Tam sim no, WGS 84 siv lub ntiaj teb Gravitational Model 2008. Qhov geoid no txhais tau hais tias qhov nominal hiav txwv theem nto los ntawm txoj kev ntawm ib tug kheej kheej harmonics series ntawm degree 2160.
Is WGS 84 a Cartesian?
Ntev hauv GPS (WGS84) thiab Cartesian ua haujlwm yog tib yam. Latitude yuav tsum tau hloov dua siab tshiab los ntawm WGS 84 ellipsoid tsis semi-loj axis yog 6378137 m, thiab. Reciprocal ntawm flattening yog 298.257223563.
Yog WGS puas yog thaj chaw tswj hwm?
WGS84 kuj tuaj yeem yog ib hom thaj chaw tswj hwm qhov system Lub WGS84 Coordinate Systems ntxiv Greenwich raws li qhov pib (prime meridian) rau longitude (0°) thiab teev cov units hauv degrees (°). Qhov kev sib koom tes no tseem muaj cov cai siv tshwj xeeb, lub npe hu ua EPSG code uas yog 4326.
Dab tsi ellipsoid siv WGS 84?
North American 1983 datum (NAD83) siv Geodetic Reference System (GRS80) ellipsoid thaum lub Ntiaj Teb Geodetic System ntawm 1984 (WGS84) siv WGS 84 ellipsoid.
Yog WGS 84 geocentric lossis geodetic?
Tab sis koj puas tau xav tias nws cuam tshuam li cas? Zoo, WGS84 yog a ntiaj teb geodetic system! Yog li cov ntaub ntawv tsis tau npaj! Nws yog geodetic system nrog geocentric lossis geodetic kev tswj xyuas raws li EGM96 geoid, siv ellipsoid IAG GRS80, thiab thawj meridian yog Greenwich meridian.
