dead reckoning longitude

简明释义

推算经度

英英释义

例句

1.The ship's log recorded the dead reckoning longitude every hour as part of its navigation routine.

船只日志每小时记录一次航程推算经度，作为导航例行程序的一部分。

2.Using dead reckoning longitude, the navigator was able to estimate their position accurately during the storm.

利用航程推算经度，导航员在暴风雨中能够准确估计他们的位置。

3.The advent of modern technology has made dead reckoning longitude calculations less common, but they are still taught in navigation courses.

现代技术的出现使得航程推算经度的计算变得不那么常见，但它们仍然在导航课程中教授。

4.In aviation, pilots often rely on dead reckoning longitude when GPS signals are weak.

在航空中，当GPS信号较弱时，飞行员通常依赖航程推算经度。

5.The captain calculated the dead reckoning longitude to ensure they were on course.

船长计算了航程推算经度以确保他们在航线上。

作文

In the realm of navigation, especially during the age of exploration, the term dead reckoning longitude holds significant importance. This method of navigation involves calculating one's current position by using a previously determined position and advancing that position based on known or estimated speeds over elapsed time. The concept of dead reckoning longitude is particularly fascinating as it combines both mathematics and the art of navigation, allowing sailors and explorers to traverse vast oceans with a degree of accuracy that was unprecedented at the time.Historically, dead reckoning longitude was crucial for maritime navigation before the advent of modern technologies such as GPS. Navigators would begin their journey from a known point, often marked on a map or chart, and then estimate their new position based on their heading and speed. This process involved meticulous calculations and a keen understanding of the elements affecting their journey, such as wind and currents. The reliance on dead reckoning longitude meant that navigators had to be skilled in mathematics and possess a deep knowledge of their vessel's capabilities.One of the primary challenges of dead reckoning longitude is the accumulation of errors over time. As navigators relied on estimates for speed and direction, any small mistake could lead to significant discrepancies in their actual position. For example, if a sailor underestimated the speed of their ship or miscalculated the angle of their course, they could end up miles away from their intended destination. This potential for error highlights the importance of constant vigilance and adjustment during long voyages.Despite its limitations, dead reckoning longitude was a revolutionary technique that allowed explorers to navigate uncharted waters. It enabled them to venture into the unknown, discovering new lands and establishing trade routes that would shape the world. The success of famous explorers like Christopher Columbus and Ferdinand Magellan can be attributed, in part, to their mastery of dead reckoning longitude techniques.In contemporary times, while we have advanced navigation systems at our disposal, the principles of dead reckoning longitude are still relevant. Modern navigation systems often incorporate dead reckoning algorithms to provide accurate positioning, especially when satellite signals are weak or unavailable. This demonstrates that even with technological advancements, the fundamental concepts of navigation remain rooted in the practices developed centuries ago.Moreover, understanding dead reckoning longitude serves as a reminder of the ingenuity and resourcefulness of early navigators. Their ability to traverse vast oceans without modern tools exemplifies human determination and the quest for discovery. It also highlights the importance of learning from history, as the challenges faced by early navigators continue to inform our current practices in navigation and exploration.In conclusion, the term dead reckoning longitude encapsulates a vital aspect of navigation history. It reflects the blend of science, art, and adventure that characterized the age of exploration. By studying this concept, we gain insight into the skills and knowledge that early navigators possessed, as well as an appreciation for the advancements that have shaped our modern understanding of navigation. As we continue to explore the world around us, the legacy of dead reckoning longitude reminds us of the enduring spirit of exploration and the importance of precision in our journeys.

在导航领域，尤其是在探索时代，术语dead reckoning longitude具有重要意义。这种导航方法涉及通过使用先前确定的位置，并根据已知或估计的速度和经过的时间推进该位置来计算当前的位置。dead reckoning longitude的概念特别引人入胜，因为它结合了数学和导航艺术，使水手和探险家能够以前所未有的准确度横渡广阔的海洋。历史上，dead reckoning longitude对于现代技术（如GPS）出现之前的海洋导航至关重要。导航员会从一个已知点开始他们的旅程，通常在地图或图表上标记，然后根据他们的航向和速度估算他们的新位置。这个过程涉及细致的计算和对影响他们旅程的因素（如风和洋流）的深入了解。依赖于dead reckoning longitude意味着导航员必须精通数学，并对他们船只的能力有深刻的了解。dead reckoning longitude的主要挑战之一是随着时间的推移错误的积累。由于导航员依赖于速度和方向的估计，任何小错误都可能导致他们实际位置的重大差异。例如，如果水手低估了船速或错误地计算了航向角，他们可能会偏离数英里，远离预定目的地。这种潜在的错误强调了在长途航行期间保持警惕和调整的重要性。尽管有其局限性，dead reckoning longitude是一种革命性的技术，使探险家能够在未知水域中航行。它使他们能够进入未知领域，发现新土地并建立塑造世界的贸易路线。著名探险家如克里斯托弗·哥伦布和费迪南德·麦哲伦的成功在某种程度上可以归因于他们对dead reckoning longitude技术的掌握。在当代，虽然我们有先进的导航系统可供使用，但dead reckoning longitude的原则仍然相关。现代导航系统通常结合死算算法，以提供准确的定位，尤其是在卫星信号微弱或不可用的情况下。这表明，即使在技术进步的情况下，导航的基本概念仍根植于几个世纪前发展起来的实践中。此外，理解dead reckoning longitude提醒我们早期导航员的聪明才智和足智多谋。他们能够在没有现代工具的情况下横渡广阔的海洋，体现了人类的决心和探索的追求。这也突显了从历史中学习的重要性，因为早期导航员面临的挑战继续影响我们当前的导航和探索实践。总之，术语dead reckoning longitude概括了导航历史中的一个重要方面。它反映了科学、艺术和冒险的融合，这一特征在探索时代中尤为明显。通过研究这一概念，我们不仅获得了对早期导航员技能和知识的洞察，还对塑造我们现代导航理解的进步表示赞赏。当我们继续探索周围的世界时，dead reckoning longitude的遗产提醒我们探索精神的持久性以及在我们的旅程中精确性的重要性。