珠海市陆海统一似大地水准面的确定Determination of quasi-geoid of the unified terrestrial and marine in Zhuhai
胡冬芽,安向东,黎彬,马德富
摘要(Abstract)：
针对通常的似大地水准面模型较少涉及海域的情况,该文基于重力数据和地形数据,采用顾及各类地形位及地形引力影响的第二类Helmert凝集法计算了珠海重力似大地水准面;利用高分辨率和高精度的地形数据来恢复大地水准面短波部分,提高了似大地水准面的精度;利用25个高精度全球卫星导航系统水准资料与重力似大地水准面进行了独立比较,其精度为0.012m;然后,采用球冠谐方法,将重力似大地水准面与25个全球卫星导航系统水准数据联合,建立了珠海市海陆统一的似大地水准面模型,其精度为0.008m;最后,利用15个全球卫星导航系统/水准点对似大地水准面模型进行了外部检核,精度为0.010m。
关键词(KeyWords)： 似大地水准面;GNSS控制网;测绘基准;陆海统一;重力场模型
基金项目(Foundation):
作者(Author): 胡冬芽,安向东,黎彬,马德富
DOI: 10.16251/j.cnki.1009-2307.2016.06.016
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