{"id":28675,"date":"2019-07-24T20:30:00","date_gmt":"2019-07-24T13:30:00","guid":{"rendered":"https:\/\/ttud.com.vn\/?p=28675"},"modified":"2021-10-03T20:31:05","modified_gmt":"2021-10-03T13:31:05","slug":"radar-ve-tinh-moi-co-do-phan-giai-cao-co-the-phat-hien-nguy-co-cau-sap","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/radar-ve-tinh-moi-co-do-phan-giai-cao-co-the-phat-hien-nguy-co-cau-sap\/","title":{"rendered":"Radar v\u1ec7 tinh m\u1edbi c\u00f3 \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n nguy c\u01a1 c\u1ea7u s\u1eadp"},"content":{"rendered":"\n<p>C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u t\u1ea1i Ph\u00f2ng th\u00ed nghi\u1ec7m \u0110\u1ed9ng c\u01a1 ph\u1ea3n l\u1ef1c c\u1ee7a NASA (JPL) v\u00e0 \u0110\u1ea1i h\u1ecdc Bath \u0111\u00e3 ph\u00e1t tri\u1ec3n \u0111\u01b0\u1ee3c m\u1ed9t h\u1ec7 th\u1ed1ng c\u1ea3nh b\u00e1o s\u1edbm d\u1ef1a v\u00e0o v\u1ec7 tinh \u0111\u1ec3 ph\u00e1t hi\u1ec7n ra nh\u1eefng chuy\u1ec3n \u0111\u1ed9ng nh\u1ecf trong nh\u1eefng c\u00e2y c\u1ea7u khi\u1ebfn cho c\u1ea7u s\u1eadp.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.vista.gov.vn\/vn-uploads\/news\/2019_7\/8_10.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>K\u1ebft h\u1ee3p d\u1eef li\u1ec7u t\u1eeb v\u1ec7 tinh th\u1ebf h\u1ec7 m\u1edbi v\u1edbi thu\u1eadt to\u00e1n tinh vi, h\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u00ednh ph\u1ee7 ho\u1eb7c c\u00e1c chuy\u00ean gia s\u1eed d\u1ee5ng nh\u01b0 h\u1ec7 th\u1ed1ng c\u1ea3nh b\u00e1o \u0111\u1ea3m b\u1ea3o s\u1ef1 an to\u00e0n cho c\u00e1c d\u1ef1 \u00e1n h\u1ea1 t\u1ea7ng quy m\u00f4 l\u1edbn.<\/p>\n\n\n\n<p>Nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 x\u00e1c minh k\u1ef9 thu\u1eadt n\u00e0y b\u1eb1ng c\u00e1ch xem l\u1ea1i h\u00ecnh \u1ea3nh v\u1ec7 tinh trong v\u00f2ng 15 n\u0103m c\u1ee7a c\u1ea7u Morandi \u1edf Genova, \u00dd, m\u1ed9t ph\u1ea7n c\u1ee7a c\u00e2y c\u1ea7u b\u1ecb s\u1eadp v\u00e0o th\u00e1ng 8\/2018, khi\u1ebfn 43 ng\u01b0\u1eddi thi\u1ec7t m\u1ea1ng. \u0110\u00e1nh gi\u00e1 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 tr\u00ean t\u1ea1p ch\u00ed&nbsp;<em>Remote Sensing<\/em>&nbsp;cho th\u1ea5y chi\u1ebfc c\u1ea7u n\u00e0y \u0111\u00e3 c\u00f3 d\u1ea5u hi\u1ec7u cong v\u00eanh nhi\u1ec1u th\u00e1ng tr\u01b0\u1edbc khi th\u1ea3m k\u1ecbch x\u1ea3y ra.<\/p>\n\n\n\n<p>TS. Giorgia Giardina, \u0111\u1ed3ng t\u00e1c gi\u1ea3 nghi\u00ean c\u1ee9u cho bi\u1ebft: &#8220;<em>T\u00ecnh tr\u1ea1ng c\u1ee7a c\u00e2y c\u1ea7u \u0111\u00e3 \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o tr\u01b0\u1edbc \u0111\u00f3, nh\u01b0ng \u0111\u00e2y l\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean nh\u1edd s\u1eed d\u1ee5ng th\u00f4ng tin t\u1eeb v\u1ec7 tinh, ch\u00fang ta c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y s\u1ef1 bi\u1ebfn d\u1ea1ng c\u1ee7a c\u1ea7u tr\u01b0\u1edbc khi n\u00f3 s\u1eadp. Ch\u00fang t\u00f4i \u0111\u00e3 ch\u1ee9ng minh c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 n\u00e0y, c\u1ee5 th\u1ec3 l\u00e0 k\u1ebft h\u1ee3p d\u1eef li\u1ec7u kh\u00e1c nhau t\u1eeb c\u00e1c v\u1ec7 tinh v\u1edbi m\u1ed9t m\u00f4 h\u00ecnh to\u00e1n h\u1ecdc \u0111\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c d\u1ea5u hi\u1ec7u s\u1edbm s\u1ef1 s\u1ee5p \u0111\u1ed5 ho\u1eb7c bi\u1ebfn d\u1ea1ng<\/em>&#8220;.<\/p>\n\n\n\n<p>C\u00e1c k\u1ef9 thu\u1eadt gi\u00e1m s\u00e1t c\u1ea5u tr\u00fac hi\u1ec7n nay d\u00f9 c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n ra c\u00e1c d\u1ea5u hi\u1ec7u chuy\u1ec3n \u0111\u1ed9ng trong c\u00e2y c\u1ea7u ho\u1eb7c t\u00f2a nh\u00e0, nh\u01b0ng ch\u1ec9 t\u1eadp trung v\u00e0o c\u00e1c \u0111i\u1ec3m c\u1ee5 th\u1ec3 c\u00f3 \u0111\u1eb7t c\u1ea3m bi\u1ebfn. K\u1ef9 thu\u1eadt m\u1edbi c\u00f3 th\u1ec3 theo d\u00f5i trong th\u1eddi gian th\u1ef1c g\u1ea7n nh\u01b0 to\u00e0n b\u1ed9 c\u1ea5u tr\u00fac.<\/p>\n\n\n\n<p>Theo TS. Pietro Milillo, t\u00e1c gi\u1ea3 ch\u00ednh c\u1ee7a nghi\u00ean c\u1ee9u, k\u1ef9 thu\u1eadt c\u1ee7a nh\u00f3m nghi\u00ean c\u1ee9u c\u00f3 s\u1ef1 c\u1ea3i ti\u1ebfn h\u01a1n so v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n th\u1ed1ng v\u00ec cho ph\u00e9p c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e1nh gi\u00e1 s\u1ef1 thay \u0111\u1ed5i c\u1ee7a bi\u1ebfn d\u1ea1ng m\u1eb7t \u0111\u1ea5t tr\u00ean m\u1ed9t h\u1ea1 t\u1ea7ng duy nh\u1ea5t v\u1edbi t\u1ea7n su\u1ea5t v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c ch\u01b0a t\u1eebng c\u00f3. \u0110i\u1ec1u n\u00e0y li\u00ean quan \u0111\u1ebfn s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a k\u1ef9 thu\u1eadt m\u1edbi h\u1ed7 tr\u1ee3 x\u00e1c \u0111\u1ecbnh t\u00ecnh tr\u1ea1ng c\u1ee7a c\u00e2y c\u1ea7u v\u00e0 h\u1ea1 t\u1ea7ng kh\u00e1c.<\/p>\n\n\n\n<p>K\u1ef9 thu\u1eadt m\u1edbi \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n nh\u1edd nh\u1eefng ti\u1ebfn b\u1ed9 trong c\u00f4ng ngh\u1ec7 v\u1ec7 tinh, c\u1ee5 th\u1ec3 l\u00e0 s\u1eed d\u1ee5ng k\u1ebft h\u1ee3p ch\u00f2m sao COSMO-SkyMed c\u1ee7a C\u01a1 quan V\u0169 tr\u1ee5 \u00dd (ASI) v\u00e0 c\u00e1c v\u1ec7 tinh Sentinel-1a v\u00e0 1b c\u1ee7a C\u01a1 quan V\u0169 tr\u1ee5 ch\u00e2u \u00c2u, cho ph\u00e9p thu th\u1eadp d\u1eef li\u1ec7u ch\u00ednh x\u00e1c h\u01a1n. D\u1eef li\u1ec7u Radar kh\u1ea9u \u0111\u1ed9 t\u1ed5ng h\u1ee3p ch\u00ednh x\u00e1c (SAR), khi \u0111\u01b0\u1ee3c thu th\u1eadp t\u1eeb nhi\u1ec1u v\u1ec7 tinh \u0111\u01b0\u1ee3c \u1edf c\u00e1c g\u00f3c \u0111\u1ed9 kh\u00e1c nhau, c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e2y d\u1ef1ng h\u00ecnh \u1ea3nh 3D v\u1ec1 t\u00f2a nh\u00e0, c\u00e2y c\u1ea7u ho\u1eb7c \u0111\u01b0\u1eddng ph\u1ed1.<\/p>\n\n\n\n<p>TS. Giardina n\u00f3i th\u00eam: &#8220;<em>Tr\u01b0\u1edbc \u0111\u00e2y, c\u00e1c v\u1ec7 tinh m\u00e0 ch\u00fang t\u00f4i \u0111\u00e3 s\u1eed d\u1ee5ng cho nghi\u00ean c\u1ee9u n\u00e0y, c\u00f3 th\u1ec3 t\u1ea1o ra h\u00ecnh \u1ea3nh radar ch\u00ednh x\u00e1c trong kho\u1ea3ng 1cm. B\u00e2y gi\u1edd, ch\u00fang t\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng d\u1eef li\u1ec7u ch\u00ednh x\u00e1c trong v\u00f2ng 1mm v\u00e0 th\u1eadm ch\u00ed t\u1ed1t h\u01a1n trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n ph\u00f9 h\u1ee3p. Gi\u1edd \u0111\u00e2y, ch\u00fang t\u00f4i \u0111\u00e3 \u0111\u1ea1t m\u1ee9c \u0111\u1ed9 chi ti\u1ebft c\u1ea7n thi\u1ebft \u0111\u1ec3 gi\u00e1m s\u00e1t c\u00e1c c\u1ea5u tr\u00fac m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. R\u00f5 r\u00e0ng, ti\u1ec1m n\u0103ng n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng li\u00ean t\u1ee5c cho c\u00e1c c\u1ea5u tr\u00fac l\u1edbn. C\u00e1c c\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3 c\u00f3 chi ph\u00ed th\u1ea5p h\u01a1n so v\u1edbi gi\u00e1m s\u00e1t theo ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n th\u1ed1ng v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng. Th\u00f4ng th\u01b0\u1eddng, b\u1ea1n c\u1ea7n c\u00e0i \u0111\u1eb7t c\u1ea3m bi\u1ebfn t\u1ea1i c\u00e1c \u0111i\u1ec3m c\u1ee5 th\u1ec3 trong t\u00f2a nh\u00e0, nh\u01b0ng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 th\u1ec3 gi\u00e1m s\u00e1t nhi\u1ec1u \u0111i\u1ec3m c\u00f9ng m\u1ed9t l\u00fac<\/em>&#8220;.<\/p>\n\n\n\n<p>K\u1ef9 thu\u1eadt m\u1edbi c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gi\u00e1m s\u00e1t chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a c\u00e1c c\u1ea5u tr\u00fac khi c\u00e1c ho\u1ea1t \u0111\u1ed9ng thi c\u00f4ng d\u01b0\u1edbi l\u00f2ng \u0111\u1ea5t di\u1ec5n ra nh\u01b0 khoan trong \u0111\u01b0\u1eddng h\u1ea7m.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u t\u1ea1i Ph\u00f2ng th\u00ed nghi\u1ec7m \u0110\u1ed9ng c\u01a1 ph\u1ea3n l\u1ef1c c\u1ee7a NASA (JPL) v\u00e0 \u0110\u1ea1i h\u1ecdc Bath \u0111\u00e3 ph\u00e1t tri\u1ec3n \u0111\u01b0\u1ee3c m\u1ed9t h\u1ec7 th\u1ed1ng c\u1ea3nh b\u00e1o s\u1edbm d\u1ef1a v\u00e0o v\u1ec7 tinh \u0111\u1ec3 ph\u00e1t hi\u1ec7n ra nh\u1eefng chuy\u1ec3n \u0111\u1ed9ng nh\u1ecf trong nh\u1eefng c\u00e2y c\u1ea7u khi\u1ebfn cho c\u1ea7u s\u1eadp. K\u1ebft h\u1ee3p d\u1eef li\u1ec7u t\u1eeb v\u1ec7 [&hellip;]<\/p>\n","protected":false},"author":23,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-28675","post","type-post","status-publish","format-standard","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/28675","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/23"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=28675"}],"version-history":[{"count":1,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/28675\/revisions"}],"predecessor-version":[{"id":28677,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/28675\/revisions\/28677"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=28675"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=28675"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=28675"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}