本文提出利用江河每边岸上相邻水准点间的高程异常差进行GPS 高程拟合, 避免了两岸

未统一高程系统对拟合参数的影响, 经虎门大桥实验验证, 在海面宽3 km 多的两岸上获得的高程系统差的精度满足特大型公路桥梁的高程控制要求, 这对沿海平坦地区的铁路桥梁跨河水准测量都有参考作用。-This thesis presents the level of rivers and adjacent points on each side of the shore height anomaly difference between the GPS height fitting, to avoid the sides have not unified height system for fitting parameters, the Humen Bridge experiment, in the sea more than 3 km wide strait The elevation gain on the accuracy of the system to meet the large difference between the elevation control requirements of highway bridge, which is a flat area along the coast crossing the railway bridge has a reference standard of measurement.