circle of position

简明释义

船位圈

英英释义

例句

1.The circle of position helps sailors avoid hazards by providing a safe radius around their coordinates.

这个位置圈通过提供坐标周围的安全半径，帮助水手避免危险。

2.The surveyor marked a circle of position on the map to indicate the area of interest.

测量员在地图上标记了一个位置圈以指示感兴趣的区域。

3.Using a GPS device, you can visualize a circle of position around your current location.

使用GPS设备，你可以在当前位置周围可视化一个位置圈。

4.In aviation, pilots often refer to a circle of position when calculating their flight path.

在航空中，飞行员在计算航线时经常提到位置圈。

5.The navigator used the circle of position to determine their exact location at sea.

导航员使用位置圈来确定他们在海上的确切位置。

作文

In the realm of navigation and geography, the term circle of position refers to a concept that is crucial for determining one's location on the Earth's surface. It is defined as a circle on the Earth's surface where all points have the same angular distance from a specific reference point, usually a celestial body. This concept plays an essential role in various fields, including aviation, maritime navigation, and even in modern-day GPS technology.To understand the importance of the circle of position, we must first delve into how navigators historically used celestial bodies to find their way. Before the advent of sophisticated technology, sailors relied heavily on the stars to guide them across vast oceans. By measuring the angle between a star and the horizon, they could determine their latitude. However, knowing one's latitude alone was not sufficient for precise navigation; it was also necessary to ascertain longitude, which is where the circle of position comes into play.The circle of position is essentially the locus of points that share the same angular distance from a known celestial object. For instance, if a navigator observes a star and measures its angle at a specific time, they can draw a circle around the point on the Earth where they believe they are located. This circle indicates all the possible locations where the navigator could be, given the measured angle. The intersection of multiple circles of position from different celestial observations allows for a much more accurate determination of one’s exact position.In modern navigation, the principles behind the circle of position still hold true but have been enhanced by technology. GPS systems utilize satellites that send signals to receivers on Earth. Each signal provides information about the distance from the satellite, which can be visualized as a circle of position. When multiple satellites are involved, the intersections of these circles allow for precise triangulation of a user's location.Moreover, the circle of position concept is also applicable in various scientific fields. For example, in geolocation services, understanding the circle of position can enhance the accuracy of location-based services, such as mapping applications or emergency response systems. By calculating the circle of position based on available data points, these services can provide users with reliable information about their surroundings.In conclusion, the circle of position is a fundamental concept that has evolved from its traditional use in celestial navigation to its current applications in modern technology. Whether it’s for sailors navigating the open seas or individuals using smartphones to find their way in urban environments, the circle of position remains a vital tool for understanding and determining location. As technology continues to advance, the principles behind this concept will undoubtedly continue to shape the future of navigation and geolocation.

在导航和地理学领域，术语位置圈指的是一个概念，对于确定人们在地球表面的位置至关重要。它被定义为地球表面上的一个圆，其中所有点与特定参考点（通常是天体）具有相同的角距离。这个概念在航空、海洋导航甚至现代GPS技术等各个领域中都发挥着重要作用。要理解位置圈的重要性，我们首先必须深入了解导航员如何历史上利用天体找到方向。在先进技术出现之前，水手们在广阔的海洋中主要依靠星星来指引他们的航行。通过测量一颗星星与地平线之间的角度，他们可以确定自己的纬度。然而，仅仅知道纬度并不足以进行精确导航；还需要确定经度，而这正是位置圈发挥作用的地方。位置圈本质上是与已知天体共享相同角距离的点的轨迹。例如，如果导航员观察一颗星星并在特定时间测量其角度，他们可以在地球上绘制出一个圆，表示他们认为自己可能位于的位置。这个圆表明了导航员可能所在的所有位置，因为测量的角度。通过从不同的天体观测中绘制多个位置圈的交集，可以更准确地确定自己的确切位置。在现代导航中，位置圈背后的原理仍然成立，但已经通过技术得到了增强。GPS系统利用卫星向地球上的接收器发送信号。每个信号提供有关与卫星距离的信息，这可以被可视化为一个位置圈。当涉及多个卫星时，这些圆的交集允许精确三角测量用户的位置。此外，位置圈概念在各种科学领域也适用。例如，在地理定位服务中，理解位置圈可以提高基于位置的服务的准确性，如地图应用程序或紧急响应系统。通过根据可用数据点计算位置圈，这些服务能够为用户提供可靠的周围环境信息。总之，位置圈是一个基本概念，从其在天体导航中的传统使用演变到现代技术中的应用。无论是水手在开放海域航行，还是个人使用智能手机在城市环境中寻找方向，位置圈仍然是理解和确定位置的重要工具。随着技术的不断进步，这个概念背后的原理无疑将继续塑造导航和地理定位的未来。