Satellites and Spacecraft Advanced Land Observing Satellite-2 "DAICHI-2" (ALOS-2)

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May 14, 2015 Updated

Agreement concluded with MLIT on DAICHI-2 observation data

Agreement concluded with MLIT on DAICHI-2 observation data

JAXA concluded an agreement with the Kyushu Regional Development Bureau of the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) on April 30, 2015, to provide observation data by the Advanced Land Observing Satellite-2 “DAICHI-2” (ALOS-2). The purpose of the agreement is to survey (1) secular changes of landscape and ash fall and (2) isolated islands for their up keep. We will work together to conduct surveys more efficiently with broader covering areas by mutually sharing and stud...

About Advanced Land Observing Satellite-2 "DAICHI-2" (ALOS-2)

The Earth needs a health check

The Advanced Land Observing Satellite-2 (ALOS-2) is follow-on mission from the "DAICHI", which contributed to cartography, regional observation, disaster monitoring, and resource surveys. ALOS-2 will succeed this mission with enhanced capabilities.
Specifically, JAXA is conducting research and development activities to improve wide and high-resolution observation technologies developed for DAICHI in order to further fulfill social needs.

Characteristics of Advanced Land Observing Satellite-2 "DAICHI-2" (ALOS-2)

1) Disaster monitoring of damage areas, both in cosiderable detail, and when these areas may be large
2) Continuous updating of data archives related to national land and infrastructure information
3) Effective monitoring of cultivated areas
4) Global monitoring of tropical rain forests to identify carbon sinks.

The state-of-the-art L-band Synthetic Aperture Radar-2 (PALSAR-2) aboard ALOS-2, which is an active microwave radar using the 1.2GHz frequency range, will, in responding to society's needs, have enhanced performance compared to DAICHI/PALSAR. The PALSAR-2 is capable of observing day and night, and in all weather conditions.

Precise diagnosis of the earth using "L-band SAR" Japanese advanced technology

ALOS-2 will have a spotlight mode (1 to 3m) and a high resolution mode (3 to 10m), whilst PALSAR has a 10m resolution. It will allow comprehensive monitoring of disasters by providing users with more detailed data than DAICHI/PALSAR.
The observation frequency of ALOS-2 will be improved by greatly expanding the observable range of the satellite up to about 3 times, througe an improvement in obserble areas (from 870km to 2,320km), as well as giving ALOS-2 a right-and-left looking function, currently not available on DAICHI/PALSAR.

Mission talk by team leaders

Project Manager Shinichi Suzuki

Here are messages from Project Managers.

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