.Content1Introduction 介绍22 Horizontal Control Point Establishment (HCPs)6建立水平控制网2.1 GPS Survey (GPS Observation)6GPS观测,GPS测量2.1.1 Establishment of primary control point6建立首级控制点 /网2.1.2 GPS Technique6GPS技术2.1.3 Reference and Datum 7参考和技术参数2.2 Traverse Survey9导线测量2.2.1 Establishment of secondary control poin.t9建立加密 (次级)控制点/网2.2.2 Traverse adjustmen.t9平差(加密控制网平差 )2.2.3 Accuracy required and achieved 10所需的精度和所达到的精度 (是否符合要求 )3 Vertical Contr
