| タイトル | Generation and dissemination of time and frequency standard: Algorithm of ensemble atomic time |
| その他のタイトル | 時間・周波数標準の発生と供給:原子時決定アルゴリズム |
| 著者（日） | 花土 ゆう子; 今江 理人; 相田 政則; 細川 瑞彦; 伊東 宏之; 中川 史丸; 清水 義行 |
| 著者（英） | Hanado, Yuko; Imae, Michito; Aida, Masanori; Hosokawa, Mizuhiko; Ito, Hiroyuki; Nakagawa, Fumimaru; Shimizu, Yoshiyuki |
| 著者所属（日） | 情報通信研究機構 電磁波計測部門 時間周波数計測グループ; 情報通信研究機構 電磁波計測部門 時間周波数計測グループ; 情報通信研究機構 企画部 企画室; 情報通信研究機構 電磁波計測部門 原子周波数標準グループ; 情報通信研究機構 電磁波計測部門 原子周波数標準グループ; 情報通信研究機構 電磁波計測部門 時間周波数計測グループ; 情報通信研究機構 電磁波計測部門 日本標準時グループ |
| 著者所属（英） | National Institute of Information and Communications Technology Time and Frequency Measurements Group, Applied Research and Standards Division; National Institute of Information and Communications Technology Time and Frequency Measurements Group, Applied Research and Standards Division; National Institute of Information and Communications Technology Research Planning Office, Strategic Planning Division; National Institute of Information and Communications Technology Atomic Frequency Standards Group, Applied Research and Standards Division; National Institute of Information and Communications Technology Atomic Frequency Standards Group, Applied Research and Standards Division; National Institute of Information and Communications Technology Time and Frequency Measurements Group, Applied Research and Standards Division; National Institute of Information and Communications Technology Japan Standard Time Group, Applied Research and Standards Division |
| 発行日 | 2004-05-31 |
| 発行機関など | National Institute of Information and Communications Technology
情報通信研究機構 |
| 刊行物名 | Journal of the National Institute of Information and Communications Technology
情報通信研究機構英文論文集 |
| 巻 | 50 |
| 号 | 1-2 |
| 開始ページ | 155 |
| 終了ページ | 167 |
| 刊行年月日 | 2004-05-31 |
| 言語 | eng |
| 抄録 | This article introduces the algorithm of ensemble atomic time. A more stable time scale than each component atomic clock can be made by calculating the weighted average of each clock. This calculation method is not the only one but the optimum algorithm changes to meet the research purposes and situations. The ALGOS(BIPM) and AT1(NIST) are introduced as the representative algorithms. ALGOS(BIPM) is for TAI (International Atomic Time) which has an excellent long-term stability, and AT1 (NIST) is for AT1 time-scale at NIST (National Institute of Standards and Technology) which is a real-time time scale. Also described are the algorithm of UTC (CRL) and some improvements of it. |
| キーワード | time standard; frequency standard; ensemble atomic time; algorithm; computer program; international atomic time; atomic clock; frequency stability; 時間標準; 周波数標準; 原子時間アンサンブル; アルゴリズム; 計算機プログラム; 国際原子時間; 原子時計; 周波数安定性 |
| 資料種別 | Technical Report |
| ISSN | 1349-3205 |
| SHI-NO | AA0047117016 |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/36664 |
