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長崎丸の方向探知機の誤差について


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Title: 長崎丸の方向探知機の誤差について
Other Titles: On the Error of the Direction Finder in the "Nagasaki-Maru"
Authors: 梅園, 茂
Authors (alternative): Umezono, Shigeru
Issue Date: Aug-1968
Publisher: 長崎大学水産学部
Citation: 長崎大学水産学部研究報告, v.25, pp.89-94; 1968
Abstract: In order to make a perfect determination of direction with a direction finder, it has been believed to be desirable to set the loop antenna at the high position and as far from metallic substances on the ship as possible. In the "Nagasaki-Maru", however, the parabola antenna of the rader has been fixed close to and between the mast and the loop antenna for the convenience of fixing position. With this loop antenna was performed error determination, and the results and the discussion on them have been herein reported. 1) When the parabola antenna was set closer to the loop antenna, the error was increased on the 20 MC band. 2) On the beacon band, no error was yielded both before and after the remodeling. 3) In the small-or medium-sized fishing boat, where high frequency is used, the loop antenna needs to be fixed with special attention. / 1)ループアンテナに接近してパラボラアンテナを設置すれば,2MC帯で誤差が増大する. 2)ビーコン周波数では改装前後共誤差は全々生じない. 3)小,中形漁船においては使用周波数が高いので,特にループアンテナの取り付けに注意すべきである.
URI: http://hdl.handle.net/10069/31352
ISSN: 05471427
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:第25号

Citable URI : http://hdl.handle.net/10069/31352

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