Volume 35 Issue 5
Sep.  2015
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Hu Yasi, Shi Peng, Duan Ran. Pdqg-R Subdivision Mode And Encoding In Heliocentric Coordinate System[J]. Journal of Space Science, 2015, 35(5): 626-633. doi: 10.11728/cjss2015.05.626
Citation: Hu Yasi, Shi Peng, Duan Ran. Pdqg-R Subdivision Mode And Encoding In Heliocentric Coordinate System[J]. Journal of Space Science, 2015, 35(5): 626-633. doi: 10.11728/cjss2015.05.626

Pdqg-R Subdivision Mode And Encoding In Heliocentric Coordinate System

doi: 10.11728/cjss2015.05.626
  • Received Date: 2014-07-26
  • Rev Recd Date: 2015-02-03
  • Publish Date: 2015-09-15
  • With the quick increase of space data, in order to meet the higher demand of data visualization and data access efficiency, reasonable data organization and management is needed. Based on the existing 2D subdivision models, for the ecliptic plane and meridian plane which are over the Sun centroid, a new model, PDQG-R (Plane Degradation Quad-Tree Grid), is put forward. Encoding scheme of grids is also given. Taken solar wind data as an example, the model not only resolves the problem that grids near to heliocentric are too dense, but also meets the requirement that resolution in radius is not equal to that in longitude and latitude. Besides, it provides hierarchical multi-resolution data, and can support the organization and management of massive space data effectively.


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