youtube: https://www.youtube.com/watch?v=aN42HgLXWGY
youtube: https://www.youtube.com/watch?v=FS_4_O0V05o
ALOS PRISM
web: https://www.eorc.jaxa.jp/ALOS/en/alos/sensor/prism_e.htm
Topography data created by ALOS/PRISM sensor ... "AW3D" digital surface model
youtube: https://www.youtube.com/watch?v=YUo9Xgdnn08
download-page: https://www.eorc.jaxa.jp/ALOS/en/dataset/aw3d30/aw3d30_e.htm
QGIS page: https://qgis.org/ ... A free GIS (geographical information system) software. You can get it free. If you are intereted, please download and install it to your computer, then try to handle the AW3D data on it!