大地高 meaning in Chinese
elli oidalheight
geodetic height，ellipsoidal height
geodeticheight
Examples
- The height from gps surveying is geodetic height while normal height is needed in reality
Gps测得的是大地高，而实际上需要的是正常高。 - Now the 2d precision of spatial points is very great , but because by usual correlation fitting method we can transfer gps ellipsoidal height into normal height of the local geoid is considered as mathematical curve plane , it is not conform the fact of mountainous districts so the precision of elevation is so small that it is not satisfied with the requirement of leveling
目前，地面点的平面位置确定精度已相当高，但高程精度始终未能达到水准测量的要求，因为将gps大地高转化为水准正常高的拟合推估方法是将局部大地水准面视为数学曲面，常常与实际情况差异较大(特别在西部山区差异更大) 。 - A description is made of the problems encountered in gps leveling measurement in this field and countermeasures . as observation of ground subsidence is made through measuring the relative movement of the observation stations , it is proposed to base the subsidence observation on change of geodetic elevation . check is made of the accuracy and reliability of this observation method by citing typical examples
介绍了gps水准测量中的若干问题及其解决方法，结合开采沉陷监测需要的是相对变化量的特点，为避免坐标转换造成的精度损失，提出了开采沉陷观测中的下沉值可应用大地高的变化量代替的方法，并对其精度及可靠性进行了实例验证。