摘要
Abstract
in modern surveying and mapping system, vertical system maintenance has to transition from the past traditional leveling to rely on geoid elaboration. Like geoid refine is on the basis of spatial orientation coordinate reference frame, establishing integrating plane, elevation, gravity field information, the basis of control network, using the data of GPS/leveling and gravity, fusion processing can obtain cm magnitude of geoid, achieve the realization of the aim of to replace the leveling with GPS.关键词
GNSS网/似大地水准面精化/高程异常/拟合Key words
GNSS network/Quasi-Geoid determining/height anomaly/fitting分类
天文与地球科学
