Characteristics of ASTER GDEM version 2

Tetsushi Tachikawa*, Masami Hato, Manabu Kaku, Akira Iwasaki

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

407 Citations (Scopus)


The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Global Digital Elevation Model (GDEM) was released to the public in July 2009. The GDEM version 2, currently under development, is reproduced using an updated algorithm and contains new ASTER data observed after September 2008. Validation study of the trial and beta version of GDEM version 2 was carried out to investigate its characteristics such as geolocation error, elevation error and horizontal resolution. The results of the study confirmed that elevation offset and horizontal resolution will be greatly improved in version 2 and the enhanced horizontal resolution will serve to reduce the standard deviation of elevation and geolocation error.

Original languageEnglish
Title of host publicationInternational Geoscience and Remote Sensing Symposium (IGARSS)
Number of pages4
Publication statusPublished - 2011
Externally publishedYes
Event2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011 - Vancouver, BC
Duration: 2011 Jul 242011 Jul 29


Other2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011
CityVancouver, BC


  • DEM
  • GDEM

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Computer Science Applications


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