摘要
以清远市cm级似大地水准面模型的确立为例,综合运用各种数据和拟合算法,通过计算和统计,探讨了采用"移去-恢复"法计算城市级似大地水准面模型的关键技术,并提出了优化建议。
Taking the determination of centimetre-level quasi-geoid model in Qingyuan City for example,based on EGM2008 gravity field model,highprecision DEM data and gravity data,we used"Removing-Restore"method to determine the centimetre-level quasi-geoid model of Qingyuan City.Then,we studied the key technical problems of the determination of city-level quasi-geoid model with complex topography,and put forward the optimization method.
出处
《地理空间信息》
2021年第7期93-95,I0007,共4页
Geospatial Information
