/page2.php<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Qu\u1ef9 \u0111\u1ea1o c\u1ef1c (polar orbit) \u0110\u00fang nh\u01b0 t\u00ean g\u1ecdi, c\u00e1c v\u1ec7 tinh c\u00f3 qu\u1ef9 \u0111\u1ea1o c\u1ef1c \u0111i qua c\u00e1c v\u00f9ng c\u1ef1c c\u1ee7a Tr\u00e1i \u0111\u1ea5t t\u1eeb B\u1eafc xu\u1ed1ng&#8230; <\/p>","protected":false},"author":2,"featured_media":67,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[15,17,18,16,11],"class_list":["post-63","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vien-tham-share","tag-quy-dao","tag-quy-dao-cuc","tag-quy-dao-dia-tinh","tag-ve-tinh","tag-vien-tham"],"_links":{"self":[{"href":"https:\/\/opengis.vn\/en\/wp-json\/wp\/v2\/posts\/63","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/opengis.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/opengis.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/opengis.vn\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/opengis.vn\/en\/wp-json\/wp\/v2\/comments?post=63"}],"version-history":[{"count":2,"href":"https:\/\/opengis.vn\/en\/wp-json\/wp\/v2\/posts\/63\/revisions"}],"predecessor-version":[{"id":68,"href":"https:\/\/opengis.vn\/en\/wp-json\/wp\/v2\/posts\/63\/revisions\/68"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/opengis.vn\/en\/wp-json\/wp\/v2\/media\/67"}],"wp:attachment":[{"href":"https:\/\/opengis.vn\/en\/wp-json\/wp\/v2\/media?parent=63"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/opengis.vn\/en\/wp-json\/wp\/v2\/categories?post=63"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/opengis.vn\/en\/wp-json\/wp\/v2\/tags?post=63"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}