ALOS / PALSAR data processing for the entire observation period

JAXA Supercomputer System Annual Report February 2025-January 2026

Report Number: R25ER0100

Subject Category: Space Technology

Responsible Representative: Kankaku Yukihiro, ALOS-2 mission manager, Space Technology Directorate I
Contact Information: Mikai Hidekazu(mikai.hidekazu2@jaxa.jp)
Members: Masanori Doutsu, Takashi Goto, Hidetoshi Hayasaka, Fumio Kudoh, Hiroshi Mori, Taroh Mutoh, Hidekazu Mikai, Toshimi Nakata, Katsuyuki Otsuka, Kazuhiro Oka, Hiroshi Yamato

Abstract

Processing the synthetic aperture radar (PALSAR / PALSAR-2) data acquired by the terrestrial observation technology satellites `` DAICHI '' and `` DAICHI-2 '' to generate user-friendly image

Reference URL

N/A

Reasons and benefits of using JAXA Supercomputer System

JAXA is developing data disclosure to expand the use and spread of earth observation satellite data.

As part of this, the previous system JSS2 processes the data for the entire ALOS / PALSAR observation period and archives a large amount of data in J-SPACE.

We used the JSS system to quickly provide this data to external users.

Achievements of the Year

There were no PALSAR full-scale processing results this fiscal year,

and the number of services provided was 1, covering 779 scenes. (Excluding those via G-Portal)

Publications

N/A

Usage of JSS

Computational Information

Process Parallelization Methods: N/A
Thread Parallelization Methods: N/A
Number of Processes: 1
Elapsed Time per Case: 1 Second(s)

JSS3 Resources Used

Fraction of Usage in Total Resources*1(%): 0.01

Details

Please refer to System Configuration of JSS3 for the system configuration and major specifications of JSS3.

Computational Resources
System Name	CPU Resources Used (Core x Hours)	Fraction of Usage*2(%)
TOKI-SORA	0.00	0.00
TOKI-ST	4262.20	0.00
TOKI-GP	0.00	0.00
TOKI-XM	0.00	0.00
TOKI-LM	0.00	0.00
TOKI-TST	0.00	0.00
TOKI-TGP	0.00	0.00
TOKI-TLM	0.00	0.00

File System Resources
File System Name	Storage Assigned (GiB)	Fraction of Usage*2(%)
/home	0.00	0.00
/data and /data2	102399.83	0.67
/ssd	0.00	0.00

Archiver Resources
Archiver Name	Storage Used (TiB)	Fraction of Usage*2(%)
J-SPACE	2471.55	7.52

*1: Fraction of Usage in Total Resources: Weighted average of three resource types (Computing, File System, and Archiver).

*2: Fraction of Usage：Percentage of usage relative to each resource used in one year.

ISV Software Licenses Used

ISV Software Licenses Resources
	ISV Software Licenses Used (Hours)	Fraction of Usage*2(%)
ISV Software Licenses (Total)	0.00	0.00

*2: Fraction of Usage：Percentage of usage relative to each resource used in one year.