基于重力场模型统一亚太高程基准的方法研究  

Study of method for unification of local height datum in Asia-Pacific region based on gravity field model

作　　者：张英杰[1,2] 文汉江[2] 王友雷 刘焕玲[2,4] 

机构地区：[1]辽宁工程技术大学测绘与地理科学学院,辽宁阜新123000 [2]中国测绘科学研究院,北京100830 [3]河北省第一测绘院,石家庄050000 [4]武汉大学测绘学院,武汉430079

出　　处：《测绘科学》2016年第12期184-188,278,共6页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(41204007);公益性测绘行业专项(201512012)

摘　　要：针对不同国家和地区高程基准不一致的问题,该文采用GOCE重力场模型和GPS/水准数据对高程基准统一的方法进行了研究,分析了基于GOCE的不同重力场模型用于计算亚太区域(110°E^180°E,50°S^50°N)高程基准偏差的差异,基于重力场模型GECO,利用亚太区域36个验潮站附近的GPS/水准点数据计算的平均海平面与大地水准面垂直偏差的平均值为0.416m,利用日本沿岸5个GPS/水准点数据计算的高程基准与大地水准面垂直偏差的平均值为0.185m,利用澳大利亚沿岸4个GPS/水准点数据计算的高程基准与大地水准面垂直偏差的平均值为0.41m。Aiming at the problem that the height datum unification is different in different countries and regions,the method for height datum unification was studied by using Earth＇s gravity field model from GOCE and GPS/levelling data.Different gravity field models based on GOCE were used to compute the deformation of height datums in Asia-Pacific region（110°E^180°E,50°S^50°N）.Finally,based on GECO gravity field model,the mean vertical deviation between mean sea level obtained by each of 36GPS/levelling points in Asia-Pacific region and geoid was 0.416 m,the mean vertical deviation between height datum computed by each of 5GPS-levelling points along the Japanese coast and geoid was 0.185 m,and the mean vertical between height datum computed by each of 4GPS-levelling points along the Australian coast and geoid was 0.41 m.

关 键 词：GOCE GPS/水准 高程基准 垂直偏差 

分 类 号：P22[天文地球—大地测量学与测量工程]