摘要
本文利用全球重力位模型、胶州市地面重力观测数据、胶州市GPS水准数据和数字地面模型(DTM),采用组合法应用移去-恢复技术计算剩余大地水准面,并与地球位模型计算的高程异常进行拟合,得到该地区重力似大地水准面,再和布测、计算得到的GPS/水准所构成的几何大地水准面拟合,利用多项式拟合完成系统改正,获得最终的大地水准面结果及相关的精度信息。
The article studied to choose combination method （Molodensky theory） using the remove-restore technique to compute remainder geoid. It supplied available data which come from the Whole World Gravity Field Model, the gravity data, the GPS/leveling data in Jiaozhou and the Digital Terrain Model. The local gravity geoid was determined by fitting the remainder geoid with height anom- aly which was computed by the Whole World Gravity Field Model. Then the local gravity geoid was combined with geometric geoid ob- tained from GPS leveling and systematically corrected by the least square collocation method. Finally the result of this regional geoid and its precision information were gained.
出处
《测绘科学》
CSCD
北大核心
2013年第3期43-46,共4页
Science of Surveying and Mapping
关键词
移去-恢复技术
地形改正
最小二乘配置法
重力归算
莫洛坚斯基原理
高程异常
remove-restore technique
terrain correction
least square collocation method
gravity reduction
Molodensky theory
height anomaly
