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From 1901 to 1911, the USCGS established several triangulation networks across the country which had different origins. In 1911, these different networks on different datums and with different origins were consolidated into one nationwide network and the Luzon Datum was established with triangulation station Balanacan as its datum origin.
In geodesy, conversion among different geographic coordinate systems is made necessary by the different geographic coordinate systems in use across the world and over time.
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.
The World Geodetic System (WGS) is a standard used in cartography, geodesy, and satellite navigation including GPS.The current version, WGS 84, defines an Earth-centered, Earth-fixed coordinate system and a geodetic datum, and also describes the associated Earth Gravitational Model (EGM) and World Magnetic Model (WMM).
A geodetic datum or geodetic system (also: geodetic reference datum, geodetic reference system, or geodetic reference frame, or terrestrial reference frame) is a global datum reference or reference frame for unambiguously representing the position of locations on Earth by means of either geodetic coordinates (and related vertical coordinates) or geocentric coordinates. [1]
A WKT format is defined to describe the operation methods and parameters used to convert or transform coordinates between two different coordinate reference systems. The WKT 1 and WKT 2 formats are incompatible regarding coordinate operations, because of differences in the modelling. [13]
Converters CH1903 <-> WGS 84 NAVREF, Swisstopo; Umrechnung von Schweizer Landeskoordinaten in das WGS84-System, University of Potsdam; Online maps with search by Swiss coordinates: Retorte.ch Koordinator - Google Maps mashup that works with Swiss coordinates
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