Nowadays, various data processing technique is developed through development of satellite system. Especially, data processing service via internet help user to get the GNSS data processing result more precise and easily. Thus, online data process system is operated and developed by various research groups and national. But this service is difficult to use in domestic cadastral survey because reference point and coordinate system problems. And these services have fault of a long processing time. In this study, we developed the online data processing system for a domestic cadastral survey. This system is calculated coordinate using NGII CORS(SUWN) fiducially. And use PPP technique by GIPSY-OASIS. Also it can use the precise orbit and ultra-rapid orbit by user choice. Current system is Windows-based user interface, as a initially developed version. If user choose the observation data which want to calculate the coordinate, then is uploaded to GIPSY-OASIS server through FTP. After upload is complete, server automatically calculate coordinate, and send the report about result using e-mail. And it takes 2 minutes runtime on the basis of the 3 sessions.

Keywords: online GNSS data processing, GIPSY-OASIS, precise point positioning