ALOS / PALSAR data processing for the entire observation period

JAXA Supercomputer System Annual Report February 2023-January 2024

Report Number: R23ER0100

Subject Category: Space Technology

Responsible Representative: Sobue Shin-ichi,Associate Chief office of Earth Observation Missions,Space Technology Directorate I
Contact Information: Kudoh fumio(kudoh.fumio@jaxa.jp)
Members: Takashi Goto, Hidetoshi Hayasaka, Fumio Kudoh, Shunsuke Murakami, Shouko Morisaki, Taroh Mutoh, Hidekazu Mikai, Toshimi Nakata, Katsuyuki Otsuka, Kazuhiro Oka, Nozomi Sakuma, Hiroyuki Yokokawa, Shoma Yamada, Nobuhiro Yamauchi, Tadahiro Yamamoto

Abstract

We will process data from Synthetic Aperture Radar (PALSAR) and AVNIR-2 acquired by the Advanced Land Observation Satellite “DAICHI” to generate and provide image products (Analysis Ready Data) that are highly user-friendly for users.

Reference URL

N/A

Reasons and benefits of using JAXA Supercomputer System

JAXA is working on data disclosure to expand the use of Earth observation satellite data.

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

In addition, regarding AVNIR-2, 1B1/1B2 processing was carried out.

A JSS system was used to quickly provide this data to external users.

Achievements of the Year

This year, we processed 1B1 and 1B2 of AVNIR-2.

The data is EORC’s ALOS-related O&F

https://www.eorc.jaxa.jp/ALOS/jp/dataset/alos_open_and_free_j.htm

As shown, it is open to the public free of charge.

The number of scenes processed is

1B1:1,461,389

1B2:1,492,686

The number of playback IDs to be processed after excluding low quality L0 is 43,847

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: 16 Minute(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	105047.76	0.11
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	167.50	0.14
/data and /data2	105779.83	0.65
/ssd	0.00	0.00

Archiver Resources
Archiver Name	Storage Used (TiB)	Fraction of Usage*2(%)
J-SPACE	2467.25	8.89

*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.