Compass adjustment by GPS (or any other GNSS receiver) and a single visual reference

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-08-01 DOI:10.1017/s0373463323000176

Jorge Moncunill Marimon, Francisco Javier Martínez de Osés, Rafael Cabal Álvarez

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引用次数: 0

Abstract

This paper proposes a proper compass adjustment method using only a GPS (or any other GNSS receiver) and a single visual reference to enhance the efficiency of compass adjustment. During compass adjustment, the ship proceeds on magnetic courses using a gyroscopic or satellite compass and considering magnetic declination. However, non-magnetic compasses are only compulsory for ships of 500 gross tonnage or upwards (SOLAS V/19.2.5.1). Many ships of less than 500 gross tonnage have only a magnetic compass to indicate heading. In these cases, a minimum of five leading lines or a minimum of five bearings of conspicuous and distant points or sun azimuths are necessary to adjust the compass. This makes compass adjustment more laborious and time consuming. To expedite this process, a reliable and practical method was developed to use the courses over ground given by a GNSS receiver and a single visual reference instead of the headings provided by a gyroscopic or satellite compass. The method is valid for all ships, but is primarily intended for those equipped with only a magnetic compass to indicate heading.

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通过GPS(或任何其他GNSS接收器)和单一视觉参考调整指南针

本文提出了一种仅使用GPS（或任何其他GNSS接收器）和单个视觉参考的适当罗盘调整方法，以提高罗盘调整的效率。在罗盘调整过程中，船舶使用陀螺仪或卫星罗盘并考虑磁偏角，沿磁航向前进。然而，只有500总吨位或以上的船舶才必须使用非磁性罗盘（SOLAS V/19.22.5.1）。许多500总吨位以下的船舶只有一个磁性罗盘来指示航向。在这些情况下，调整指南针需要至少五条引导线或至少五个明显和遥远点或太阳方位角的方位。这使得指南针的调整更加费力和耗时。为了加快这一进程，开发了一种可靠而实用的方法，使用全球导航卫星系统接收器提供的地面航向和单一视觉参考，而不是陀螺仪或卫星罗盘提供的航向。该方法适用于所有船只，但主要适用于那些只配备磁罗盘来指示航向的船只。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.