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Small synthetic aperture radar satellite

JAXA Supercomputer System Annual Report April 2017-March 2018

Report Number: R17ECMP07

Subject Category: Competitive Funding

PDF available here

  • Responsible Representative: Takahiro Yamada, Institute of Space and Astronautical Science, Division of Spacecraft Engineering
  • Contact Information: Tomoya Fukami fukami.tomoya@ac.jaxa.jp
  • Members: Tomoya Fukami, Hirobumi Saito, Kengo Ando, Pyne Budhaditya, Prilando Rizki Akbar

Abstract

We are goint to develop synthetic aperture radar system that can be onboard on a 100kg class satellite and to verify it on ground. Conventionally radar observations have required large or medium satellite with 500-1000kg mass. Our research and development may change earth observation drastically.

Reference URL

Please refer to 'Impulsing Paradigm Change through Disruptive Technologies Program ImPACT: R&D Programs'.

Reasons for using JSS2

We utilize super-computer for design of slot array antennas dedicated for small synthetic aperture radar. Design of slot array antenna requires a super-computer that is provided with high speed and large memory.

Achievements of the Year

We performed simulation for 4 panels antenna and antenna network feeder system for antenna panels array. Here the, we simplified the simulation of network feeder system for 7 antenna panels array with 3.5 antenna panels array simulation. The simulation results are shown in Fig.1. In this simulation, in-phase and uniform excitation to the parallel-plate antenna are expected. Furthermore, the simulation results which are showing performance of each antenna panels is shown in Fig.2.

Annual Reoprt Figures for 2017

Fig.1: Tournament feeder network design for 7 antenna panels array.

 

Annual Reoprt Figures for 2017

Fig.2: Antenna Panels simulation results.

 

Publications

■ Peer-reviewed papers

1) B. Pyne, P.R. Akbar, V. Ravindra, H. Saito, J. Hirokawa, T. Fukami, "Slot-Array Antenna Feeder Network for Space-borne X-band Synthetic Aperture Radar", submitted to the Proceedings of IEEE Transactions on Antennas and Propagation, under review as of March 12, 2018.

■ Presentations

1) B. Pyne, V. Ravindra, P.R. Akbar, H. Saito, J. Hirokawa, "Performance Analysis of Edge-feed Rectangular Parallel Plate Slot-array Antenna Panel for Compact Space-borne X-band SAR System", Proceedings of the International Conference on Electromagnetics in Advanced Applications (ICEAA) - IEEE Topical Conference on Antennas and Propagation in Wireless Communications (APWC), Verona, September 2017, pp. 407-410.

■ URLs for the Research Results on the Web

1) http://www.isas.jaxa.jp/topics/001134.html

Usage of JSS2

Computational Information

  • Process Parallelization Methods: MPI
  • Thread Parallelization Methods: Intel MKL
  • Number of Processes: 2 - 80
  • Elapsed Time per Case: 12.00 hours

Resources Used

 

Fraction of Usage in Total Resources*1(%): 0.46

 

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 153.80 0.00
SORA-PP 443,619.62 5.55
SORA-LM 92,167.94 47.46
SORA-TPP 175.00 0.02

 

File System Resources
File System Name Storage Assigned
(GiB)
Fraction of Usage*2(%)
/home 991.82 0.69
/data 22,842.42 0.42
/ltmp 11,718.76 0.88

 

Archiver Resources
Archiver Name Storage Used
(TiB)
Fraction of Usage*2(%)
J-SPACE 16.11 0.69

*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.

JAXA Supercomputer System Annual Report April 2017-March 2018


ここは、サイドバー・エリアの先頭です。

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Language / 言語

"Annual Report" available

How to use JSS3

To use JSS3, please refer to "How to use JSS3" page .

Location

Chofu Aerospace Center
7-44-1 Jindaiji Higashi-machi, Chofu-shi, Tokyo