@techreport{oai:jaxa.repo.nii.ac.jp:00044680,
 author = {松島, 弘一 and MATSUSHIMA, Koichi},
 month = {Oct},
 note = {It is always necessary, in the analysis of satellite motion, to transform the geoequatorial coordinate system of ture of date to the Earth-fixed system and, without accurate values of AT-UT1, the transformation cannot be made precisely. AT-UT1, which depend upon the irregular rotation of the Earth, can be obtained only by observation, and prediction of AT-UT1 is very difficult because of the irregularity of the Earth’s rotation due to unclarified causes. Recently, Luo Shi-Fang et al. made an analysis of the periodicity of the irregular rotation of the Earth and found 12 periodic terms ranging from 9 years to 180 years. The combinations of these terms are in good agreement with the observed data. A prediction of AT-UT1 for the next coming ten years was made based on the theory of Luo Shi-Fang et al., taking seasonal change of the rotation into account. Time measurement systems and precession and nutation of the Earth’s axis of rotation is described in detail in the appendices., 資料番号: NALTR0430000, レポート番号: NAL TR-430},
 title = {衛星運動のシミュレーションシステムにおける世界時の予測},
 year = {1975}
}