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学生群の天測精度について (2) 午前の観測における天測技量の上達過程
https://fra.repo.nii.ac.jp/records/2011443
https://fra.repo.nii.ac.jp/records/2011443fd400be9-c2ce-4ee0-85e7-1c67bbe3980c
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2024-10-11 | |||||
| タイトル | ||||||
| タイトル | 学生群の天測精度について (2) 午前の観測における天測技量の上達過程 | |||||
| 言語 | ja | |||||
| タイトル | ||||||
| タイトル | On the accuracy in astronomical observation by the cadet groups - 2 Process of gaining skill in the ante-meridian altitude obserbations during training cruise | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 著者 |
内田, 和良
× 内田, 和良× 深田, 耕一× 浜口, 正人 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The previous paper examined into process of cadets gaining skill in the meridian altitude observation. The present report aimed at showing quantitatively the same process in the ante-meridian altitude observation that is another important element for astronomical position fixing and at showing consequence of both observations, one being meridian altitude during slow change of altitude but intense change of azimuth, and vice versa in the ante-meridian observation. To express the process of the ante-meridian altitude observation, the equation II (y = ae-bx) was more suitable than the equation 1 (y = ax-b) where y is the standard error and x is the number of observations trained. The number of observations of necessity for training differed according to performance of telescope of sextant, 15 for the telescope of 4x40x6° and 10 for the telescope of 7x 35 x6.7° under the setting that the applicable level was 1 mile in standard error. The difficulty in altitude observation by cadet could be arranged as follows : (1) The meridian altitude of higher than 87°. (2) The ante-meridian and the meridian altitude of lower than 83°. (3) The meridian altitude of lower than 75°. After the cadets trained into the applicable level, accidental error did not show any difference between the ante-meridian (0.855') and the meridian (0.849') altitude observation, but the cadets inclined to estimate the altitude higher than the values estimated by officer in both observations, and personal error of the ante-meridian altitude observation was smaller than that of the meridian altitude observation. And cadets were trained into the level of navigator (i.e. 0.74 miles in standard error) after 16 observations. | |||||
| 言語 | en | |||||
| 書誌情報 |
ja : 水産大学校研究報告 en : The Journal of the Shimonoseki University of Fisheries 巻 29, 号 1, p. 91-101, ページ数 11, 発行日 1980-10 |
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| 出版者 | ||||||
| 出版者 | 水産大学校 | |||||
| 言語 | ja | |||||
| 出版者 | ||||||
| 出版者 | the Shimonoseki University of Fisheries | |||||
| 言語 | en | |||||
| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 0370-9361 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00124678 | |||||
| 情報源 | ||||||
| 識別子タイプ | Local | |||||
| 関連識別子 | fishu_k_29_91 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://agriknowledge.affrc.go.jp/RN/2010232891 | |||||
| 言語 | ja | |||||
| 関連名称 | 日本農学文献記事索引(agriknowledge) | |||||
