GPS9800在济南市长清地形控制网中的应用

Application of GPS9800 in Landform Controlling Net in Changqing City of Jinan City

在济南市长清区经济开发区地形测量控制网设计中应用了SOUTHGPS9800及其数据处理软件。工作中采用GPS观测技术精确测定点位的三维坐标,求定其大地高程,通过四等水准求得该点的正常高程,从而确定该点的高程异常值,布设足够多的GPS水准点,通过求得的高程异常值确定控制点的正常高程,精度符合要求。

SOUTH GPS9800 is applied in landform mapping controlling net to conduct datas in Changqing economic developing area of Jinan city. By applying GPS technology, three dimensional coordinates and geodetic altitude are measured accurately. Through fourth class altitude, normal altitude of this spot is measured, then abnormal value of this spot is determined. Thus, if GPS spots can be laid as many as possible, through the already gained abnormal value of altitude, normal value of controlling spots can be determined more accurately.