To determine the relative positions of them, the GPS technique, traditional direction and range survey, and preciseleveling are adopted in this paper.
本文采用GPS技术及常规的方向、距离和精密水准测量对三个站进行了空间归心测量。
2
Theoretic study and experiment show that the new method solves the problem which simplex GPS leveling can't connect different height systems and so it is an effectively precise method.