[S-GD02] Geodesy and Global Geodetic Observing System

[SGD02-P04] A report that methods of survey of terrain information in the Antarctic region by satellites

*Jun Okamoto¹, Yutaka Horaku¹, Takashi Shibayama¹, Yasumitsu Arashiro¹, Hideyuki Takatama¹, Hiroki Hashimoto¹ (1.PASCO CORPORATION)

Keywords:Antarctica, SPOT6&7, ALOS-2, Photogrammetry, Radargrammetry

It is important to prepare basic information in Antarctica, and it is effective to use aerial photographs to efficiently survey of terrain information. However, aerial photography is limited due to the difficulty of operating aircraft in special and harsh environments such as polar regions. For this reason, satellite imagery is being actively used to prepare a wide range of digital terrain model and map data in the Antarctic region. Japan's 1 / 50,000 topographic map of this region is created by ALOS / PRISM that captures panchromatic imagery with a resolution of 2.5 m globally, so the satellite was suitable for creating digital terrain model data. However, since the satellite has been ended 2011, the archived imagery are becoming old for the purpose of grasping the current topography, and there are areas where the surface cannot be confirmed due to clouds or blizzards. Therefore, in this report, we create digital terrain model data for the Antarctic region using both optical and SAR satellites, and verify whether it can be replaced with ALOS / PRISM as a means of survey of topographical information in Antarctica.