Several space agencies such as NASA are continuously collecting datasets of earth dynamics - e.g., temperature, vegetation, and cloud coverage - through satellites. This data is stored in a publicly available archive for scientists and researchers and is very useful for studying climate, desertification, and land use change. The benefit of this data comes from its richness as it provides an archived history for over 15 years of satellite observations. Unfortunately, the use of such data is very limited due to the huge size of archives (> 500TB) and the limited capabilities of traditional applications. In this demo, we present Shahed, an interactive system which provides an efficient way to index, query, and visualize satellite datasets available in NASA archive. Shahed is composed of four main modules. The uncertainty module resolves data uncertainty imposed by the satellites. The indexing module organizes the data in a novel multi-resolution spatio-temporal index designed for satellite data. The querying module uses the indexes to answer both spatiotemporal selection and aggregate queries provided by the user. The visualization module generates images, videos, and multi-level images which gives an insight of data distribution and dynamics over time. This demo gives users a hands-on experience with Shahed through a map-based web interface in which users can browse the available datasets using the map, issue spatiotemporal queries, and visualize the results as images or videos.
|Original language||English (US)|
|Title of host publication||2015 IEEE 31st International Conference on Data Engineering, ICDE 2015|
|Publisher||IEEE Computer Society|
|Number of pages||4|
|State||Published - May 26 2015|
|Event||2015 31st IEEE International Conference on Data Engineering, ICDE 2015 - Seoul, Korea, Republic of|
Duration: Apr 13 2015 → Apr 17 2015
|Name||Proceedings - International Conference on Data Engineering|
|Other||2015 31st IEEE International Conference on Data Engineering, ICDE 2015|
|Country/Territory||Korea, Republic of|
|Period||4/13/15 → 4/17/15|
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© 2015 IEEE.