{"id":2899,"date":"2017-01-04T00:33:14","date_gmt":"2017-01-04T00:33:14","guid":{"rendered":"\/kb\/?post_type=ht_kb&p=2899"},"modified":"2017-02-17T03:33:16","modified_gmt":"2017-02-17T03:33:16","slug":"precise-distances-ellipsoidal-surface","status":"publish","type":"ht_kb","link":"https:\/\/www.use-snip.com\/kb\/knowledge-base\/precise-distances-ellipsoidal-surface\/","title":{"rendered":"Precise Distances Over the Ellipsoidal Surface"},"content":{"rendered":"

Here is the link you were looking for:<\/p>\n

http:\/\/www.movable-type.co.uk\/scripts\/latlong-vincenty.html<\/a><\/p>\n

This is your go-to<\/em> friend for how to make precise computations with Ellipsoidal Surfaces
\n<\/strong><\/span><\/p>\n

You will find several other useful utilities at that site as well.<\/p>\n

If you are a master of RTK methods you probably already know this stuff.\u00a0 If you are learning about RTK and\/or vehicle safety using DSRC you probably do not. The above site is maintained by Chris Veness – send him a tip for the time his work just saved you.\u00a0\u00a0 This is a how-to for using the Vincenty method.
\n<\/i><\/span><\/p>\n

We have been pointing people to this site for several years now. You will find this link mentioned in published SAE work, in CAMP work,\u00a0 and several other deployments of DSRC where precise offsets between vehicles requires a localized conversion of the\u00a0 LLH and Ellipsoidal surfaces into a local 3D orthogonal space. Often this is a key element to building an effective MAP-SPAT processing framework.\u00a0\u00a0 If you are dealing with with sub-meter accuracy and precision, you will need to master<\/strong> this topic and this web page is the best place the start.<\/p>\n

While this page presents its work in Java code, we have translated this to C\/C++ and Qt implementations over the years.\u00a0 The SCSC DSRC tool kit which was licensed to the US DOT FHWA for open use with SAE J2735 (when DER encoding was used) used this as well, in the provided support utilities.\u00a0 Our MAP-SPAT engine tools use it, and of course SNIP<\/strong><\/span> does as well.\u00a0 If you wish to have a copy of the converted source code, drop the SNIP<\/strong> <\/span>support email a line and we will provide it.<\/p>\n","protected":false},"excerpt":{"rendered":"

Here is the link you were looking for: http:\/\/www.movable-type.co.uk\/scripts\/latlong-vincenty.html This is your go-to friend for how to make precise computations with Ellipsoidal Surfaces You will find several other useful utilities at that site as well. If you are a master of RTK methods you probably already know this stuff.\u00a0 If […]<\/p>\n","protected":false},"author":13,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"ht-kb-category":[285,112],"ht-kb-tag":[290,291],"class_list":["post-2899","ht_kb","type-ht_kb","status-publish","format-standard","hentry","ht_kb_category-base-station-setup","ht_kb_category-general","ht_kb_tag-distance","ht_kb_tag-vincenty"],"yoast_head":"\nPrecise Distances Over the Ellipsoidal Surface - SNIP Support<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.use-snip.com\/kb\/knowledge-base\/precise-distances-ellipsoidal-surface\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Precise Distances Over the Ellipsoidal Surface\" \/>\n<meta property=\"og:description\" content=\"Here is the link you were looking for: http:\/\/www.movable-type.co.uk\/scripts\/latlong-vincenty.html This is your go-to friend for how to make precise computations with Ellipsoidal Surfaces You will find several other useful utilities at that site as well. 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