Network RTK Technology Analysis And Applied Research

Recently,the technology of network RTK is the one of focal points for research in the fieldof surveying and mapping.This technology has not yet universal in engineering construction fieldof our country,and there are seldom analysis and comparison in the field of constructiontechnology and application of network RTK.This research mainly focus on it.On the basis of network RTK technology theory,the base station construction andtechnologic construction process of single base station CORS-RTK,mobile base station networkRTK and many base stations CORS-RTK are detailedly researched.Analysed and comparedrelative merits,we get the suggestions of reference value for engineering construction.We study the influences between coordinate transformation parameter and measurementaccuracy by specific experiment.Two kinds of influences include that measurement accuracy isaffected by tiny error of known point and the different control network,respectively.Then,weanalyse and compare the relation between measurement accuracy of three kinds of network RTKand the distance from them to base station. The dynamic measurement of actual time isproceeded for the selected test point in the range of10km,20km,35km and compare the precisionof test data.The research shows that within what kind of range,three kinds of network RTK canensure qualitative measurement accuracy requirements.