講演抄録/キーワード |
講演名 |
2008-11-25 10:20
衛星ー地上間時刻比較での誤差要因について ○中村真帆・浜 真一・雨谷 純・高橋靖宏・中川史丸・藤枝美穂・後藤忠広・相田政則(NICT) SANE2008-70 |
抄録 |
(和) |
National Institute of Information and Communications Technology (NICT) plans to construct time comparison system between a satellite, which is equipped with an atomic clock, and an earth station using TWSTFT (two way satellite time and frequency transfer). TWSTFT system can cancel most of the propagation delays such as ionospheric and tropospheric delays at same frequency and at a common path. However, when the frequencies of transmission and reception are different, ionospheric delay will be considerable. In addition, in case the satellite is non-geostationary, the position changes of the satellite should be considered. Some estimation of delays due to these error sources are carried out for highly-precise time comparison on the premise of using a quasi-zenith satellite (QZS). |
(英) |
National Institute of Information and Communications Technology (NICT) plans to construct time comparison system between a satellite, which is equipped with an atomic clock, and an earth station using TWSTFT (two way satellite time and frequency transfer). TWSTFT system can cancel most of the propagation delays such as ionospheric and tropospheric delays at same frequency and at a common path. However, when the frequencies of transmission and reception are different, ionospheric delay will be considerable. In addition, in case the satellite is non-geostationary, the position changes of the satellite should be considered. Some estimation of delays due to these error sources are carried out for highly-precise time comparison on the premise of using a quasi-zenith satellite (QZS). |
キーワード |
(和) |
/ / / / / / / |
(英) |
Quasi-Zenith Satellite System / TWSTFT / ionosphere / time comparison / / / / |
文献情報 |
信学技報, vol. 108, no. 318, SANE2008-70, pp. 39-42, 2008年11月. |
資料番号 |
SANE2008-70 |
発行日 |
2008-11-17 (SANE) |
ISSN |
Print edition: ISSN 0913-5685 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 |
SANE2008-70 |