[GSDI Technical] Transformation of HDF-EOS metadata from the ECS model to ISO 19115-based XML
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Mon Mar 5 03:02:04 EST 2007
Computers & Geosciences
Volume 33, Issue 2, February 2007, Pages 238-247
Transformation of HDF-EOS metadata from the ECS model to ISO 19115-based XML
Yaxing Weia, Liping Dib, Baohua Zhaoa, Guangxuan Liaoc and Aijun Chenb
Nowadays, geographic data, such as NASA's Earth Observation System (EOS) data, are playing an increasing role in many areas, including academic research, government decisions and even in people's every lives. As the quantity of geographic data becomes increasingly large, a major problem is how to fully make use of such data in a distributed, heterogeneous network environment. In order for a user to effectively discover and retrieve the specific information that is useful, the geographic metadata should be described and managed properly. Fortunately, the emergence of XML and Web Services technologies greatly promotes information distribution across the Internet. The research effort discussed in this paper presents a method and its implementation for transforming Hierarchical Data Format (HDF)-EOS metadata from the NASA ECS model to ISO 19115-based XML, which will be managed by the Open Geospatial Consortium (OGC) Catalogue ServicesWeb Profile (CSW). Using XML and
international standards rather than domain-specific models to describe the metadata of those HDF-EOS data, and further using CSW to manage the metadata, can allow metadata information to be searched and interchanged more widely and easily, thus promoting the sharing of HDF-EOS data.
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