SEDAT
SEDAT ("Space Environment DATa System") provides access to near-original satellite data on the space environment in order to perform analyses and queries needed for evaluation of space environment hazards. History. The development was performed between 1999 and 2001 by the Rutherford Appleton Laboratory (RAL) and funded by the European Space Agency via its Space Environments and Effects Section. Description. The aim of the SEDAT project is to develop a new approach to the engineering analysis of the spacecraft charged-particle environments. The project assembled a database containing a large and comprehensive set of data about that environment as  measured in-situ by a number of space plasma missions. The user is able to select a set of space environment data appropriate to the engineering problem under study. The project developed a set of software tools, which can operate on the data retrieved from the SEDAT database. These tools allow the user to carry out a wide range of engineering analyses. This approach differs from traditional space environment engineering studies. In the latter the space environment is characterised by a model that is a synthesis of previous observations. However, in SEDAT the environment is characterised directly by the observations . This approach offers several advantages to the engineering analyst: The traditional approach would require the production, validation and dissemination of an updated model, which is a far more time-consuming activity. The SEDAT concept foresees access to distributed datasets, capture of processing methods and openness in analysis tools. SEDAT implementation. The implementation of SEDAT is divided into three main parts: Four demonstrations of the SEDAT system were performed in the original study: