line of position

简明释义

位置线

英英释义

例句

1.The captain instructed the crew to mark the line of position for better navigation.

船长指示船员标记位置线以便更好地导航。

2.Using a sextant, she was able to establish a line of position based on the sun's angle.

利用六分仪，她能够根据太阳的角度建立一条位置线。

3.The navigator plotted the line of position on the chart to determine their current location.

导航员在图表上绘制了位置线以确定他们的当前位置。

4.The line of position helps in triangulating the vessel's position on the map.

位置线有助于在地图上三角测量船只的位置。

5.After taking several sightings, we drew the line of position to confirm our coordinates.

在进行几次观测后，我们绘制了位置线以确认我们的坐标。

作文

In the field of navigation, the concept of a line of position is crucial for determining one's location on the Earth's surface. A line of position refers to a line that indicates all the possible positions of a vessel or an aircraft at a given time based on navigational data. This can be derived from celestial navigation, where the angles between celestial bodies and the horizon are measured, or from other navigational methods such as GPS. Understanding how to interpret a line of position is essential for mariners and pilots alike, as it allows them to establish their current location accurately and make informed decisions regarding their routes.The significance of a line of position becomes even more apparent when considering the vastness of the ocean or the sky. Without accurate positioning, vessels risk becoming lost or colliding with other objects. For instance, if a ship is navigating through a dense fog, it might rely on a line of position derived from radar data or soundings to ensure it remains on course. Similarly, aviators use various instruments to compute a line of position, which helps them maintain safe altitudes and avoid obstacles.In practical terms, creating a line of position involves taking multiple measurements and plotting them on a chart. For example, a navigator might take a sighting of a star and use the sextant to determine its angle above the horizon. This angle can then be used to draw a line of position on a nautical chart, indicating where the ship could be located based on that celestial observation. The intersection of multiple lines of position provides a more accurate fix on the vessel's location, allowing for safer navigation.Moreover, the advent of technology has transformed how lines of position are determined. Modern navigational systems utilize satellite data, which provides real-time positioning information. However, understanding traditional methods of establishing a line of position remains vital, especially in situations where technology may fail or when navigating in remote areas where signals may be weak.In summary, the line of position is a fundamental concept in navigation that serves as a guide for determining one’s location. Whether at sea or in the air, the ability to establish a line of position can mean the difference between a safe journey and a disastrous one. As navigational methods continue to evolve, the principles behind the line of position remain relevant, emphasizing the importance of both traditional skills and modern technology in ensuring safe travel.

在航海领域，位置线的概念对于确定一个人在地球表面的位置至关重要。位置线是指一条线，表示在特定时间内，根据导航数据，船只或飞机可能的位置。这可以通过天文导航得出，在这种情况下，测量天体与地平线之间的角度，或者通过其他导航方法，如GPS。理解如何解释位置线对水手和飞行员来说都是必不可少的，因为它使他们能够准确地确定自己当前的位置，并就航线作出明智的决策。位置线的重要性在考虑广阔的海洋或天空时变得更加明显。如果没有准确的定位，船只有可能迷失方向或与其他物体相撞。例如，如果一艘船在浓雾中航行，它可能依赖于来自雷达数据或声纳的位置线来确保其保持航向。同样，飞行员使用各种仪器来计算位置线，这帮助他们保持安全的高度并避免障碍物。在实际操作中，创建位置线涉及多次测量并将其绘制在图表上。例如，一名导航员可能会观察一颗星星，并使用六分仪确定其在地平线上的角度。然后，可以利用这个角度在海图上绘制一条位置线，指示根据该天文观测，船只可能位于何处。多条位置线的交点提供了更准确的船只位置，允许更安全的导航。此外，科技的进步改变了位置线的确定方式。现代导航系统利用卫星数据，提供实时定位信息。然而，理解传统的建立位置线的方法仍然至关重要，尤其是在技术可能失效的情况下，或在信号可能较弱的偏远地区进行导航时。总之，位置线是导航中的基本概念，作为确定位置的指南。无论是在海上还是在空中，建立位置线的能力都可能意味着安全旅行与灾难之间的区别。随着导航方法的不断发展，位置线背后的原则仍然相关，强调了传统技能和现代技术在确保安全旅行中的重要性。