摘要
作为GNSS静态测量转换至水准成果的重要参数,高程异常参数的区域求解尤为关键。本文从分区拟合方面入手,通过平面拟合处理判断区域拟合中低精度控制点,以此为依据进行分区拟合。通过多项式拟合法、最小二乘配置法、多面函数拟合法进行拟合计算,实验证明,以平面拟合中误差为依据的多面函数分区方案能够在两个区域中分别取得较好的拟合效果,最小残差中误差分别为0.009和0.01m,可以作为分区拟合的依据。
As an key parameter of GNSS static survey conversion to leveling results,the regional solution of elevation anomaly parameters is particularly critical.In this paper,starting from the area fitting,through the plane fitting processing to judge the low precision control points in the area fitting,based on which the area fitting was carried out.Through the polynomial fitting method,least square collocation method and polyhedral function fitting method,the experiment showed that the partition scheme of polyhedral function based on the error in plane fitting could achieve better fitting effect in the two regions,and the minimum residual mean square error was 0.009 m and 0.01 m respectively,which could be used as the basis of partition fitting.
作者
廖俊州
赵仁君
LIAO Junzhou;ZHAO Renjun(Haikou land surveying and Mapping Institute,Haikou Hainan 570100,China)
出处
《北京测绘》
2021年第2期152-156,共5页
Beijing Surveying and Mapping
关键词
高程异常
分区拟合
似大地水准面
中误差
多面函数
elevation anomaly
partition fitting
quasi geoid
mean square error
polyhedral function
