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來源資料
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題名 | 納歐(NAO)測天表符號判別之研究=Appliance and Sign Decision of NAO Sight Reduction Able |
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作者 | 王一三; Wang, Yi-sang; |
期刊 | 國立高雄海院學報 |
出版日期 | 20011200 |
卷期 | 16 2001.12[民90.12] |
頁次 | 頁13-27 |
分類號 | 444.9 |
語文 | chi |
關鍵詞 | 測天表; 航海曆; 天文航海; Sight reduction table; The nautical almanac; Celestial navigation; |
中文摘要 | 「納歐測天計算表」(NAO Sight Reduction Table)是一份附在航海曆(The Nautical Almanac)後面的天體高度方位計算表,由於它只有少少幾十頁的特性,是 船上最方便的天體計算表之一。當船舶遇難時,非常適合在救生艇上配合六分儀、 天文鐘及海圖使用,利用觀測的天體高度決定船位。只是它在查表手續上較為繁複, 且在計算時需注意依規則判定所查各值的正負號。在納歐測天計算表的表頭及表尾 均列出各項數值如何選擇正負號,但未有解說及繪圖解析。 本研究除了詳加說明如何查表外,尚試圖還原各項規則正、負符號的來源,以 徹底瞭解該表的設計,以方便航海員正確使用。 |
英文摘要 | The NAO Sight Reduction Table is attached at the end of the annual Nautical Almanac. It is the most convenient sight reduction table on board because it only contains less than 30 pages. It is easy to carry on board lifeboat in distress. With sextant, chronometer and charts, the lifeboat's position can be correctly determined by celestial navigation technique. Although the position is not as accurate as obtained from GPS or other electronic equipments, it is good enough for search and rescue purpose. In the heads and ends of correction table in the NAO Sight Reduction Table, there are information about the sign (plus or minus) of correction 1 or correction 2. But no further detailed explanation and drawing analysis are shown on the table. This study tries to show the appliance of the NAO Sight Reduction Table and also examine the original drawing and theory for the table. When mariners understand the drawing and theory, they are able to check the talbe and calculation without difficulties. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。