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Geodetic coordinates are a type of curvilinear orthogonal coordinate system used in geodesy based on a reference ellipsoid. They include geodetic latitude (north/south) ϕ, longitude (east/west) λ, and ellipsoidal height h (also known as geodetic height[1]).
A geographic coordinate system (GCS) is a spherical or geodetic coordinate system for measuring and communicating positions directly on Earth as latitude and longitude. [1] It is the simplest, oldest and most widely used of the various spatial reference systems that are in use, and forms the basis for most others.
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).
The geographical latitude and longitude of a point on the earth’s surface, determined by means of geodetic measurement of the distance (mainly by the method of triangulation) and the bearing (azimuth) from several other points whose geographic coordinates are known.
Geodetic Coordinate Conversions James R. Clynch Naval Postgraduate School, 2002 I. Geodetic to/from Geocentric Latitude A. Geodetic Latitude (φ, or φg) to Geocentric Latitude (φ′, or φc) There are many equations that can be used. One of the most common involves the tangent of the latitude. At a geodetic or ellipsoidal height h, φ
The Global Positioning System uses the World Geodetic System (WGS84) as its reference coordinate system. It consists of a reference ellipsoid, a standard coordinate system, altitude data, and a geoid.
A geodetic datum or reference frame is an abstract coordinate system with a reference surface (such as sea level) that serves to provide known locations to begin surveys and create maps. NGS defines the official geodetic datums for all federal mapping activities in the U.S. and its territories (see Table 1) as part of the National Spatial ...
Geodetic Coordinate System. For any selected point above the surface of a geoid, a line which is perpendicular to the geoid and passing through the selected point is formed. This line, named the geodetic local vertical , is used to define the following set of geodetic parameters:
Geodetic coordinates, latitude and longitude, specify a location on the Earth’s oblate (non-spherical) surface. Latitude, unless otherwise specified, is generally the geodetic latitude. Geodetic latitude is defined as the angle between the equatorial plane and a line normal to the surface at that location.
What is a Geographic Coordinate System? A Geographic Coordinate System is a reference framework used to define the location of features on the surface of the Earth. It is a system of latitude and longitude coordinates that defines a three-dimensional position of a point on the Earth’s surface.