| 词条 | Jordan Transverse Mercator |
| 释义 |
Jordan Transverse Mercator (JTM) (Arabic: نظام تربيع ميركاتور الأردني المستعرض) is a grid system created by the Royal Jordan Geographic Center (RJGC). This system is based on 6° belts with a Central Meridian of 37° East and a Scale Factor at Origin (mo) = 0.9998. The JTM is based on the Hayford ellipsoid adopted by the IUGG in 1924. No transformation parameters are presently offered by the government.[1] However, Prof. Stephen H. Savage of Arizona State University provides the following parameters for the projection: Jordan Transverse Mercator Geographic Coordinate System: GCS_International_1924 Datum: D:International_1924 Spheroid: International_1924 Axis: 6378388 Flattening: 297 Prime Meridian: Greenwich Units: Degree Projection: Transverse Mercator False Easting: 500,000 False Northing: -3,000,000 Central Meridian: 37 Scale Factor: 0.9998 Central Parallel: 0 Units: Meter Three-parameter transformation to WGS84 is: ΔX = –86 meters ΔY = –98 meters ΔZ = –119 meters Prof. Savage also offers software, ReprojectME!, which will convert coordinates between JTM and other systems. (See http://daahl.ucsd.edu/gaialab/# for more information.) See also
References1. ^Grids & Datums—Hashemite Kingdom of Jordan Article by Clifford J. Mugnier, C.P., C.M.S. {{cite web|url=http://www.asprs.org/resources/grids/12-2006-jordan.pdf |title=Archived copy |accessdate=2007-02-23 |deadurl=yes |archiveurl=https://web.archive.org/web/20061214085623/http://www.asprs.org/resources/grids/12-2006-jordan.pdf |archivedate=2006-12-14 |df= }} External links
2 : Cartography|Geodesy |
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