利用三角剖分内插法精化似大地水准面模型  

Using the Method of Triangulation Bilinear Interpolation to Refine Quasi-Geoid Model

作　　者：朱毅[1] 丁云鹏 李正会[3] 赵振峰 

机构地区：[1]西南林业大学土木工程学院,云南昆明650224 [2]昆明市测绘研究院,云南昆明650000 [3]云南省航测遥感信息院,云南昆明650034 [4]云南省地矿测绘院,云南昆明650218

出　　处：《测绘科学技术学报》2014年第6期584-586,592,共4页Journal of Geomatics Science and Technology

摘　　要：在云南山区利用GPS/水准拟合法精化大区域似大地水准面,难以获得高精度的正常高结果;文中结合云南昌宁县控制测量项目,利用云南省已有似大地水准面插值模型,并结合高精度GPS/水准,探讨采用三角剖分双线性内插法获取满足四等高程精度的拟合模型,并验证了精化模型的稳定性与精度指标。In the mountain area of Yunnan province, it is difficult to obtain the normal results with high accuracy by using GPS / leveling fitting to refine the quasi-geoid model. Combined the control survey project of Changning County in Yunnan and the high-precision GPS / leveling, the fitting model that could get the fourth-height accuracy was discussed by using the triangulation bilinear interpolation method with Yunnan quasi-geoid interpolation software, and the stability and accuracy indexes of the refined model were verified.

关 键 词：似大地水准面 高程异常差值 GPS/水准 三角剖分 双线性内插法 三角高程 高程精度 

分 类 号：P228[天文地球—大地测量学与测量工程]