The datum of Digital Elevation Model of North Hemisphere of Mercury, included in the archive, derived from raster data of Mercury Laser Altimeter (MLA) Mapping Phase, version 2 of MESSENGER mission, and distributed by Planetary Data System (PDS) of NASA. Base resolution of the datum is 1/64°. Also data with auxiliary resolution of 1/16° was used too.
The datum presented here generally in form of .ZRS-files (stands Zipped Raster Set), which is proprietary compressed format of author of the datum. Separated files of the datum are in hierarchical and multi-resolution relation for optimization of speed and appearance upon using in Spatial Aspect Viewer and Spatial Aspect Explorer. Also the data was undergoing recovery of original values of missed data. The neediness of the recovering results from actual using of plain zero values instead of stated missed values for missed samples in the original data. The recovering was performed by using a sophisticated algorithm, which can filter such missed values from actual zero values.
Also the datum contents set of spatial regions covered respective quadrangles of Mercury.
MercuryLongLatH.zip - Size: 163,920,077 bytes (156 MB); MD5: 9C0CB5B31BBC6C50C33CD4FB33BC441E.
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