Abstract：At present, the users need a flexible syetem (without basestation) to provide realtime positioning service of meter level precision in many application fields. The advantages and significance of integration of the mobile technology, GPS precise point positioning and GIS are analyzed and the GIS data acquisition system based on PDA and GPS precise point positioning are realized. The process of realizing the whole system as well as the key technologies is presented. Finally,the experimental results demonstrate that the system is feasible and able to meet the practical needs of GIS data acquisition with meter level precision in horizontal direction.
Li Xingxing , Luo Tao ,Zhang Xiaohong et al. GIS ACQUISITION SYSYEM BASED ON PDA FOR REALIZATION OF GPS PRECISE POINT POSITIONING[J]. jgg, 2009, 29(1): 140-143.
