Discussing Optimal Observational Plan of GPS Networks in Difficult Condition
Shubi Zhang · Engineering of Surveying and Mapping · 2002
In this paper,from the problems encountered in combining GPS networks with control points in national plane and elevation control networks,the optimization problem of observation stage in GPS network in difficult conditions such as under tower and near barrier etc is discussed.Then the con-cept of the related precision factor is provided,which has a guidance to practice.