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CGCS2000
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2000国家大地坐标系，是中国当前最新的国家大地坐标系，英文名称为China Geodetic Coordinate System 2000，英文缩写为CGCS2000。2000国家大地坐标系的原点为包括海洋和大气的整个地球的质量中心；2000国家大地坐标系的Z轴由原点指向历元2000.0的地球参考极的方向，该历元的指向由国际时间局给定的历元为1984. ...
EPSG:4490 is a 2D coordinate system based on the CGCS2000 ellipsoid and the China 2000 datum. It is used for horizontal coordinates in China - onshore and offshore, and replaces Xian 1980 (CRS code 4610).
以上就是CGCS2000坐标系的详细说明，主要包括了坐标参数、坐标意义、坐标背景、坐标获取方法等功能。 GIS（影像地形）+倾斜模型+CAD+BIM工程设计施工应用资料合集
The CGCS2000 coordinate system has been widely used in many industries, greatly promoting the process of digitalization and refined management in China. In surveying and mapping, CGCS2000 provides a unified geographic reference framework for topographic map production and the collection and management of basic geographic information.
2000国家大地坐标系 （英語： China Geodetic Coordinate System 2000，缩写 CGCS2000），是中華人民共和國推出的一個国家 大地坐标系，是製作国家基本比例尺地图的基础 [1]。
However, it must be noted that China's BDS adopts BeiDou Coordinate System (BDCS), which is aligned with China Geodetic Coordinate System 2000 (CGCS2000) (Yang, 2009).
CTRF 2000 is a geocentric terrestrial reference system for satellite navigation in China, based on ITRF 1997. It consists of three frames: CORS, GPS network and astro-geodetic network, with different accuracies and applications.
CGCS2000 is a geodetic datum adopted by China since 2008. It is compared with WGS84, another geocentric coordinate system, in terms of geodetic coordinates, normal gravity and vertical gradient.
EPSG:4479 is a geocentric coordinate system based on the China 2000 datum and the CGCS2000 ellipsoid. It is used for geodesy in China and has a prime meridian of Greenwich.
与 北斗坐标系 区别 北斗坐标系和WGS84坐标系类似，属于导航坐标系，其坐标是观测历元的动态坐标，与CGCS2000坐标系有2500多个框架点不同，北斗坐标系只有几个框架点，其更新周期短，测量精度低，而CGCS2000属于国家基础坐标系，更新周期往往长达几十年。