estimated longitude

简明释义

估算经度

英英释义

例句

1.Using satellite data, we calculated the estimated longitude of the missing aircraft.

利用卫星数据，我们计算了失踪飞机的估计经度。

2.The estimated longitude provided by the GPS was off by several degrees due to atmospheric conditions.

由于大气条件，GPS提供的估计经度偏差了几个度。

3.To improve accuracy, we need to refine the estimated longitude based on recent measurements.

为了提高准确性，我们需要根据最近的测量来细化估计经度。

4.The ship's navigation system displayed an estimated longitude of 75.5 degrees west, which is crucial for our route planning.

船只的导航系统显示的估计经度为75.5度西，这对我们的航线规划至关重要。

5.The estimated longitude of the archaeological site suggests it was part of a larger trade network.

考古遗址的估计经度表明它是一个更大贸易网络的一部分。

作文

The concept of estimated longitude plays a crucial role in navigation and geography. Longitude, as we know, is one of the two coordinates (the other being latitude) that define a specific point on the Earth's surface. While latitude measures how far north or south a location is from the equator, longitude measures how far east or west a location is from the Prime Meridian, which is set at 0 degrees longitude. However, determining the exact longitude of a place can sometimes be challenging, especially when using traditional methods. This is where the term estimated longitude comes into play. It refers to an approximate value of longitude that has been calculated based on available data, rather than a precise measurement taken from instruments such as a GPS device.Historically, sailors faced significant challenges in determining their longitude while at sea. The open ocean offered few landmarks, making it difficult to ascertain their position accurately. To address this issue, various methods were developed, including the use of lunar distances and chronometers. Despite these advancements, many navigators still relied on estimated longitude, which could lead to errors and miscalculations. For example, if a sailor estimated their position based on the stars or the sun's position, they might arrive at an estimated longitude that was off by several degrees, potentially leading to disastrous consequences.In modern times, the introduction of Global Positioning System (GPS) technology has revolutionized navigation. GPS devices provide precise measurements of both latitude and longitude, eliminating the need for estimated longitude in most cases. However, there are still situations where an estimated longitude is necessary, such as in remote areas where GPS signals may be weak or unavailable. In these cases, navigators may use maps, charts, and other reference materials to make educated guesses about their position.Moreover, the term estimated longitude can also apply in fields such as cartography and geographic information systems (GIS). When creating maps, cartographers often rely on existing data to estimate the longitudes of various features, particularly in regions where direct measurements are not feasible. This estimation process is crucial for ensuring that maps are accurate and useful for navigation and planning.In conclusion, while advancements in technology have greatly improved our ability to determine exact positions on Earth, the concept of estimated longitude remains relevant in various contexts. Whether it is in maritime navigation, cartography, or even everyday travel, understanding how to estimate longitude can be essential. As we continue to explore our planet and develop new technologies, the importance of knowing how to calculate and interpret estimated longitude will only grow. By appreciating the historical significance and practical applications of this concept, we can enhance our navigation skills and better understand the world around us.

“估计经度”的概念在导航和地理中起着至关重要的作用。经度，顾名思义，是定义地球表面特定点的两个坐标之一（另一个是纬度）。纬度测量某个位置距离赤道的南北距离，而经度则测量某个位置距离本初子午线的东西距离，本初子午线设定为0度经度。然而，确定一个地方的确切经度有时可能会很具挑战性，尤其是在使用传统方法时。这就是“估计经度”这个术语的用武之地。它指的是基于可用数据计算出的经度的近似值，而不是通过GPS设备等仪器获得的精确测量。历史上，航海者在海上确定自己经度面临重大挑战。开阔的海洋几乎没有地标，使得准确确定他们的位置变得困难。为了解决这个问题，开发了各种方法，包括使用月球距离和航海钟。尽管这些进步取得了一定成效，但许多导航员仍然依赖“估计经度”，这可能导致错误和误算。例如，如果一名水手根据星星或太阳的位置来估计他们的位置，他们可能会得出一个偏差几度的“估计经度”，这可能导致灾难性的后果。在现代，全球定位系统（GPS）技术的引入彻底改变了导航。GPS设备提供经度和纬度的精确测量，在大多数情况下消除了对“估计经度”的需求。然而，仍然存在一些情况需要“估计经度”，例如在GPS信号可能微弱或不可用的偏远地区。在这些情况下，导航员可能会使用地图、图表和其他参考材料来对他们的位置做出有根据的猜测。此外，“估计经度”这个术语也适用于制图和地理信息系统（GIS）等领域。在制作地图时，制图师通常依赖现有数据来估计各种特征的经度，特别是在直接测量不可行的地区。这一估算过程对于确保地图的准确性和实用性至关重要。总之，尽管科技的进步极大改善了我们确定地球上确切位置的能力，但“估计经度”这一概念在各种背景下仍然相关。无论是在海上导航、制图，还是日常旅行中，理解如何估算经度都是必不可少的。随着我们继续探索我们的星球并发展新技术，计算和解释“估计经度”的重要性只会增加。通过欣赏这一概念的历史意义和实际应用，我们可以提高我们的导航技能，更好地理解我们周围的世界。