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北九州デッカ・チェンの評価試験-3 : 五島灘東部における定偏差とデッカ位置の精度
http://hdl.handle.net/10069/30772
http://hdl.handle.net/10069/307720a32e3e5-87da-4499-a351-9b34f376e61a
名前 / ファイル | ライセンス | アクション |
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suisan39_017.pdf (368.1 kB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2013-02-21 | |||||
タイトル | ||||||
タイトル | 北九州デッカ・チェンの評価試験-3 : 五島灘東部における定偏差とデッカ位置の精度 | |||||
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 | |||||
著者 |
中根, 重勝
× 中根, 重勝× 合田, 政次× 高木, 保昌 |
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著者別名 | ||||||
姓名 | Nakane, Shigekatsu | |||||
著者別名 | ||||||
姓名 | Goda, Masaji | |||||
著者別名 | ||||||
姓名 | Takaki, Yasuaki | |||||
その他のタイトル | ||||||
その他のタイトル | The Evaluation Test of the Kita-Kyushu Decca Chain―III The Deviation and Precision of Fixes obtained in the Eastern Sea of Goto-Nada | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | In the previous paper, the authors reported on the precision of Decca LOP at the fixed measuring sites in Nagasaki Harbor. In this study, we extended our measuring area to the eastern sea of Goto-Nada (western coast of Nagasaki Prefecture), selecting ten sites. Decometer readings and measurements of ship's position by horizontal sextant angle were conducted at 3 or 4 points in each site in October 1973 and on the bimonthly basis from April to November 1974. Even in this limited area, the deviation of each pattern showed the considerable variation of about 0.1~0.2 lane by site and season, but the seasonal variation was not regular. The pair to obtain the most accurate position differed by site. However, since the angle of intersection of LOP and the Purple Pattern often fluctuated by more than 1.0 lane at night, the Red and Green pair is generally used. The difference of mean fix by the Red and Green pair was about 500m (0.28') in the direction of SW and the radius of the circle of 68% (1σ) confidence interval was about 170m (0.09'). | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 本海域における定偏差は観測点の地理的条件によって0.1~0.2レーンの差があり,その変化傾向もパタンにより一定でない。赤緑の両パタンは+0.1~0.4レーン,紫パタンは±0.1レーンの幅をもつ。最適ペアによるデッカ位置は,ほゞ南西方向に200~500m偏位しているが,本海域で一般的に使用されるR-Gペアによれば南西方向へ約500m(変緯約0.1浬,東西距約0.2浬)偏位し,その68%(1σ)信頼区間は半径約170mの円となる。本システムの誇る高精度の船位を得るためには,更に広範囲の海域における評価を行い,定偏差の把握と補正が不可欠である。 | |||||
書誌情報 |
長崎大学水産学部研究報告 en : Bulletin of the Faculty of Fisheries, Nagasaki University 巻 39, p. 17-23, 発行日 1975-08 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 05471427 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00178473 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
論文ID(NAID) | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | NAID | |||||
関連識別子 | 40002770722 | |||||
出版者 | ||||||
出版者 | 長崎大学水産学部 | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 長崎大学水産学部研究報告, v.39, pp.17-23; 1975 |