Earth:Modified transverse Mercator
From HandWiki
The modified transverse Mercator (MTM) coordinate system is a metric grid-based method of specifying locations, similar to the Universal Transverse Mercator coordinate system (UTM). MTM uses a transverse Mercator projection with zones spaced 3° of longitude apart.
The coordinate system is used by various government institutions in Canada in particular.[1][2][3]
Due to its narrower zones, MTM exhibits a scale factor of 0.9999 (distortion of 1:10,000) in the midpoint of a zone, versus 0.9996 (1:2,500) for UTM. This makes it more suitable for land surveying, with its target maximum distance (closure) error of 1:5000.[4]
References
- ↑ "Projections". Canadian Geodetic Reference System Committee. https://cgrsc.ca/resources/coordinate-transformations/projections/.
- ↑ "Carte du Québec: Systèmes de projection". Ministère des terres et forêts du Québec. https://www.usherbrooke.ca/biblio/fileadmin/sites/biblio/documents/pdf/carto/Carte_fuseaux_MTM_et_UTM.pdf.
- ↑ "Converting between UTM, MTM, and lat/long". CanadianGIS. https://canadiangis.com/converting-between-utm-mtm-and-latlong.php.
- ↑ "Technical support: Projections in Nova Scotia". GeoNOVA. https://geonova.novascotia.ca/sites/default/files/resource-library/NSCRS%20Technical%20Support%200004%20Projections%2029Feb2016.pdf.
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