The demand for high accuracy requires the use of high grade, geodetic GPS measurement equipment, but also a careful processing of the GPS raw-data. A fast availability of GPS-based products can only be achieved through an automated data processing system.
An automatic system for the processing of GPS-data was developed within the project GITEWS and integrated into the Indonesian tsunami early warning center (INATEWS) in Jakarta. This system is in operation since end of 2008 and processes data of GPS-stations on land (GITEWS real-time reference stations, GPS-stations at tide gauges and other) as well as GPS-data from GITEWS buoys. The exact positions of the GPS-antennas installed on these buoys are determined relatively to multiple GPS reference stations on land.
A new developed, web-based, graphical user interface (Web-GUI) allows an easy monitoring of GPS-networks and the automatic GPS processing system itself. With the help of this Web-GUI the proper function of all system components as well as a possible performance reduction becomes visible for the staff at the early warning center (24 hours / 7 days operation) and also from other locations with Internet access at any time.