National Geodetic Survey(NGS) Database is an important part of National Spatial Data Infrastructure ( NSDI ) - National Spatial Data Infrastructure database. 国家大地测量(NGS)数据库是国家空间数据基础设施(NSDI)&国家空间数据基础数据库的重要组成部分。
The mean internal accuracies of SHAO series are better than those obtained by National Geodetic Survey(NGS) of USA ( NGS ) in the same duration. 求得的系列内部精度平均值好于由美国国家大地测量(NGS)局(NGS)归算系列的同期结果。
CORS is run by National Geodetic Survey(NGS) ( NGS ), an office of National Oceanic and Atmospheric Administration ( NOAA ). CORS由美国大地测量局(NGS)主持运行。
On National Geodetic Infrastructure Survey on the Laser Triangulation 论我国大地测量基础建设激光三角法综述