Category
page 1Geographic coordinate systems
geographic coordinate system
system to specify locations on Earth
Universal Transverse Mercator
cartographic coordinate system
Geography
treatise on cartography by Claudius Ptolemaeus
decimal degrees
notation for angular measurements, typically for latitude and longitude
Ordnance Survey National Grid
system of geographic grid references used in Great Britain
Maidenhead Locator System
the world in "numbered" squares
Military Grid Reference System
global coordinate reference system

ED50
ED50 ("European Datum 1950", EPSG:4230) is a geodetic datum which was defined after World War II for the international connection of geodetic networks.
projected coordinate system
locations on maps using Cartesian coordinates

Open Location Code
encoding of geographic coordinates into a short string of characters and digits, named plus code
Universal Polar Stereographic coordinate system
coordinate system
Irish grid reference system
system of geographic grid references used for paper mapping in Ireland
spatial reference system
frame of reference used to represent positions on or near Earth
Geodetic coordinates
geographic coordinate system
ISO 6709
international standard for representation of geographic location
Palestine grid
Geographic coordinate system
SK-42 reference system
geodetic reference ellipsoid
Swiss coordinate system
geographic coordinate system used in Switzerland for maps and surveying by the Swiss Federal Office of Topography
north east down
geographical coordinate system for representing state vectors that is commonly used in aviation
geographic coordinate conversion
overview of GPS conversion formulas
Web Mercator
Mercator projection variant
Gaussian grid