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Paper Abstract and Keywords
Presentation 2026-08-27 11:00
Comparison of Simulation Methods for Inter-Satellite Communications for Ultra-Small Satellites Formation Flight
Kaito Terasaka, Takana Kaho (SIT), Atsushi Noda, Sumio Morioka, Takahiro Inagawa (IST) SAT2026-34
Abstract (in Japanese) (See Japanese page) 
(in English) Research is underway to realize direct communication between ground terminals and a phased-array antenna constructed in low Earth orbit (LEO) by flying formations of CubeSats with dimensions of 10 cm × 10 cm × 10 cm (1U) or smaller. In inter-satellite communications during formation flight, the satellites are expected to act as reflectors, resulting in frequency-selective fading. Electromagnetic simulations based on the finite element method (FEM) and ray tracing are widely used to quantitatively evaluate such communication impairments. This paper compares FEM and ray-tracing simulations using a model consisting of 25 satellites. The results show that when both the satellite size and the inter-satellite distance are small compared with the wavelength, ray tracing fails to account for significant wave phenomena, and therefore does not reproduce the fading observed in the FEM results. In addition, changing the maximum number of reflections and the minimum ray density per wavelength had little effect on the simulation results. Finally, X-band simulations of a 100-satellite formation were carried out using ray tracing. Compared with the 25-satellite case, stronger multipath effects were observed, suggesting that ray tracing is a promising approach for large-scale electromagnetic simulations.
Keyword (in Japanese) (See Japanese page) 
(in English) Ultra-small satellites / Formation flight / Inter-satellite communication / Radio wave propagation / Electromagnetic field simulation / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 158, SAT2026-34, pp. 1-4, Aug. 2026.
Paper # SAT2026-34 
Date of Issue 2026-08-20 (SAT) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF SAT2026-34

Conference Information
Committee SAT RCS  
Conference Date 2026-08-27 - 2026-08-28 
Place (in Japanese) (See Japanese page) 
Place (in English) BENEX Nagasaki Brick Hall 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Satellite Communications, Broadcasting, Forward Error Correction, Wireless Communications, etc. 
Paper Information
Registration To SAT 
Conference Code 2026-08-SAT-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Comparison of Simulation Methods for Inter-Satellite Communications for Ultra-Small Satellites Formation Flight 
Sub Title (in English)  
Keyword(1) Ultra-small satellites  
Keyword(2) Formation flight  
Keyword(3) Inter-satellite communication  
Keyword(4) Radio wave propagation  
Keyword(5) Electromagnetic field simulation  
Keyword(6)  
Keyword(7)  
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1st Author's Name Kaito Terasaka  
1st Author's Affiliation Shonan Institute of Technology (SIT)
2nd Author's Name Takana Kaho  
2nd Author's Affiliation Shonan Institute of Technology (SIT)
3rd Author's Name Atsushi Noda  
3rd Author's Affiliation Interstellar Technologies Inc. (IST)
4th Author's Name Sumio Morioka  
4th Author's Affiliation Interstellar Technologies Inc. (IST)
5th Author's Name Takahiro Inagawa  
5th Author's Affiliation Interstellar Technologies Inc. (IST)
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Speaker Author-1 
Date Time 2026-08-27 11:00:00 
Presentation Time 25 minutes 
Registration for SAT 
Paper # SAT2026-34 
Volume (vol) vol.126 
Number (no) no.158 
Page pp.1-4 
#Pages 4 
Date of Issue 2026-08-20 (SAT) 

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