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| Presentation | 2022-08-19 11:10 Electromagnetic Interference Characteristics of Aircraft Radio Altimeters Due to In-band and Out-band Interference Signals -- Evaluation of Variations in EMI Characteristics of the Same Type of Pulsed Altimeter -- Shunichi Futatsumori, Norihiko Miyazaki, Noriaki Hiraga (ENRI)  SANE2022-49 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This report discusses electromagnetic interference characteristics of aircraft radio altimeters due to in-band and out-band interference signals. The aircraft radio altimeters are operated between 4.2−4.4 GHz. However, Sub-6 5G mobiles systems are introduced for the adjacent band those of the radio altimeter band. To investigate the interference characteristics of actual radio altimeter, the radio altimeter interference threshold values are measured based on RTCA DO-155 test set-up. Firstly, an overview of pulsed radio altimeter is discussed. Then, the measurement set-up based on DO-155 test procedures and the measurement parameters are discussed. Finally, the interference threshold values of RAs are discussed based on the measured results. The interference threshold value for the in-band test is -93.0 dBm/MHz at 1,500 ft. In addition, the interference threshold value for the out-band test is -57.7 dBm at 1,500 ft with 100 MHz guard band, however, it is obtained at lower loop loss values compared with that of defined by DO-155. Because of this, the interference threshold value will be getting lower with the DO-155 loop loss value. | |
| 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. 122, no. 151, SANE2022-49, pp. 92-96, Aug. 2022. | |
| Paper # | SANE2022-49 | |
| Date of Issue | 2022-08-11 (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 | SANE2022-49 |
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| Conference Information | |
| Committee | SANE |
| Conference Date | 2022-08-18 - 2022-08-19 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | SANE |
| Conference Code | 2022-08-SANE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Electromagnetic Interference Characteristics of Aircraft Radio Altimeters Due to In-band and Out-band Interference Signals |
| Sub Title (in English) | Evaluation of Variations in EMI Characteristics of the Same Type of Pulsed Altimeter |
| 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) |
| 3rd Author's Name | Noriaki Hiraga |
| 3rd Author's Affiliation | Electronic Navigation Research Institute (ENRI) |
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| Speaker | Author-1 |
| Date Time | 2022-08-19 11:10:00 |
| Presentation Time | 25 minutes |
| Registration for | SANE |
| Paper # | SANE2022-49 |
| Volume (vol) | vol.122 |
| Number (no) | no.151 |
| Page | pp.92-96 |
| #Pages | 5 |
| Date of Issue | 2022-08-11 (SANE) |
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