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| Presentation | 2021-11-12 14:20 Evaluation of Pulsed Aircraft Radio Altimeter Electromagnetic Interference Characteristics due to Sub-6 band 5G Mobile Communication Systems -- Measurements of in-band and out-band interference threshold power level based on DO-155 test procedure -- Shunichi Futatsumori, Norihiko Miyazaki (ENRI)  SANE2021-58 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This paper discusses the evaluation of pulsed aircraft radio altimeter (RA) electromagnetic interference susceptibility characteristics due to Sub-6 band 5G mobile communication systems. Sub-6 5G mobile communication systems have recently introduced frequency bands that are close to those of the RA band, which are allocated between 4.2 and 4.4 GHz. The safety and security operation of the RAs is critical as an aircraft safety avionics. To investigate the coexistence conditions of aircraft RAs and 5G mobile communication systems, electromagnetic interference susceptibility characteristics of the RAs are required. Firstly, the specification of the pulsed RA and measurement set-up based on DO-155 test procedures are discussed. Then, the measurement conditions such as the altitude and interference signal frequency are explained. Finally, the interference threshold values of RAs are discussed based on the measured results. As altitude increases, the interference threshold power decreases. The highest altitude measured is 1,500 feet. At the same test conditions and for the same product number RA, the variations in interference threshold power are greater than 10 dB. For the in-band and out-of-band interference tests, the minimum interference threshold values are -57.7 dBm and -86.8 dBm/MHz, respectively. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | 5G mobile commutation system / Electromagnetic interference / Radio altimeter / Radiation power / Spectrum sharing / Wireless Avionics Intra-Communication / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 236, SANE2021-58, pp. 139-143, Nov. 2021. | |
| Paper # | SANE2021-58 | |
| Date of Issue | 2021-11-04 (SANE) | |
| 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 | SANE2021-58 |
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| Conference Information | |
| Committee | SANE |
| Conference Date | 2021-11-11 - 2021-11-12 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | ICSANE2021/Workshop on subsurface electromagnetic measurement |
| Paper Information | |
| Registration To | SANE |
| Conference Code | 2021-11-SANE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Evaluation of Pulsed Aircraft Radio Altimeter Electromagnetic Interference Characteristics due to Sub-6 band 5G Mobile Communication Systems |
| Sub Title (in English) | Measurements of in-band and out-band interference threshold power level based on DO-155 test procedure |
| Keyword(1) | 5G mobile commutation system |
| Keyword(2) | Electromagnetic interference |
| Keyword(3) | Radio altimeter |
| Keyword(4) | Radiation power |
| Keyword(5) | Spectrum sharing |
| Keyword(6) | Wireless Avionics Intra-Communication |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Shunichi Futatsumori |
| 1st Author's Affiliation | Electronic Navigation Research Institute (ENRI) |
| 2nd Author's Name | Norihiko Miyazaki |
| 2nd Author's Affiliation | Electronic Navigation Research Institute (ENRI) |
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| Speaker | Author-1 |
| Date Time | 2021-11-12 14:20:00 |
| Presentation Time | 20 minutes |
| Registration for | SANE |
| Paper # | SANE2021-58 |
| Volume (vol) | vol.121 |
| Number (no) | no.236 |
| Page | pp.139-143 |
| #Pages | 5 |
| Date of Issue | 2021-11-04 (SANE) |
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