应用GPS数据与重力数据确定大地水准面

Determination of Geoid by GPS and Gravity Data

作为GPS/重力边值问题理论及方法的应用,在对GPS/重力方法确定（似）大地水准面的原理进行简要介绍与分析的基础上,利用收集到的N区的600个GPS/重力数据和48个高精度GPS水准数据,计算出该区域的（似）大地水准面。通过拟合法和系统差直接改正法进行的精度分析表明,应用GPS/重力数据结合水准方法确定的该地区（似）大地水准面的精度达到厘米级精度。

As an application and test of GPS/gravity boundary value problem,a local geoid located in N area is determined by 600 GPS/gravity data and 48 GPS/leveling data.The accuracy analysis by GPS/leveling data matching and direct correction of system difference show that a centimeter accuracy of local geoid can be achieved by combining the method of GPS/gravity data and the method of GPS/gravity boundary value problem.