{"id":1252,"date":"2016-08-09T13:21:51","date_gmt":"2016-08-09T16:21:51","guid":{"rendered":"https:\/\/www.nachodelatorre.com.ar\/mosconi\/?p=1252"},"modified":"2016-08-09T13:21:51","modified_gmt":"2016-08-09T16:21:51","slug":"curso-de-navegacion-astronomica-para-que","status":"publish","type":"post","link":"https:\/\/www.fie.undef.edu.ar\/ceptm\/?p=1252","title":{"rendered":"Curso de navegaci\u00f3n astron\u00f3mica, \u00bfPara qu\u00e9?"},"content":{"rendered":"

Imaginar la vida sin GPS, \u00a0para los navegantes y artilleros mas viejos\u00a0\u00a0no es extra\u00f1o , pero para\u00a0\u00a0los m\u00e1s j\u00f3venes, es dif\u00edcil. Pensemos\u00a0que por cualquier raz\u00f3n el GPS \u00a0(o cualquier GNSS que usemos\u00a0)\u00a0 es repentinamente inasequible. En la US NAVY los cursos de navegaci\u00f3n astron\u00f3mica fueron retirados del\u00a0\u00a0plan de estudios en la Academia Naval de los EE.UU. a finales de 1990, por considerarlos anticuados\u00a0. Ahora , nuevamente se reconoce la\u00a0\u00a0importancia de proporcionar a los futuros oficiales de la Armada la capacidad de encontrar su posici\u00f3n en el mar en caso de que el GPS no est\u00e1 disponible por\u00a0\u00a0guerra electr\u00f3nica , \u00a0interferencia o \u00a0pirater\u00eda.\u00a0 Despu\u00e9s de todo, un antiguo sextante no puede ser interferido.<\/p>\n

\"Sextant-PD-300\"Imagine life without GPS. For those of us old enough, that might not be hard to do. For younger people, it\u2019s almost unimaginable. Now imagine that GPS \u2014 for whatever reason \u2014 is suddenly unavailable. What if you\u2019re not on land, where printed maps are filled with landmarks? What else do you rely on?<\/p>\n

Before GPS, early explorers navigated by the stars using celestial navigation and a sextant, the same basic techniques that guided ancient Polynesians in the open Pacific and Magellan around the world (the first sextant device was invented in 1757 by John Bird).<\/p>\n

As Don Jewell describes in his gripping Defense PNT newsletter column \u201cLost Over the Pacific<\/a>,\u201d a massive electrical failure on his aircraft caused the crew to rely on his skills navigating with a sextant. \u201cThe crew regarded me with some skepticism as they realized I intended to use an old-fashioned sextant to determine the speed and heading and then navigate a multi-hundred-million-dollar modern reconnaissance aircraft,\u201d he recalls.<\/p>\n

Despite its usefulness when things go sideways, celestial navigation was pulled from the curriculum at the U.S. Naval Academy in the late 1990s, considered \u201coutdated.\u201d The course time was replaced with GPS and electronic navigation. Among the fleet, the Navy ended training in celestial navigation in 2006. A similar course at the U.S. Coast Guard Academy ended 10 years ago, but some instruction remains in theories of celestial navigation, and cadets use a sextant aboard the tall ship Eagle.<\/p>\n

Now, however, what\u2019s old is new again. The Naval Academy has brought back celestial navigation courses, recognizing the importance of giving future naval officers the ability to find their position out at sea in case GPS is unavailable through jamming or hacking.<\/p>\n

After all, an old-fashioned sextant can\u2019t be hacked.<\/p>\n

Fuente:<\/strong>\u00a0 http:\/\/gpsworld.com<\/em><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Imaginar la vida sin GPS, \u00a0para los navegantes y artilleros mas viejos\u00a0\u00a0no es extra\u00f1o , pero para\u00a0\u00a0los m\u00e1s j\u00f3venes, es dif\u00edcil. Pensemos\u00a0que por cualquier raz\u00f3n… <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[2,35,29],"tags":[],"_links":{"self":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/1252"}],"collection":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1252"}],"version-history":[{"count":0,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/1252\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1252"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1252"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1252"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}