Precise Orbit Determination by using MADOCA on JSS2

JAXA Supercomputer System Annual Report April 2020-March 2021

Report Number: R20ER0800

Subject Category: Space Technology

Responsible Representative: Koichi Inoue, Space Technology Directrate I, Satellite Navigation Unit
Contact Information: TAKIGUCHI Hiroshi(takiguchi.hiroshi@jaxa.jp)
Members: Hiroshi Takiguchi, Sho Miyoshi

Abstract

Satellite Navigation Unit has been generating the precise orbit and clock products of GNSS satellites by using MADOCA (Multi-GNSS Advanced Demonstration tool for Orbit and Clock Analysis), and been distributing to user via network routinely. On the JSS2, we aim to realize fast computation for the long-term data analysis and simulation.

Reference URL

Please refer to ‘MADOCA Products‘.

Reasons and benefits of using JAXA Supercomputer System

To improve the MADOCA products accuracy, we need to do long-term data analysis. By using JSS2, we have been expecting the reduction of the data analysis time.

Achievements of the Year

In this fiscal year, we decided to postponed the plan of using JSS to next fiscal year, because of the COVID-19 state of emergency and also the renewal of JSS2 system to JSS3. Therefore, we don’t have any result in this fiscal year.

We are planning to re-analysis of our MADOCA offline product by using latest MADOCA software and JSS3 in the next fiscal year.

Publications

N/A

Usage of JSS

Computational Information

Process Parallelization Methods: N/A
Thread Parallelization Methods: OpenMP
Number of Processes: 1
Elapsed Time per Case: 30 Minute(s)

Resources Used(JSS2)

Fraction of Usage in Total Resources*1(%): 0.02

Details

Please refer to System Configuration of JSS2 for the system configuration and major specifications of JSS2.

Computational Resources
System Name	Amount of Core Time (core x hours)	Fraction of Usage*2(%)
SORA-MA	0.00	0.00
SORA-PP	0.00	0.00
SORA-LM	0.00	0.00
SORA-TPP	12,323.36	1.16

File System Resources
File System Name	Storage Assigned (GiB)	Fraction of Usage*2(%)
/home	100.14	0.09
/data	2,584.46	0.05
/ltmp	1,953.13	0.17

Archiver Resources
Archiver Name	Storage Used (TiB)	Fraction of Usage*2(%)
J-SPACE	0.00	0.00

*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.

Resources Used(JSS3)

Fraction of Usage in Total Resources*1(%): 0.00