应用GPS/重力数据确定(似)大地水准面

Determination of geoid by GPS/Gravity data

作为GPS 重力边值问题理论及方法的应用,本文在对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70 2个GPS重力数据以及5 2个高精度的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 水准方法确定的该地区似大地水准面的精度达到厘米级.

As an application and test of GPS/Gravity boundary value problem, a local geoid located on N area is determined, by using 702 GPS/Gravity data for calculation and 52 GPS/Leveling for matching and checking. The accuracy analyses by matching with GPS/Leveling data and by direct correction to system difference show that the determination of local geoid computed by GPS/Gravity data and method of GPS/Gravity BVP achieved centimeter accuracy.