World Geodetic System: Sistema ti reperensia ti geodetiko
Ti World Geodetic System (WGS) ket ti pagalagadan para iti panagusar iti kartograpia, heodesia, ken nabigasion nga iraman babaen ti GPS.
Daytoy ket buklen ti pagalagadan ti sistema ti nagsasabtan para iti Daga, ti pagalagadan a maipapan iti esperoide a reperensia ti rabaw (ti datum wenno elipsoide ti reperensia) para iti batayna a datos ti altitud, ken iti maipapan iti grabidad nga ekuipotensial a rabaw (ti geoid) a mangipalawag ti nominal a pantar ti baybay.
Ti kaudian a rebision ket ti WGS 84 (ammo pay a kas ti WGS 1984, EPSG:4326), a naipatakder idi 1984 ken naudi a nabaliwan idi 2004. Dagiti nasapsapa nga isbangan ket nangiraman iti WGS 72, WGS 66, ken WGS 60. Ti WGS 84 ket ti sistema ti reperensia ti nagsasabtan nga inus-usar babaen ti Global Positioning System.
Dagiti nagibasaran
Dagiti akinruar a silpo
- Geodesy for the Layman, Chapter VIII, "The World Geodetic System"
- NIMA Technical Report TR8350.2 Naiyarkibo 2017-07-04 iti Wayback Machine Department of Defense World Geodetic System 1984, Its Definition and Relationships With Local Geodetic Systems, Third Edition, National Geospatial-Intelligence Agency. This is the official publication of the standard, including addenda. Note this report actually documents the EGM 96 model (a revision of WGS 84). The original WGS 84 is documented in versions prior to 1996.
- Main NGA (was NIMA) page on Earth gravity models
- Description of the difference between the geoid and the ellipsoid from the US NOAA National Geodetic Survey GEOID page
- NASA GSFC Earth gravity page Naiyarkibo 2015-05-02 iti Wayback Machine
- GeographicLib provides a utility GeoidEval (with source code) to evaluate the geoid height for the EGM84, EGM96, and EGM2008 earth gravity models. Here is an online version of GeoidEval.
- Spatial reference EPSG Projection 4326 – WGS 84
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