dead reckoning navigation

简明释义

推算航法

英英释义

例句

1.Using dead reckoning navigation, the sailor calculated their next waypoint based on speed and time.

水手利用航位推算导航根据速度和时间计算下一个航点。

2.The advent of modern technology has not completely replaced dead reckoning navigation in maritime operations.

现代技术的出现并没有完全取代海事操作中的航位推算导航。

3.The captain relied on dead reckoning navigation to estimate their position while sailing in foggy conditions.

船长依靠航位推算导航在雾霭中估算他们的位置。

4.During the training exercise, the cadets practiced dead reckoning navigation to improve their skills.

在训练演习中，学员们练习了航位推算导航以提高他们的技能。

5.In the absence of GPS, dead reckoning navigation became essential for the pilots during their flight.

在没有GPS的情况下，飞行员在飞行过程中必须依赖航位推算导航。

作文

Dead reckoning navigation is a fundamental technique used by sailors, aviators, and navigators to determine their current position based on a previously determined location. This method relies on the knowledge of speed, time, and direction traveled since the last known position. Although modern technology has introduced advanced navigation systems, understanding the principles of dead reckoning navigation remains crucial for anyone involved in maritime or aerial navigation.The term "dead reckoning" originated from the phrase "deduced reckoning." It involves calculating one's current position by using a combination of the last known position and the course taken since then. For instance, if a ship departs from a harbor and travels at a certain speed for a specific period, the navigator can estimate the new position by factoring in the distance covered and the direction sailed. This estimation is essential, especially when GPS signals are weak or unavailable.One of the main advantages of dead reckoning navigation is its simplicity and independence from electronic devices. In the early days of navigation, sailors relied heavily on this method to traverse vast oceans. They would use compasses to maintain their course and logbooks to record their speed and time. By doing so, they could continuously update their position, even in the absence of landmarks or celestial bodies.However, dead reckoning navigation is not without its challenges. The accuracy of this method can be significantly affected by various factors such as wind, currents, and human error. For example, if a sailor miscalculates their speed or fails to account for a strong current, their estimated position could be off by miles. Therefore, while dead reckoning navigation provides a useful framework for estimating position, it must be used in conjunction with other navigation techniques to ensure accuracy.In modern times, many navigators still employ dead reckoning navigation as a backup method. For instance, pilots may rely on this technique when flying through areas where GPS is unreliable, such as mountainous regions or dense urban environments. Additionally, submarines often utilize dead reckoning navigation to navigate underwater, where GPS signals cannot penetrate.Moreover, understanding dead reckoning navigation enhances a navigator's overall skills. It encourages critical thinking and problem-solving abilities, as navigators must constantly assess their environment and adjust their calculations accordingly. This skill set is invaluable, particularly in emergency situations where technology may fail.In conclusion, dead reckoning navigation is a vital navigation technique that has stood the test of time. While modern advancements have transformed the way we navigate, the principles behind dead reckoning navigation remain relevant. Whether at sea or in the air, knowing how to calculate one’s position using this method can be the key to successful navigation. As we continue to rely on technology, it is essential to remember the foundational skills that have guided explorers for centuries. Understanding dead reckoning navigation not only honors the history of navigation but also prepares us for future challenges in our ever-evolving world.

死算导航是水手、飞行员和导航员用来根据先前确定的位置来确定当前位置的一种基本技术。这种方法依赖于自上一个已知位置以来的速度、时间和方向旅行的知识。尽管现代技术引入了先进的导航系统，但理解死算导航的原理对于任何参与海洋或空中导航的人来说仍然至关重要。“死算”一词源自“推导航法”的短语。它涉及通过使用最后已知位置和自那时起采取的航向的组合来计算当前位置。例如，如果一艘船从港口出发，并以一定的速度在特定时间内航行，导航员可以通过考虑所覆盖的距离和航行方向来估计新位置。这种估计在GPS信号微弱或不可用时尤为重要。死算导航的主要优点之一是其简单性和对电子设备的独立性。在导航的早期阶段，水手们在穿越广阔的海洋时非常依赖这种方法。他们会使用罗盘来保持航向，并记录日志以记录他们的速度和时间。通过这样做，他们可以不断更新自己的位置，即使在没有地标或天体的情况下。然而，死算导航并非没有挑战。这种方法的准确性可能会受到风流、海流和人为错误等各种因素的显著影响。例如，如果水手错误计算了他们的速度或未能考虑强流，他们的估计位置可能会偏离数英里。因此，尽管死算导航提供了一个有用的框架来估计位置，但必须与其他导航技术结合使用，以确保准确性。在现代，许多导航员仍然将死算导航作为备份方法。例如，飞行员可能在飞行经过GPS不可靠的地区（如山区或密集城市环境）时依赖这种技术。此外，潜艇通常利用死算导航在水下导航，因为GPS信号无法穿透水面。此外，理解死算导航增强了导航员的整体技能。它鼓励批判性思维和解决问题的能力，因为导航员必须不断评估他们的环境并相应调整他们的计算。这种技能在技术可能失效的紧急情况下尤其宝贵。总之，死算导航是一种重要的导航技术，经受住了时间的考验。尽管现代进步改变了我们的导航方式，但死算导航背后的原理仍然相关。无论是在海上还是空中，了解如何使用这种方法计算自己的位置都可能是成功导航的关键。随着我们继续依赖技术，记住那些指导探险家几个世纪的基础技能是至关重要的。理解死算导航不仅是对导航历史的尊重，也为我们在不断发展的世界中面对未来的挑战做好准备。