摘要
对某县城GPS城区地籍控制网进行了数据处理和精度分析,采用二次多项式曲面拟合函数,获得测区的高程异常模型,把GPS控制点的大地高转换为正常高,最后拟合点和检核点的精度达到了4等水准测量的精度要求,满足了地籍测量工作的需要。
In this paper, data processing and precision analysis of GPS urban cadastration controlling network were carried out. In order to transform the geoid height into the normal height, the authors employed the dual polynomial curved surface function and constructed a height anomaly model for local area surveying. The final precisions of fitting points and checking points can attain the Grade-4 precision requirement and meet the needs of the cadastration work.
出处
《国土资源遥感》
CSCD
2003年第4期42-45,共4页
Remote Sensing for Land & Resources
关键词
GPS
城区地籍控制网
精度分析
高程拟合
GPS
Cadastration controlling network
Precision analysis
Height fitting
