摘要
似大地水准面精化的应用,是GNSS技术在测绘领域尤其是在水准测量方面常见的技术手段,能够更好地提高生产效率和实现经济价值,有着传统水准测量无法比拟的优势。GNSS水准拟合高程技术日臻完善,它的关键是如何将没有物理意义的大地高转换成有使用价值的正常高。通常的做法就是研究高程异常,根据情况不同建立合适的数学模型,结合已有数据进行拟合。结合小保当煤矿工业广场和风井广场5 km^2范围内的实测数据,基于MATLAB的数据处理功能,采用多项式拟合方法进行区域似大地水准面精化的实践应用。
The application of quasi-geoid refinement is a common technical means of GNSS technology in the field of surveying and mapping,especially in leveling.It can improve production efficiency and realize economic value better,and has incomparable advantages compared with traditional leveling.The key of GNSS leveling fitting elevation technology is how to convert the geodetic height without physical significance into the normal height with useful value.Combining the measured data of industrial square and air shaft square in Xiaobaodong coal mine,based on the data processing function of MATLAB,the polynomial fitting method was used to refine the regional quasi-geoid.
作者
封华梅
FENG Hua-mei(Shaanxi No.185 Coalfield Geology Co.,Ltd.,Yulin 719000,China)
出处
《陕西煤炭》
2019年第2期108-110,100,共4页
Shaanxi Coal
