sextant deviation

简明释义

六分仪偏差

英英释义

例句

1.Understanding sextant deviation can help sailors correct their course when navigating through difficult waters.

了解六分仪偏差可以帮助水手在穿越困难水域时修正航向。

2.The sextant deviation was greater than anticipated, leading to a significant change in the planned route.

这次的六分仪偏差比预期的大，导致计划航线发生了重大变化。

3.After calculating the sextant deviation, the crew adjusted their navigation instruments accordingly.

计算完六分仪偏差后，船员们相应地调整了他们的导航仪器。

4.The captain noted the sextant deviation during the navigation check, which is crucial for accurate positioning.

船长在导航检查中注意到了六分仪偏差，这对准确定位至关重要。

5.The training manual included a section on how to measure sextant deviation effectively.

培训手册中包含了一节关于如何有效测量六分仪偏差的内容。

作文

Navigating the vast oceans has always been a challenge for sailors, and one of the most essential tools they have used throughout history is the sextant. This instrument allows navigators to measure the angle between a celestial body and the horizon, which is crucial for determining their position at sea. However, using a sextant is not without its complications, one of which is known as sextant deviation. 天文角度偏差 refers to the errors that can occur due to various factors when taking measurements with a sextant.The concept of sextant deviation is critical for accurate navigation. Sailors must understand that even a small error in measurement can lead to significant discrepancies in their calculated position. This deviation can arise from several sources, including optical misalignments, atmospheric conditions, and even the physical state of the sextant itself. For instance, if the mirrors in the sextant are not perfectly aligned, the angles measured will not reflect the true positions of celestial bodies, leading to erroneous navigation calculations.To mitigate sextant deviation, navigators often perform a series of checks and calibrations before embarking on their journeys. This includes verifying the alignment of the sextant's mirrors and ensuring that the instrument is level. Additionally, sailors may take multiple readings of the same celestial body and average them out to reduce the impact of any individual error. By being diligent in these practices, navigators can significantly enhance the accuracy of their celestial observations and, consequently, their navigation.Another important aspect to consider is the role of sextant deviation in historical maritime exploration. Many famous explorers relied on sextants to traverse uncharted waters and discover new lands. Their ability to navigate accurately was often the difference between success and failure, and understanding the nuances of sextant readings—especially the potential for deviation—was paramount. Errors in navigation could lead to shipwrecks or getting lost at sea, highlighting the importance of mastering the use of the sextant and being aware of its limitations.In modern times, while technology has advanced and GPS systems have become the standard for navigation, the principles behind sextant deviation remain relevant. Even with high-tech instruments, understanding the fundamental concepts of navigation and the potential for error is essential. For those who still practice celestial navigation, such as traditional sailors and maritime enthusiasts, the sextant remains a vital tool, and knowledge of its deviations is crucial for safe and effective navigation.In conclusion, sextant deviation plays a significant role in the realm of navigation. It encapsulates the challenges faced by navigators when relying on this ancient yet invaluable tool. By recognizing the potential for error and taking necessary precautions, sailors can ensure that they remain on course, whether they are exploring the vastness of the ocean or simply enjoying a day out on the water. The lessons learned from understanding sextant deviation continue to inform and enhance the art of navigation, bridging the gap between historical practices and modern techniques.

在广袤的海洋中航行一直是水手们面临的挑战之一，而他们历史上使用的最基本工具之一就是六分仪。这种仪器允许导航员测量天体与地平线之间的角度，这对于确定他们在海上的位置至关重要。然而，使用六分仪并不是没有复杂性，其中一个问题被称为天文角度偏差。sextant deviation指的是在使用六分仪进行测量时，由于各种因素可能发生的误差。天文角度偏差的概念对于准确导航至关重要。水手必须理解，即使是小的测量误差也可能导致他们计算位置的显著差异。这种偏差可能源于多个方面，包括光学不对准、大气条件，甚至六分仪本身的物理状态。例如，如果六分仪的镜子未能完美对齐，测量的角度将无法反映天体的真实位置，从而导致导航计算错误。为了减轻天文角度偏差，导航员通常会在出航前进行一系列检查和校准。这包括验证六分仪镜子的对齐情况，并确保仪器处于水平。此外，水手可能会对同一天体进行多次读数并取平均值，以减少任何单个误差的影响。通过在这些实践中保持谨慎，导航员可以显著提高他们天文观测的准确性，从而提高导航的可靠性。另一个重要的方面是天文角度偏差在历史海洋探索中的作用。许多著名的探险家依赖六分仪穿越未知水域，发现新土地。他们准确导航的能力往往是成功与失败之间的区别，而理解六分仪读数的细微差别，尤其是偏差的潜力，是至关重要的。导航错误可能导致船只失事或在海上迷失方向，这突显了掌握六分仪的使用以及意识到其局限性的重要性。在现代，虽然技术已经进步，GPS系统已成为导航的标准，但天文角度偏差背后的原则仍然适用。即使是高科技仪器，理解导航的基本概念及其潜在误差也是至关重要的。对于那些仍然实践天文导航的人，例如传统水手和海事爱好者来说，六分仪仍然是一个重要的工具，而了解其偏差是安全有效导航的关键。总之，天文角度偏差在导航领域中扮演着重要角色。它概括了导航员在依赖这一古老而宝贵的工具时所面临的挑战。通过认识到误差的潜在性并采取必要的预防措施，水手可以确保他们保持在航线上，无论他们是在探索浩瀚的海洋还是仅仅享受一天的水上活动。从理解天文角度偏差中获得的教训继续为导航艺术提供信息和增强，弥合了历史实践与现代技术之间的差距。