Conclusions
The integration of FDP, GPS and GIS is the mandatory path of the progress of photogrammetry. WTUSM has developed an entire set of software and work flow from aerial photography to GIS spatial database. This integrated software has been used for a model project of the provincial fundamental GIS system in Guangzhou and is being broadly extended to production within the department of surveying and mapping in China. This system will definitively supply techniques and softwares into any level of GSDF and open a path for Digital Earth.

Acknowledgments
The authors would like to explicitly thank Dr. Juliang Shao for his polishing in English. This project is sponsored by Development Foundation of Surveying and Mapping, China National 863 Hi-tech Projects (No. 863-308-13-04(2)).

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