講演抄録/キーワード |
講演名 |
2021-11-12 14:20
Sub-6帯5Gモバイルシステムによるパルス型電波高度計の電磁干渉特性評価 ~ DO-155試験法に基づく帯域内干渉および帯域外干渉しきい値測定 ~ ○二ッ森俊一・宮崎則彦(電子航法研) SANE2021-58 |
抄録 |
(和) |
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. |
(英) |
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. |
キーワード |
(和) |
5G mobile commutation system / Electromagnetic interference / Radio altimeter / Radiation power / Spectrum sharing / Wireless Avionics Intra-Communication / / |
(英) |
5G mobile commutation system / Electromagnetic interference / Radio altimeter / Radiation power / Spectrum sharing / Wireless Avionics Intra-Communication / / |
文献情報 |
信学技報, vol. 121, no. 236, SANE2021-58, pp. 139-143, 2021年11月. |
資料番号 |
SANE2021-58 |
発行日 |
2021-11-04 (SANE) |
ISSN |
Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
SANE2021-58 |
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