astronomical position line

简明释义

天文船位线

英英释义

例句

1.In celestial navigation, the astronomical position line is crucial for fixing a vessel's position relative to the stars.

在天文导航中，天文位置线对于确定船只相对于星星的位置至关重要。

2.The captain referred to the astronomical position line to confirm their coordinates during the night.

船长在夜间参考天文位置线确认他们的坐标。

3.The astronomical position line can be derived from observations of celestial bodies such as the sun and stars.

天文位置线可以通过观察太阳和星星等天体得出。

4.Using a sextant, the sailor calculated the astronomical position line to find their latitude.

水手使用六分仪计算天文位置线以找到他们的纬度。

5.The navigator plotted the ship's course using the astronomical position line, which helped determine its location at sea.

导航员使用天文位置线绘制船只航线，这有助于确定其在海上的位置。

作文

The concept of an astronomical position line is crucial in the field of navigation and astronomy. An astronomical position line is essentially a line that represents all points on the Earth's surface where an observer would see celestial bodies, such as stars or planets, at a specific angle above the horizon at a given time. This concept is fundamental for sailors and aviators who rely on celestial navigation to determine their position on the globe. By understanding how to read and interpret an astronomical position line, navigators can accurately plot their course across vast oceans or through the skies.In practice, the use of an astronomical position line involves several steps. First, a navigator must identify a celestial body that is easily observable. This could be a bright star, the moon, or even a planet. Once the celestial body is identified, the navigator measures the angle of elevation from the horizon to the body using a sextant or similar instrument. This angle, when plotted against the time of observation, allows the navigator to draw an astronomical position line on a chart.The intersection of this line with other known position lines can help pinpoint the navigator’s exact location. This method of triangulation is essential, especially when navigating in areas where landmarks are scarce or nonexistent. The accuracy of an astronomical position line can greatly affect the safety and efficiency of travel, making it a vital skill for those in maritime and aerial professions.Moreover, the significance of an astronomical position line extends beyond practical navigation. It also serves as a reminder of humanity's connection to the cosmos. The ability to measure and understand our position relative to celestial bodies has been a source of wonder and exploration throughout history. Ancient civilizations used similar concepts to build monumental structures aligned with the stars, showcasing the deep-rooted relationship between astronomy and culture.In modern times, while technological advancements such as GPS have revolutionized navigation, the principles behind an astronomical position line remain relevant. Understanding celestial navigation can serve as a backup for electronic systems, which may fail due to various reasons, including technical malfunctions or signal loss. Therefore, education in traditional navigation methods is still important for pilots and mariners.In conclusion, the astronomical position line is more than just a navigational tool; it embodies the intersection of science, technology, and human curiosity. As we continue to explore our world and beyond, the principles surrounding an astronomical position line remind us of the importance of understanding our place in the universe. Whether one is sailing the seas or flying high above the clouds, the knowledge of how to use an astronomical position line can be invaluable, ensuring safe travels and a deeper appreciation of the night sky.

“天文位置线”这一概念在导航和天文学领域至关重要。天文位置线本质上是一条线，代表地球表面所有点，在特定时间，观察者会在地平线上看到天体，如星星或行星，处于特定的角度。这个概念对依赖天体导航确定其在地球上位置的水手和飞行员来说是基础。通过理解如何读取和解释天文位置线，导航者可以准确地在广阔的海洋或天空中绘制他们的航线。在实践中，使用天文位置线涉及几个步骤。首先，导航者必须识别出一个易于观察的天体。这可能是明亮的星星、月亮，甚至是行星。一旦识别出天体，导航者就会使用六分仪或类似仪器测量从地平线到天体的仰角。这个角度在观察时间上进行绘图，可以帮助导航者在图表上绘制一条天文位置线。这条线与其他已知位置线的交点可以帮助确定导航者的确切位置。这种三角测量的方法是必不可少的，特别是在导航区域缺乏地标或没有地标的情况下。天文位置线的准确性可以极大地影响旅行的安全性和效率，使其成为海洋和航空专业人员的重要技能。此外，天文位置线的重要性不仅限于实际导航。它还提醒人类与宇宙的联系。测量和理解我们相对于天体的位置的能力，一直是历史上探索和惊奇的源泉。古代文明使用类似的概念建造与星星对齐的纪念性建筑，展示了天文学与文化之间深厚的关系。在现代，尽管GPS等技术进步已经彻底改变了导航方式，但天文位置线背后的原则仍然相关。理解天体导航可以作为电子系统的备份，因为这些系统可能由于各种原因而失效，包括技术故障或信号丢失。因此，传统导航方法的教育对飞行员和水手仍然很重要。总之，天文位置线不仅仅是一个导航工具；它体现了科学、技术与人类好奇心的交汇。随着我们继续探索我们的世界和宇宙，围绕天文位置线的原则提醒我们理解我们在宇宙中的位置的重要性。无论是在海上航行还是在高空飞行，了解如何使用天文位置线都是无价的，确保安全旅行并更深入地欣赏夜空。