Operational Earth observation missions con-tinuously generate huge quantities of satellite data representing the momentary condition of the land surface, the oceans and the at-mosphere of our planet. These so-called pay-load data are received, archived and pro-cessed around the clock, and are used to generate a wide range of value-added infor-mation products with spatial and temporal features. They are made available for the most varied applications, examples being sur-face tempe-rature maps, digital elevation models, ozone concentration maps and multi-spectral images.
To handle the quantities and diversity of data accumulating from DFD Earth observation missions, the Data and Information Management System (DIMS) is being developed at the department of Information Technology. Emphasis is not only placed on controlling the processes of product genera-tion (data processing) but also on longterm archiving of all earth observation data in order to preserve this valuable legacy for future generations. Efficient and uniform operation of se-veral missions within one system and the continuous integration of new missions are additional important aspects of the work of this team.
Via the interactive Web interface EOWEB, DIMS makes it possible for the user commu-nity to search for and order data products. The team also develops and operates Web mapping services which allow access using standardized system interfaces and direct use of the data, for example in geoinformation systems. In cooperation with the European Space Agency ESA, we support internationally harmonized access to Earth observation data for use in the European Copernicus program.
The management of payload data is an essential task for the ground segments of Earth observation missions and it involves important interfaces to mission planning, satellite control, data reception and data use. Therefore, agreements with all the working groups involved are particularly required when planning new missions. Processes need to be analyzed, requirements and constraints understood, and interfaces and data struc-tures coordinated. After this foundation has been laid, the team develops modular software components and system configurations and carries out extensive verification testing. Finally, the results are incorporated in the routine processes of multimission operations.