摘要
GPS跨海水准的关键问题是海峡两侧的高程基准不一致 ,因此无法采用常规的数值拟合方法。新方法从垂线偏差入手 ,首先采用 GPS水准分别测定海峡两侧的地面垂线偏差 ,再由所求垂线偏差计算跨海峡的高程异常差。 10
The key of GPS leveling across sea is that the height datum on each side of channel is not consistent,so the general geometrical fitting method can not be used directly.In this paper,a new method based on vertical deflection is used to solve the question,in which GPS leveling is used to determine surface deflections on each side of obstacle separately, afterwards surface deflections used to compute height anomaly difference between both sides of a river.The precision of a trial across an obstacle in width of 10 km is close to Ⅱgrade leveling.
出处
《公路》
北大核心
2004年第3期12-14,共3页
Highway
