Study On Catalog Processing And Integrated Management For Lunar Science Data

Accompanying with the development of lunar and planetary exploration and the deep study in ground application, the nation has acquired and produced massive Lunar Science Data, which are the valuable resource for ground application and the foundation of achieving the lunar exploration final aim. Consequently, the study on integrated management for distributed lunar data and relation key technologies will bring great real meaning and scientific value for the nation lunar project and further planetary exploration mission planning. This dissertation focuses on the integrated management for lunar science data and study on the following aspects.Firstly, this dissertation proposes an integrated management Framework for lunar scientific data abbreviated to LSDB-Framework according to the analysis of certain integrated method for distributed spatial data, whose core is lunar scientific data catalog model. The framework provides a unionized retrieval view by distilling and collecting catalog information from distributed multi-source data, which is well in expansibility, retractility and maintenance.Secondly, the dissertation proposes a Catalogue Model for lunar scientific data based on PDS standard reference and certain science metadata model, the catalogue model covers multi-type and multi-scale lunar scientific data and poses multi-layer and multi-dimension description.Thirdly, the dissertation studies certain key technologies for catalog data collection and registration, such as catalog data auto-distilling, information exchange and effective data loading, which are the base of the data retrieval.In addition, the dissertation discusses constrain issues for distributed scientific data search and retrieval, and proposes solution by studying information retrieval technology for massive lunar scientific data and related key technologies based on the catalog model, which bring effective method and means for lunar scientific data search and retrieval.Finally, an antitype system named LSDB-MS is carried out and validates that all key technologies and solution discussed in this dissertation is feasible, dependable and effective. The system has been deployed and tested in the National Lunar and Deep Space Exploration Ground Application Center.