Start of Data Distribution for Advanced Land Observing Satellite-2 “DAICHI-2” (ALOS-2)
ALOS-2 data and ALOS/PRSM data for which distribution will commence are characterized by the fact that they may be applied to various uses, such as enabling users to obtain detailed information about natural disasters swiftly, helping users to understand the land subsidence situation, as well as in the monitoring of sea ice and resource exploration.
This project was commissioned by the Japan Aerospace Exploration Agency (hereafter, “JAXA”) to RESTEC and PASCO Cooperation as a consortium , for the operation of ALOS-2 and the distribution of ALOS-2 data and ALOS/PRISM data to the general public. As the representative agency, RESTEC is responsible for the overall coordination of this project as well as the mission operation of ALOS-2. SPACE ENGINEERING DEVELOPMENT Co., Ltd. is responsible for satellite control. PASCO, as the data sales business operator, will work jointly with RESTEC to distribute ALOS-2 data and ALOS/PRISM.
[Features of ALOS-2 Data]
ALOS-2 (PALSAR-2) has a resolution of 1m×3m in Spotlight Mode, and is capable of carrying out observations at a higher resolution than ALOS (PALSAR). Furthermore, as it is a Synthetic Aperture Radar (SAR), it is also able to carry out observations regardless of weather conditions, or whether it is day or night. These capabilities enable it to understand hazardous situations more precisely, caused by natural disasters such as floods and volcanoes that happen frequently around the world. (Figure 1: Comparison of observation images obtained by ALOS/PALSAR and ALOS-2/PALSAR-2)
＜Wide-area observation and improvements in frequency of observations＞
The ALOS-2 satellite body can tilt right and left to observe on both sides. It is possible to expand its observation range to 2,320 km, three times greater than ALOS. It is also able to carry out observations quickly as a result of the significant reductions in revisit time to 14 days.
*Note : Advanced Land Observing Satellite “DAICHI” (ALOS): It is a Japanese land observing satellite that was operated from January 2006 to May 2011, and contributed to the work of carrying out high-definition Earth observations, drawing up and updating maps, disaster monitoring, and observation of regional environments. In this project, data obtained using the Panchromatic Remote-sensing Instrument for Stereo Mapping (PRISM) mounted on ALOS will be made available for sale.
[Figure 1]: Comparison of observation images obtained by ALOS/PALSAR and ALOS-2/PALSAR-2