ALOS-4, which began its normal observation operations on April 1, 2025, has been accumulating earth observation data for over a year.
This page provides the cumulative observation footprint of ALOS-4 acquired during the one-year period from April 1, 2025 to March 31, 2026. The footprint data from the ALOS-4/SM3 mode is organized by region and made available for download.

PALSAR-3, onboard ALOS-4, is an L-band SAR sensor capable of all-weather, day-and-night observations. It is widely used for applications such as forest monitoring, disaster assessment, and infrastructure monitoring. In South America, there is a growing need to utilize SAR data for purposes such as monitoring deforestation in the Amazon and detecting illegal development. The L-band PALSAR-3 has excellent vegetation penetration capabilities and can capture information that is difficult to obtain with optical satellites.

This page offers the following features:
・Comprehensive coverage of observed footprint data across South America
・Scene-based browsing
・Direct download of footprint data (Shapefile / CSV format)

Target Data: PALSAR-3 / SM3 Mode (6 m) / Fixed PRF / South America
Target Period: 2025/4/1～2026/3/31
▶ Download Shapefile
▶ Download CSV File

We encourage you to explore observation coverage in your area of interest.