{"id":501,"date":"2016-05-21T20:13:18","date_gmt":"2016-05-21T20:13:18","guid":{"rendered":"http:\/\/mitat.tuu.fi\/?p=501"},"modified":"2016-05-21T20:13:18","modified_gmt":"2016-05-21T20:13:18","slug":"most-important-nmea-sentence-is-gpgga","status":"publish","type":"post","link":"http:\/\/mitat.tuu.fi\/?p=501","title":{"rendered":"Most important NMEA sentence is GPGGA"},"content":{"rendered":"<p>GGA &#8211; essential fix data which provide 3D location and accuracy data.<\/p>\n<p> $GPGGA,123519,4807.038,N,01131.000,E,1,08,0.9,545.4,M,46.9,M,,*47<\/p>\n<p>Where:<br \/>\n     GGA          Global Positioning System Fix Data<br \/>\n     123519       Fix taken at 12:35:19 UTC<br \/>\n     4807.038,N   Latitude 48 deg 07.038&#8242; N<br \/>\n     01131.000,E  Longitude 11 deg 31.000&#8242; E<br \/>\n     1            Fix quality: 0 = invalid<br \/>\n                               1 = GPS fix (SPS)<br \/>\n                               2 = DGPS fix<br \/>\n                               3 = PPS fix<br \/>\n\t\t\t       4 = Real Time Kinematic<br \/>\n\t\t\t       5 = Float RTK<br \/>\n                               6 = estimated (dead reckoning) (2.3 feature)<br \/>\n\t\t\t       7 = Manual input mode<br \/>\n\t\t\t       8 = Simulation mode<br \/>\n     08           Number of satellites being tracked<br \/>\n     0.9          Horizontal dilution of position<br \/>\n     545.4,M      Altitude, Meters, above mean sea level<br \/>\n     46.9,M       Height of geoid (mean sea level) above WGS84<br \/>\n                      ellipsoid<br \/>\n     (empty field) time in seconds since last DGPS update<br \/>\n     (empty field) DGPS station ID number<br \/>\n     *47          the checksum data, always begins with *<br \/>\nIf the height of geoid is missing then the altitude should be suspect. Some non-standard implementations report altitude with respect to the ellipsoid rather than geoid altitude. Some units do not report negative altitudes at all. This is the only sentence that reports altitude.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>GGA &#8211; essential fix data which provide 3D location and accuracy data. $GPGGA,123519,4807.038,N,01131.000,E,1,08,0.9,545.4,M,46.9,M,,*47 Where: GGA Global Positioning System Fix Data 123519 Fix taken at 12:35:19 UTC 4807.038,N Latitude 48 deg 07.038&#8242; N 01131.000,E Longitude 11 deg 31.000&#8242; E 1 Fix quality: 0 = invalid 1 = GPS fix (SPS) 2 = DGPS fix 3 = [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-501","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=\/wp\/v2\/posts\/501","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=501"}],"version-history":[{"count":1,"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=\/wp\/v2\/posts\/501\/revisions"}],"predecessor-version":[{"id":502,"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=\/wp\/v2\/posts\/501\/revisions\/502"}],"wp:attachment":[{"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=501"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=501"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=501"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}