计时器误差不确定度对沙克尔顿船经度的影响

IF 1.9 4区工程技术 Q2 ENGINEERING, MARINE Journal of Navigation Pub Date : 2022-11-01 DOI:10.1017/S0373463322000649

L. Bergman, D. Mearns, R. Stuart

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引用次数: 0

摘要

1915年，当帝国横贯南极探险队的船耐力号被冰封在威德尔海时，进行了月球掩星计时，以便对计时器进行评分，从而找到经度。利用现代月球星历表和恒星位置目录重新分析了最初的观测结果。用这种方法得出的时间与在航海年鉴中给出的位置所得到的时间平均相差20秒，并且在日志中记录的真实位置以东引入了额外的偏移量。

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Influence of chronometer error uncertainties on the Longitude of Shackleton's vessel, Endurance

Abstract In 1915 while the Imperial Trans-Antarctic Expedition's vessel Endurance was icebound in the Weddell Sea, lunar occultation timings were carried out in order to rate the chronometers and thereby find longitude. The original observations have been re-analysed using modern lunar ephemerides and catalogues of star positions. The times derived in this way are found to differ by an average of 20 s from those obtained during the expedition using positions given from the Nautical Almanac and introduces an additional offset of the true positions to the east of those recorded in the log.

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来源期刊

Journal of Navigation 工程技术-工程：海洋

CiteScore

6.10

自引率

4.20%

发文量

审稿时长

4.6 months

期刊介绍： The Journal of Navigation contains original papers on the science of navigation by man and animals over land and sea and through air and space, including a selection of papers presented at meetings of the Institute and other organisations associated with navigation. Papers cover every aspect of navigation, from the highly technical to the descriptive and historical. Subjects include electronics, astronomy, mathematics, cartography, command and control, psychology and zoology, operational research, risk analysis, theoretical physics, operation in hostile environments, instrumentation, ergonomics, financial planning and law. The journal also publishes selected papers and reports from the Institute’s special interest groups. Contributions come from all parts of the world.