{"id":3696,"date":"2019-11-30T18:37:37","date_gmt":"2019-11-30T18:37:37","guid":{"rendered":"http:\/\/adenilsongiovanini.com.br\/blog\/?p=3696"},"modified":"2022-08-04T11:45:15","modified_gmt":"2022-08-04T11:45:15","slug":"efemerides","status":"publish","type":"post","link":"https:\/\/adenilsongiovanini.com.br\/blog\/efemerides\/","title":{"rendered":"Efem\u00e9rides: como baixar e utilizar no seu dia a dia"},"content":{"rendered":"<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">O que s\u00e3o <strong>efem\u00e9rides<\/strong>? Para que servem? Quais os diferentes tipos de efem\u00e9rides existentes? Quando utilizar cada um dos diferentes tipos e quanto tempo \u00e9 necess\u00e1rio esperar para isso?<\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Estas s\u00e3o algumas d\u00favidas comuns dos profissionais que est\u00e3o come\u00e7ando a trabalhar com o <span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/www.youtube.com\/watch?v=Gd6gFiCbbKM\" target=\"_blank\" rel=\"noopener noreferrer\">posicionamento pelo GNSS<\/a><\/span>.<\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Por causa disso, eu decidi escrever este artigo. Leia o mesmo atentamente porque aqui voc\u00ea encontrar\u00e1 simplesmente tudo que precisa aprender sobre dados ef\u00eameros.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Em sua ess\u00eancia, as efem\u00e9rides nada mais s\u00e3o do que:<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>&#8220;<em>Dados que informam as \u00f3rbitas dos sat\u00e9lites e a precis\u00e3o dos rel\u00f3gios dos mesmos!<\/em>&#8220;<\/strong><\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Existem maneiras distintas de se obter tais informa\u00e7\u00f5es, sendo que quanto maior for a precis\u00e3o almejada para as coordenadas dos sat\u00e9lites, mais tempo se faz necess\u00e1rio esperar.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Veja os diferentes tipos de efem\u00e9rides existentes e suas caracter\u00edsticas.<\/span><\/p>\n<p>\n<\/p>\n<p style=\"text-align: center;\"><span style=\"color: #000000; font-size: 24px; font-family: arial, helvetica, sans-serif;\"><strong>Efem\u00e9rides transmitidas<\/strong><\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-size: 20px;\"><img decoding=\"async\" class=\"aligncenter wp-image-3699 size-large\" src=\"https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-transmitidas-780x439.jpg\" alt=\"efem\u00e9rides transmitidas\" width=\"780\" height=\"439\" srcset=\"https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-transmitidas-780x439.jpg 780w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-transmitidas-300x169.jpg 300w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-transmitidas-768x432.jpg 768w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-transmitidas.jpg 1280w\" sizes=\"(max-width: 780px) 100vw, 780px\" \/><\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Tamb\u00e9m conhecidas como efem\u00e9rides radiodifundidas, consistem em um conjunto de 16 a 20 elementos que definem a trajet\u00f3ria elipsoidal de cada <span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/pt.wikipedia.org\/wiki\/Sat%C3%A9lite\" target=\"_blank\" rel=\"noopener noreferrer\">sat\u00e9lite<\/a><\/span>.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Os mesmos as enviam no bloco 2 da mensagem de navega\u00e7\u00e3o, sendo que as efem\u00e9rides transmitidas s\u00e3o capazes de determinar a posi\u00e7\u00e3o do sat\u00e9lite que as envia.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Al\u00e9m disso, na mensagem de navega\u00e7\u00e3o tamb\u00e9m s\u00e3o adicionadas informa\u00e7\u00f5es a respeito:<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Do estado de conserva\u00e7\u00e3o do sat\u00e9lite;<\/span><\/li>\n<li><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Da sincroniza\u00e7\u00e3o de tempo;<\/span><\/li>\n<li><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">De retardos atmosf\u00e9ricos.<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Tamb\u00e9m \u00e9 fornecido o <span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/www.cnpm.embrapa.br\/projetos\/sat\/conteudo\/missao_gps.html\" target=\"_blank\" rel=\"noopener noreferrer\">almanaque<\/a><\/span>, que possibilita posicionar toda a constela\u00e7\u00e3o. Isso mesmo que o receptor consiga receber dados somente de um \u00fanico sat\u00e9lite.<\/span><\/p>\n<p><span style=\"font-size: 20px;\"><span style=\"color: #000000; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">O almanaque se atualiza a cada 6 meses, por\u00e9m, a precis\u00e3o \u00e9 t\u00e3o baixa que permite ao receptor saber, preste aten\u00e7\u00e3o:<\/span> <span style=\"color: #000000; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>&#8220;<em>Apenas a posi\u00e7\u00e3o aproximada de cada sat\u00e9lite com o qual n\u00e3o tem vis\u00e3o direta.<\/em>&#8220;<\/strong><\/span><\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">A partir dos dados informados pelo almanaque o receptor ir\u00e1 calcular a posi\u00e7\u00e3o do sat\u00e9lite em determinado instante.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Por\u00e9m, como disse, o almanaque serve somente para que no momento que o receptor seja ligado tenha a informa\u00e7\u00e3o da posi\u00e7\u00e3o aproximada dos diferentes sat\u00e9lites em \u00f3rbita.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Com isso o receptor identificar\u00e1 quais sat\u00e9lites devem estar vis\u00edveis, conseguindo rastrear os dados dos mesmos mais rapidamente.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Ou seja, o almanaque n\u00e3o possibilita o c\u00e1lculo das <span style=\"color: #0000ff;\"><a href=\"https:\/\/adenilsongiovanini.com.br\/blog\/tipos-de-coordenadas-geograficas\/\" style=\"color: #0000ff;\">coordenadas<\/a><\/span> dos diferentes sat\u00e9lites em \u00f3rbita.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">As efem\u00e9rides transmitidas por sua vez, embora possibilitem o c\u00e1lculo das \u00f3rbitas dos sat\u00e9lites, possibilitam uma <span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"http:\/\/www.ppegeo.igc.usp.br\/index.php\/GEOSP\/article\/view\/12644\" target=\"_blank\" rel=\"noopener noreferrer\">precis\u00e3o posicional<\/a><\/span> de 1 metro e seus rel\u00f3gios uma precis\u00e3o de 5 <span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/www.convertworld.com\/pt\/tempo\/nanosegundos.html\" target=\"_blank\" rel=\"noopener noreferrer\">nanosegundos<\/a><\/span>.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Na pr\u00e1tica, isso significa que as efem\u00e9rides transmitidas acabam sendo as menos precisas, n\u00e3o podendo ser utilizadas na topografia e no georreferenciamento.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Por\u00e9m, as mesmas s\u00e3o muito \u00fateis em outros servi\u00e7os que n\u00e3o exigem tanta acur\u00e1cia posicional, justamente por serem as \u00fanicas transmitidas em tempo real.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Na realidade, perceba que devido as suas caracter\u00edsticas, as efem\u00e9rides transmitidas s\u00e3o \u00f3timas para aplica\u00e7\u00f5es que requerem um posicionamento instant\u00e2neo e n\u00e3o requerem <span style=\"color: #0000ff;\"><a href=\"http:\/\/adenilsongiovanini.com.br\/blog\/precisao-e-acuracia-tudo-que-voce-precisa-saber-a-respeito\/\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color: #0000ff;\">dados t\u00e3o acurados<\/a><\/span>.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Isso \u00e9 uma caracter\u00edstica do <span style=\"color: #0000ff;\"><a href=\"https:\/\/adenilsongiovanini.com.br\/operador-de-gnss\/\" style=\"color: #0000ff;\">posicionamento pelo GNSS<\/a><\/span>. Por exemplo, o comprimento C\/A n\u00e3o possibilita uma acur\u00e1cia t\u00e3o boa, por\u00e9m, possibilita o c\u00e1lculo de uma posi\u00e7\u00e3o aproximada em tempo real, justamente pelo fato de utilizar as efem\u00e9rides transmitidas.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">O segmento que calcula as efem\u00e9rides transmitidas e envia as mesmas para os sat\u00e9lites atrav\u00e9s de uma s\u00e9rie de antenas terrestres \u00e9 o segmento de controle.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Todos os outros tipos de efem\u00e9rides s\u00e3o calculadas pelo segmento terrestre de rastreamento independente que define a posi\u00e7\u00e3o dos sat\u00e9lites atrav\u00e9s das coordenadas dos mesmos em instantes determinados.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Exemplo de t\u00edtulo de arquivo contendo as efem\u00e9rides transmitidas:<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>IGNE0460.15N<\/strong><\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>IGNE<\/strong> \u2013 Caracteres que identificam a esta\u00e7\u00e3o.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>046<\/strong> \u2013 Dia do ano (001 a 366)<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>0<\/strong> \u2013 Hora do dia<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>.15N<\/strong> \u2013 Ano 2015, GPS-NAVSTAR \u2013 15G ano 2015 GLONASS<\/span><\/p>\n<p>\n<\/p>\n<h2 style=\"text-align: center;\"><span style=\"font-size: 24px;\"><strong><span style=\"color: #000000; font-family: arial, helvetica, sans-serif;\">Efem\u00e9rides ultrarr\u00e1pidas, previstas<\/span><\/strong><\/span><\/h2>\n<p><span style=\"font-size: 20px;\"><img decoding=\"async\" class=\"aligncenter wp-image-3700 size-large\" src=\"https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-r\u00e1pidas-780x640.png\" alt=\"efem\u00e9rides r\u00e1pidas\" width=\"780\" height=\"640\" srcset=\"https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-r\u00e1pidas-780x640.png 780w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-r\u00e1pidas-300x246.png 300w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-r\u00e1pidas-768x630.png 768w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-r\u00e1pidas.png 1080w\" sizes=\"(max-width: 780px) 100vw, 780px\" \/> <span style=\"color: #000000; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Estas efem\u00e9rides s\u00e3o emitidas pelo <span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"http:\/\/www.igs.org\/\" target=\"_blank\" rel=\"noopener noreferrer\">IGS (International GNSS Service)<\/a><\/span> em tempo real que atualiza as mesmas nos seguintes hor\u00e1rios: 03, 09, 15 e 21 horas UTC.<\/span><\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">As precis\u00f5es variam, por\u00e9m chegam a alcan\u00e7ar 5 cm nas \u00f3rbitas dos sat\u00e9lites e 3 nanosegundos nos rel\u00f3gios dos sat\u00e9lites.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Exemplo de t\u00edtulo de arquivo contendo as efem\u00e9rides ultrarr\u00e1pidas previstas:<\/span><\/p>\n<p>\n<span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>cod18320.EPH_5D<\/strong><\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>COD<\/strong> \u2013 C\u00f3digo GPS + GLONASS<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>1832<\/strong> \u2013 Semana GPS que come\u00e7a em 01\/01\/1980<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>0<\/strong> \u2013 Dia da semana GPS<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>.EPH_P<\/strong> \u2013 Engloba as 24 horas do dia.<\/span><\/p>\n<h2 style=\"text-align: center;\"><span style=\"font-size: 24px;\"><strong><span style=\"color: #000000; font-family: arial, helvetica, sans-serif;\">Efem\u00e9rides ultrarr\u00e1pidas, observadas<\/span><\/strong><\/span><\/h2>\n<p><span style=\"font-size: 20px;\"><img decoding=\"async\" class=\"aligncenter wp-image-3701 size-large\" src=\"https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-observadas-780x378.jpg\" alt=\"efem\u00e9rides observadas\" width=\"780\" height=\"378\" srcset=\"https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-observadas-780x378.jpg 780w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-observadas-300x145.jpg 300w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-observadas-768x372.jpg 768w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-observadas.jpg 897w\" sizes=\"(max-width: 780px) 100vw, 780px\" \/> <span style=\"color: #000000; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">O IGS Publica conjuntamente as efem\u00e9rides previstas e observadas a cada 6 horas. As mesmas s\u00e3o atualizadas nos seguintes hor\u00e1rios: 00, 06, 12 e 18 H UTC.<\/span><\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Cada uma das mesmas possui informa\u00e7\u00f5es de 48 horas, sendo 24 horas anteriores a publica\u00e7\u00e3o e 24 horas posteriores a publica\u00e7\u00e3o. O tempo de demora para a publica\u00e7\u00e3o \u00e9 entre 3 e 9 horas.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Exemplo de t\u00edtulo de arquivo contendo as efem\u00e9rides ultrarr\u00e1pidas combinadas:<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>igu18320_00.sp3<\/strong><\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>igu<\/strong> \u2013 Efem\u00e9rides ultrarr\u00e1pidas da IGS, somente GPS.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>1832<\/strong> \u2013 Semana GPS que come\u00e7a em 01\/01\/1980<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>0<\/strong> \u2013 Dia da semana<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>_00<\/strong> \u2013 Hora de come\u00e7o das 48 horas.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>sp3<\/strong> \u2013 Precis\u00e3o padr\u00e3o vers\u00e3o 3.<\/span><\/p>\n<p>\n<\/p>\n<h2 style=\"text-align: center;\"><span style=\"color: #000000; font-size: 24px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>Efem\u00e9rides r\u00e1pidas<\/strong><\/span><\/h2>\n<p><span style=\"font-size: 20px;\"><img decoding=\"async\" class=\"aligncenter wp-image-3702 size-large\" src=\"https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-r\u00e1pidas-2-780x377.jpg\" alt=\"efem\u00e9rides r\u00e1pidas 2\" width=\"780\" height=\"377\" srcset=\"https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-r\u00e1pidas-2-780x377.jpg 780w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-r\u00e1pidas-2-300x145.jpg 300w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-r\u00e1pidas-2-768x372.jpg 768w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-r\u00e1pidas-2.jpg 899w\" sizes=\"(max-width: 780px) 100vw, 780px\" \/><\/span><\/p>\n<p><span style=\"font-size: 20px;\"> <span style=\"color: #000000; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Publicadas pela IGS entre 17 e 41 horas ap\u00f3s a passagem do sat\u00e9lite, todos os dias, as 17 horas <span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/pt.wikipedia.org\/wiki\/Tempo_Universal_Coordenado\" target=\"_blank\" rel=\"noopener noreferrer\">UTC (Tempo universal Coordenado)<\/a><\/span>.<\/span><\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">A previs\u00e3o das \u00f3rbitas dos sat\u00e9lites \u00e9 de 2,5 cm e a precis\u00e3o dos rel\u00f3gios e das esta\u00e7\u00f5es de controle \u00e9 de 75 picosegundos.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Exemplo de t\u00edtulo de arquivo contendo as efem\u00e9rides r\u00e1pidas:<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>igr18320.sp3<\/strong><\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>igr<\/strong> \u2013 Efem\u00e9rides r\u00e1pidas da IGS, somente GPS.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>1832<\/strong> \u2013 Semana GPS que come\u00e7a em 01\/01\/1980<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>0<\/strong> \u2013 Dia da semana (Domingo = 0, segunda =1, ter\u00e7a = 2\u2026s\u00e1bado=6)<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>_00<\/strong> \u2013 Hora de come\u00e7o das 48 horas.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>sp3<\/strong> \u2013 Precis\u00e3o padr\u00e3o vers\u00e3o 3<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Perceba que 2,5 cm \u00e9 abaixo do que a legisla\u00e7\u00e3o exige para processos de georreferenciamento.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Ou seja, posi\u00e7\u00f5es calculadas com a utiliza\u00e7\u00e3o das efem\u00e9rides r\u00e1pidas podem ser utilizadas no <span style=\"color: #0000ff;\"><a href=\"http:\/\/adenilsongiovanini.com.br\/blog\/georreferenciamento-imoveis-rurais\/\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color: #0000ff;\">georreferenciamento de Im\u00f3veis Rurais<\/a><\/span>.<\/span><\/p>\n<p>\n<\/p>\n<h2 style=\"text-align: center;\"><span style=\"color: #000000; font-size: 24px; font-family: arial, helvetica, sans-serif;\"><strong>Efem\u00e9rides finais<\/strong><\/span><\/h2>\n<p><span style=\"font-size: 20px;\"><img decoding=\"async\" class=\"aligncenter wp-image-3703 size-large\" src=\"https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-finais-780x487.png\" alt=\"efem\u00e9rides finais\" width=\"780\" height=\"487\" srcset=\"https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-finais-780x487.png 780w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-finais-300x187.png 300w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-finais-768x480.png 768w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/efem\u00e9rides-finais.png 797w\" sizes=\"(max-width: 780px) 100vw, 780px\" \/><\/span><\/p>\n<p><span style=\"font-size: 20px;\"> <span style=\"color: #000000; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">O IGS publica as <strong>efem\u00e9rides finais<\/strong> entre 12 e 18 dias ap\u00f3s a observa\u00e7\u00e3o, todas as quinta-feiras.<\/span><\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Isso significa que para utilizar as efem\u00e9rides finais voc\u00ea precisa esperar a primeira quinta-feira, 12 a 18 dias ap\u00f3s a realiza\u00e7\u00e3o do levantamento dos dados.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">Exemplo de t\u00edtulo de arquivo contendo as efem\u00e9rides finais:<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>igs18231.sp3<\/strong><\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>igs<\/strong> \u2013 Efem\u00e9rides finais do IGS, somente GPS.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>1823<\/strong> \u2013 Semana GPS que come\u00e7a em 01\/01\/1980<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>1<\/strong> \u2013 Dia da semana (Domingo = 0, segunda =1, ter\u00e7a = 2\u2026s\u00e1bado=6)<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>_00<\/strong> \u2013 Hora de come\u00e7o das 48 horas.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\"><strong>sp3<\/strong> \u2013 Precis\u00e3o padr\u00e3o vers\u00e3o 3<\/span><\/p>\n<h2 style=\"text-align: center;\"><span style=\"font-size: 24px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\"><strong>Principais institui\u00e7\u00f5es que calculam e difundem os dados Ef\u00eameros<\/strong><\/span><\/h2>\n<p>&nbsp;<\/p>\n<h3 style=\"text-align: center;\"><span style=\"font-size: 20px;\"><strong><span style=\"font-family: arial, helvetica, sans-serif; color: #000000;\">Efem\u00e9rides &#8211; International GNSS Service (IGS)<\/span><\/strong><\/span><\/h3>\n<p><span style=\"font-size: 20px;\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-3705\" src=\"http:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/IGS-control.jpg\" alt=\"IGS control\" width=\"700\" height=\"531\" srcset=\"https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/IGS-control.jpg 700w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/IGS-control-300x228.jpg 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/span><\/p>\n<p><span style=\"font-size: 20px;\"> <span style=\"font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">A IGS \u00e9 uma institui\u00e7\u00e3o sem fins lucrativos formada por mais de 200 ag\u00eancias de todo o mundo que contribuem recursos e dados de esta\u00e7\u00f5es <span style=\"color: #0000ff;\"><a href=\"https:\/\/adenilsongiovanini.com.br\/blog\/gps-rtk-oferta-imbativel-veja\/\" style=\"color: #0000ff;\">GPS<\/a><\/span> e <span style=\"color: #0000ff;\"><a href=\"https:\/\/adenilsongiovanini.com.br\/blog\/glonass-historico-caracteristicas-e-aplicacoes\/\" style=\"color: #0000ff;\">GLONASS<\/a><\/span> com a finalidade de obter produtos GPS e GLONASS precisos.<\/span><\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">A pr\u00f3pria IGS na descri\u00e7\u00e3o presente em seu site traz o seguinte texto:<\/span><\/p>\n<blockquote style=\"border: 2px double #009900; background: #f0fff0 none repeat scroll 0% 0%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial; color: #323232; padding-left: 15px; padding-top: 10px; padding-bottom: 10px;\">\n<p style=\"text-align: left;\"><span style=\"color: #000000; font-size: 20px; font-family: arial, helvetica, sans-serif; line-height: 1.3;\">\u201c<em>A IGS est\u00e1 comprometido em proporcionar dados e produtos de m\u00e1xima qualidade como padr\u00e3o para a navega\u00e7\u00e3o por sat\u00e9lite em apoio a investiga\u00e7\u00f5es cientificas da terra, aplica\u00e7\u00f5es multidisciplinares e educacionais.<\/em>\u201d<\/span><\/p>\n<\/blockquote>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">A mesma \u00e9 considerada a comunidade civil internacional de m\u00e1xima precis\u00e3o GNSS.<\/span><\/p>\n<h4 style=\"text-align: center;\"><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000;\"><strong>Esta\u00e7\u00f5es IGS pelo mundo<\/strong><\/span><\/h4>\n<p><span style=\"font-size: 20px;\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-3704\" src=\"http:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/IGS.jpg\" alt=\"IGS\" width=\"720\" height=\"369\" srcset=\"https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/IGS.jpg 720w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/IGS-300x154.jpg 300w\" sizes=\"(max-width: 720px) 100vw, 720px\" \/> <span style=\"font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">A IGS coleta, arquiva e distribui livremente conjuntos de dados de observa\u00e7\u00e3o do <span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/www.decea.gov.br\/sirius\/index.php\/2011\/06\/14\/gnss-sistema-global-de-navegacao-por-satelite\/\" target=\"_blank\" rel=\"noopener noreferrer\">Sistema Global de Navega\u00e7\u00e3o por Sat\u00e9lite<\/a><\/span> (GNSS) de uma rede global de esta\u00e7\u00f5es de rastreamento terrestre operada cooperativamente.<\/span><\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">As esta\u00e7\u00f5es IGS fornecem rastreamento cont\u00ednuo usando receptores de alta precis\u00e3o e possuem instala\u00e7\u00f5es de transmiss\u00e3o de dados permitindo uma transmiss\u00e3o de dados r\u00e1pida (minimamente: di\u00e1ria) para os data centers.<\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Os dados da esta\u00e7\u00e3o s\u00e3o arquivados e distribu\u00eddos pelos Data Centers da IGS, sendo que a disponibilidade dos dados de mapas foi terceirizada para o <span style=\"color: #0000ff; line-height: 1.3;\"><a style=\"color: #0000ff;\" href=\"https:\/\/cddis.nasa.gov\/\" target=\"_blank\" rel=\"noopener noreferrer\">CDDIS<\/a><\/span> (Sistema de Informa\u00e7\u00e3o de Dados de Din\u00e2mica de Crustal).<\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Segue uma lista com as principais institui\u00e7\u00f5es que calculam e difundem dados GNSS como: <\/span><\/p>\n<ul>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Efem\u00e9rides;<\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\"> Corre\u00e7\u00f5es dos rel\u00f3gios dos sat\u00e9lites;<\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Coordenadas das esta\u00e7\u00f5es de seguimento e;<\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Par\u00e2metros atmosf\u00e9ricos.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">A maioria destas ag\u00eancias s\u00e3o centros de an\u00e1lises que fazem parte do IGS.<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #0000ff; line-height: 1.3;\"><a href=\"https:\/\/www.aiub.unibe.ch\/forschung\/code___analysezentrum\/index_ger.html\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color: #0000ff;\">Center For Orbit Determination in Europe (CODE)<\/a><\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #0000ff; line-height: 1.3;\"><a href=\"https:\/\/www.kasi.re.kr\/eng\/index\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color: #0000ff;\">Korea Astronomy and Space Science Intitute (KASI)<\/a><\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #0000ff; line-height: 1.3;\"><a href=\"https:\/\/www.esipfed.org\/partners\/crustal-dynamics-data-information-system-cddis\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color: #0000ff;\">Crustal Dynamics Data Information System (CDDIS)<\/a><\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #0000ff; line-height: 1.3;\"><a href=\"http:\/\/sopac-csrc.ucsd.edu\/\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color: #0000ff;\">Scripps Orbit and Permanent Array Center (SOPAC)<\/a><\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #0000ff; line-height: 1.3;\"><a href=\"http:\/\/www.ign.fr\/\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color: #0000ff;\">Institute National de I\u2019Information Geographique et Forsti\u00e8re (IGN)<\/a><\/span><\/li>\n<li><span style=\"font-size: 20px;\"><span style=\"font-family: arial, helvetica, sans-serif; color: #0000ff; line-height: 1.3;\"><a href=\"http:\/\/www.ga.gov.au\/scientific-topics\/positioning-navigation\/geodesy\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color: #0000ff;\">Australian Government Geoscience Australiana (AUSLIG)<\/a><\/span> <span style=\"font-family: arial, helvetica, sans-serif; color: #000000;\"> GNSS Data center (GDC)<\/span><\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #0000ff; line-height: 1.3;\"><a href=\"http:\/\/www.hartrao.ac.za\/\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color: #0000ff;\">Hartebeesthoek Radio Astronomy Observatory (HRAO)<\/a><\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #0000ff; line-height: 1.3;\"><a href=\"https:\/\/www.nasa.gov\/content\/johnson-space-centers-mission-control-center-1\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color: #0000ff;\">Mission Control Centre (MCC)<\/a><\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2 style=\"text-align: center;\"><span style=\"font-size: 24px;\"><strong><span style=\"font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Download de dados IGS<\/span><\/strong><\/span><\/h2>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">A IGS tem d\u00e9cadas de dados arquivados que podem ser acessados via ftp. Veja na lista abaixo os diferentes dados disponibilizados.<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000;\">Efem\u00e9rides de Sat\u00e9lite GPS \/ Rel\u00f3gios de Sat\u00e9lite e de Esta\u00e7\u00e3o;<\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000;\">Efem\u00e9rides de <span style=\"color: #0000ff;\"><a href=\"https:\/\/pt.wikipedia.org\/wiki\/GLONASS\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color: #0000ff;\">sat\u00e9lite GLONASS<\/a><\/span>;<\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000;\">Coordenadas Geoc\u00eantricas de <span style=\"color: #0000ff;\"><a href=\"https:\/\/www.ibge.gov.br\/confest_e_confege\/pesquisa_trabalhos\/CD\/oficinas\/553-2.pdf\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color: #0000ff;\">Esta\u00e7\u00f5es de Rastreamento IGS<\/a><\/span>;<\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000;\">Rota\u00e7\u00e3o da Terra;<\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000;\">Par\u00e2metros Atmosf\u00e9ricos.<\/span><\/li>\n<\/ul>\n<p>\n<span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Voc\u00ea poder\u00e1 acessar mais informa\u00e7\u00f5es referentes aos tipos de dados, precis\u00e3o, lat\u00eancia, atualiza\u00e7\u00f5es e intervalo de amostragem no segunte link:<\/span><\/p>\n<p><span style=\"color: #0000ff; font-size: 20px;\"><a style=\"color: #0000ff;\" href=\"http:\/\/www.igs.org\/products\" target=\"_blank\" rel=\"noopener noreferrer\"><span style=\"font-family: arial, helvetica, sans-serif;\">http:\/\/www.igs.org\/products<\/span> <\/a><\/span><\/p>\n<h2 style=\"text-align: center;\"><span style=\"font-size: 24px;\"><span style=\"font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\"><strong>Baixando os dados <\/strong><\/span><span style=\"color: #000000; font-family: arial, helvetica, sans-serif;\"><strong>ef\u00e9meros<\/strong><\/span><\/span><\/h2>\n<p><span style=\"font-size: 20px;\"><img decoding=\"async\" class=\"aligncenter wp-image-3706 size-large\" src=\"https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/gnss-calendar-780x641.png\" alt=\"gnss calendar\" width=\"780\" height=\"641\" srcset=\"https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/gnss-calendar-780x641.png 780w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/gnss-calendar-300x247.png 300w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/gnss-calendar-768x631.png 768w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/gnss-calendar.png 1135w\" sizes=\"(max-width: 780px) 100vw, 780px\" \/><\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Devido a facilidade de uso, o site GNSS calendar \u00e9 o meio amplamente utilizado pelos profissionais para baixar dados efem\u00earos.<\/span><\/p>\n<p><span style=\"color: #000000; font-family: arial, helvetica, sans-serif; font-size: 20px;\">Para baixar os mesmos os dados ef\u00eameros a partir do site <\/span>GNSS<span style=\"color: #000000; font-family: arial, helvetica, sans-serif; font-size: 20px;\"> Calendar \u00e9 s\u00f3 voc\u00ea acessar o link:<\/span><\/p>\n<p><span style=\"color: #0000ff; font-size: 20px;\"><a style=\"color: #0000ff;\" href=\"http:\/\/www.gnsscalendar.com\/\" target=\"_blank\" rel=\"noopener noreferrer\"><span style=\"font-family: arial, helvetica, sans-serif;\">http:\/\/www.gnsscalendar.com\/<\/span><\/a><\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Os dados disponibilizados pelo GNSS Calendar s\u00e3o:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000;\">GPS Final Orbits (IGS) \u2013 \u00d3rbitas finais do GPS (IGS);<\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000;\">GlONASS Final Orbits (CDDIS) \u2013 \u00d3rbitas Finais Glonass (CDDIS);<\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000;\">BRDC GPS Broadcast Orbits (BRDC) \u2013 \u00d3rbitas de radiodifus\u00e3o GPS BRDC (BRDC);<\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000;\">IGSCB Clock file 30 s (IGS) \u2013 Arquivo IGSCB Clock 30 s (IGS);<\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000;\">AIUB ION file \u2013 Arquivo AIUB ION (ionosfera);<\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000;\">AIUB SNX file;<\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000;\">SNX file for Week \u2013 Arquivo SNX para a semana;<\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000;\">P1C1 DCB;<\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000;\">P1P2 DCB.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Lembre-se que conforme eu informei nos t\u00f3picos anteriores, ap\u00f3s ir a campo voc\u00ea precisa esperar o tempo necess\u00e1rio at\u00e9 que os dados ef\u00eameros sejam disponibilizadas pelos diferentes \u00f3rg\u00e3os.<\/span><\/p>\n<p>\n<\/p>\n<h2 style=\"text-align: center;\"><span style=\"font-size: 24px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\"><strong>Arquivos \u00fateis adicionais fornecidos pelo site GNSS calendar<\/strong><\/span><\/h2>\n<ul>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000;\">Arquivo Antex IGS08;<\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000;\">Arquivo do tipo receptor;<\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000;\">Conversor Rinex entre vers\u00f5es rinex;<\/span><\/li>\n<li><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000;\">gLAB \u2013 Software livre para processar e analisar dados GNSS.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Para fazer o download destes arquivos, do conversor e do software \u00e9 s\u00f3 acessar o site GNSS calendar e rodar o mesmo at\u00e9 o final, na se\u00e7\u00e3o arquivos \u00fateis adicionais.<\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Por\u00e9m, faz algumas semanas que o site GNSS calendar est\u00e1 apresentando problemas. Diante disso, muitos profissionais n\u00e3o sabem como fazer para baixar dados efem\u00earos.<\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Vamos ver como fazer isso.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2 style=\"text-align: center;\"><span style=\"font-size: 24px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Baixar dados ef\u00eameros &#8211; uma alternativa ao site GNSS Calendar<\/span><\/h2>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Uma alternativa ao site GNSS calendar \u00e9 baixar as efem\u00e9rides atrav\u00e9s do site CDDIS.<\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Nesta p\u00e1gina tem todos os detalhes:<\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\"><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/cddis.nasa.gov\/Data_and_Derived_Products\/GNSS\/orbit_products.html#:~:text=IGS%20orbit%20combination%20solutions%20are,observed%20and%20predicted%20satellite%20orbits.\">https:\/\/cddis.nasa.gov\/Data_and&#8230;\/GNSS\/orbit_products.html<\/a><\/span><\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\"><br \/>\nPor\u00e9m, o processo \u00e9 um pouco mais complexo do que baixar atrav\u00e9s do GNSS Calendar. Isso porque voc\u00ea precisar\u00e1 navegar atrav\u00e9s da \u00e1rvore e encontrar os dados do dia de interesse.<\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Detalhe, os dados est\u00e3o no tempo GPS. Ou seja, o primeiro passo \u00e9 identificar a qual dia GPS o dia de interesse corresponde.<\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Voc\u00ea pode fazer isso atrav\u00e9s da ferramenta GPS time Calculator, no link:<\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\"><br \/>\n<span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/www.labsat.co.uk\/index.php\/en\/gps-time-calculator\">https:\/\/www.labsat.co.uk\/index.php\/en\/gps-time-calculator <\/a><\/span><\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\"><br \/>\nVoc\u00ea tamb\u00e9m precisar\u00e1 interpetrar o c\u00f3digo do arquivo, pois o mesmo possui uma nomenclatura especifica. O v\u00eddeo do link abaixo mostra como proceder:<\/span><\/p>\n<p><span style=\"font-size: 20px; color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/youtu.be\/_ZjYo1dt1gQ\"><span style=\"font-family: arial, helvetica, sans-serif; line-height: 1.3;\">https:\/\/youtu.be\/_ZjYo1dt1gQ<\/span><\/a><\/span><\/p>\n<h2 style=\"text-align: center;\"><span style=\"font-size: 24px; font-family: arial, helvetica, sans-serif; color: #000000;\"><strong>Como utilizar os dados ef\u00eameros<\/strong><\/span><\/h2>\n<p><span style=\"font-size: 20px;\"><img decoding=\"async\" class=\"aligncenter wp-image-3707 size-large\" src=\"https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/utilizar-efem\u00e9rides-780x416.png\" alt=\"utilizar efem\u00e9rides\" width=\"780\" height=\"416\" srcset=\"https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/utilizar-efem\u00e9rides-780x416.png 780w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/utilizar-efem\u00e9rides-300x160.png 300w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/utilizar-efem\u00e9rides-768x409.png 768w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2019\/11\/utilizar-efem\u00e9rides.png 1366w\" sizes=\"(max-width: 780px) 100vw, 780px\" \/><\/span><\/p>\n<p><span style=\"font-size: 20px;\"> <span style=\"font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">A maneira como voc\u00ea deve proceder para utilizar os dados ef\u00eameros varia de software para software.<\/span><\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Alguns softwares, como o <span style=\"color: #0000ff;\"><a href=\"http:\/\/104.131.64.55\/mirtest\/suporte.techgeo.com.br\/kb\/a48\/Controls\/index.html\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color: #0000ff;\">GTR processor<\/a><\/span>, por exemplo, buscam, baixam e utilizam automaticamente os dados ef\u00eameros, sendo que voc\u00ea deve apenas ter o cuidado de esperar o tempo necess\u00e1rio para que as efem\u00e9rides estejam dispon\u00edveis.<\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Isso porque o mesmo busca e utiliza as \u00faltimas efem\u00e9rides dispon\u00edveis.<\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">J\u00e1 outros softwares, como o <span style=\"color: #0000ff;\"><a href=\"https:\/\/informatica.mercadolivre.com.br\/topcon-tools\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color: #0000ff;\">Topcon Tools<\/a><\/span>, por exemplo, exigem que voc\u00ea acesse o site GNSS calendar, baixe e importe as efem\u00e9rides para o mesmo.<\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Para importar as mesmas para um projeto do topcon tools, uma vez que voc\u00ea esteja com os dados baixados \u00e9 s\u00f3 arrastar e soltar os arquivos das efem\u00e9rides dentro do projeto.<\/span><\/p>\n<p><span style=\"font-size: 20px; font-family: arial, helvetica, sans-serif; color: #000000; line-height: 1.3;\">Ao fazer isso na parte inferior do topcon tools, na guia \u201c<em>obs GPS<\/em>\u201d, o status do campo \u201c\u00d3<em>rbita<\/em>\u201d ir\u00e1 mudar de &#8220;radio difus\u00e3o para preciso.<\/span><\/p>\n<p><span style=\"font-family: arial, helvetica, sans-serif; font-size: 20px; color: #000000;\">V\u00eddeo a respeito do assunto.<\/span><\/p>\n<p><center><iframe width=\"853\" height=\"480\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/Z4RRJkqqgo4\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/center><\/p>\n<p><span style=\"font-family: arial, helvetica, sans-serif; font-size: 20px; color: #000000;\">\u00c9 isso por este artigo. <\/span><span style=\"color: #000000; font-family: arial, helvetica, sans-serif; font-size: 20px;\">Gratid\u00e3o por voc\u00ea ter lido o mesmo. \ud83d\ude4f<\/span><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2 style=\"text-align: center;\"><span style=\"font-family: arial, helvetica, sans-serif; color: #000000; font-size: 24px;\"><strong>Domine a Topografia Cadastral atrav\u00e9s de um livro formado por centenas de exemplos pr\u00e1ticos <\/strong><\/span><\/h2>\n<h2 style=\"text-align: center;\"><span style=\"font-size: 20px;\"><a href=\"https:\/\/adenilsongiovanini.com.br\/georreferenciamento-de-imoveis-rurais-na-pratica\/\" rel=\"nofollow noreferrer\"><img decoding=\"async\" class=\"aligncenter size-large wp-image-19317\" src=\"https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2021\/04\/livro-de-topografia-e-georreferenciamento-1024x474.png\" sizes=\"(max-width: 1024px) 100vw, 1024px\" srcset=\"https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2021\/04\/livro-de-topografia-e-georreferenciamento-1024x474.png 1024w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2021\/04\/livro-de-topografia-e-georreferenciamento-300x139.png 300w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2021\/04\/livro-de-topografia-e-georreferenciamento-768x355.png 768w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2021\/04\/livro-de-topografia-e-georreferenciamento-1536x711.png 1536w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2021\/04\/livro-de-topografia-e-georreferenciamento-320x148.png 320w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2021\/04\/livro-de-topografia-e-georreferenciamento-640x296.png 640w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2021\/04\/livro-de-topografia-e-georreferenciamento-360x167.png 360w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2021\/04\/livro-de-topografia-e-georreferenciamento-720x333.png 720w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2021\/04\/livro-de-topografia-e-georreferenciamento-1080x500.png 1080w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2021\/04\/livro-de-topografia-e-georreferenciamento-800x370.png 800w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2021\/04\/livro-de-topografia-e-georreferenciamento-1280x592.png 1280w, https:\/\/adenilsongiovanini.com.br\/blog\/wp-content\/uploads\/2021\/04\/livro-de-topografia-e-georreferenciamento.png 1565w\" alt=\"livro de topografia e georreferenciamento\" width=\"1024\" height=\"474\" \/><\/a><\/span><\/h2>\n<p><span style=\"font-family: arial, helvetica, sans-serif; font-size: 20px; color: #000000;\">Voc\u00ea quer dominar a Topografia Cadastral?<\/span><\/p>\n<p><span style=\"font-family: arial, helvetica, sans-serif; font-size: 20px; color: #000000;\">Ent\u00e3o eu tenho uma \u00f3tima noticia para voc\u00ea. Me refiro ao <span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/adenilsongiovanini.com.br\/georreferenciamento-de-imoveis-rurais-na-pratica\/\" rel=\"nofollow noreferrer\">livro Topografia Cadastral e Georreferenciamento de Im\u00f3veis Rurais na Pr\u00e1tica<\/a><\/span>.<\/span><\/p>\n<p><span style=\"font-size: 20px;\"><span style=\"font-family: arial, helvetica, sans-serif; color: #000000;\">O mesmo \u00e9 dividido em 10 cap\u00edtulos recheados com muitos estudos de caso e exemplos pr\u00e1ticos. D\u00ea uma espiadinha no sum\u00e1rio do mesmo:<\/span><\/span><\/p>\n<p>&nbsp;<\/p>\n<p><center><iframe width=\"99%\" height=\"980\" src=\"https:\/\/drive.google.com\/file\/d\/1HJ8fZz1PvPmftfXHJNFTvIBBzY_FZhPJ\/preview\"><span data-mce-type=\"bookmark\" style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" class=\"mce_SELRES_start\">\ufeff<\/span><\/iframe><\/center><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-size: 20px;\"><span style=\"font-family: arial, helvetica, sans-serif; color: #000000;\">Para conhecer melhor a estrutura do livro, juntar-se a mais de 800 profissionais e adquirir sua c\u00f3pia \u00e9 s\u00f3 clicar no bot\u00e3o abaixo:<\/span><\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"color: #000000; font-size: 20px;\"><div class=\"su-button-center\"><a href=\"https:\/\/adenilsongiovanini.com.br\/georreferenciamento-de-imoveis-rurais-na-pratica\/\" class=\"su-button su-button-style-3d\" style=\"color:#000000;background-color:#2BCC2F;border-color:#23a426;border-radius:9px\" target=\"_blank\" rel=\"nofollow\" id=\"1\"><span style=\"color:#000000;padding:0px 24px;font-size:18px;line-height:36px;border-color:#6bdc6e;border-radius:9px;text-shadow:0px 0px 0px #000000\"> \u279c Quero Conhecer Melhor o Livro, Pois Quero e Preciso Aprender Mais Sobre Legisla\u00e7\u00e3o Cadastral e Geo. de Im\u00f3veis Rurais<\/span><\/a><\/div><\/span><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>O que s\u00e3o efem\u00e9rides? Para que servem? Quais os diferentes tipos de efem\u00e9rides existentes? Quando utilizar cada um dos diferentes tipos e quanto tempo \u00e9 necess\u00e1rio esperar para isso? Estas s\u00e3o algumas d\u00favidas comuns dos profissionais que est\u00e3o come\u00e7ando a trabalhar com o posicionamento pelo GNSS. Por causa disso, eu [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3708,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[8],"tags":[],"class_list":["post-3696","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-posicionamento-pelo-gnss"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Efem\u00e9rides: como baixar e utilizar no seu dia a dia - Adenilson Giovanini<\/title>\n<meta name=\"description\" content=\"Aprenda o que s\u00e3o, como baixar e utilizar efem\u00e9rides no seu dia a dia atrav\u00e9s deste guia definitivo sobre a utiliza\u00e7\u00e3o dos dados ef\u00eameros.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/adenilsongiovanini.com.br\/blog\/efemerides\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Efem\u00e9rides: como baixar e utilizar no seu dia a dia - 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