Tsamaiso ea geodetic ke eng?
Geodetic datum kapa geodetic system (hape: geodetic reference datum, geodetic reference system, kapa geodetic reference frame) ke global datum reference kapa reference frame bakeng sa ho emela hantle boemo ba libaka Lefatšeng kapa lipolaneteng tse ling ka li-coordinate tsa geodetic. Lintlha ke tsa bohlokoa bakeng sa theknoloji leha e le efe kapa mokhoa o thehiloeng sebakeng sa sebaka, ho kopanyelletsa le geodesy, navigation, surveying, geographic information systems, remote sensing, le cartography. Boemo bo otlolohileng bo sebelisetsoa ho lekanya sebaka se holim'a lefatše, ho latitude le longitude kapa tsamaisong e 'ngoe ea likhokahanyo; boemo bo emeng bo sebelisetsoa ho lekanya bophahamo kapa botebo bo amanang le tšimoloho e tloaelehileng, joalo ka mean sea level (MSL). Ho tloha ha ho hlaha Global Positioning System (GPS), ellipsoid le datum WGS 84 eo e e sebelisang e nkile sebaka sa tse ling tse ngata lits'ebetsong tse ngata. WGS 84 e reretsoe hore e sebelisoe lefatšeng ka bophara, ho fapana le lipalo-palo tse ngata tsa pele.