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 particular, in the Asian region, it serves as valuable data for understanding floods, landslides, and urbanization.

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

Target Data: PALSAR-3 / SM3 Mode (6 m) / Fixed PRF / Asia Region
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.