loran

简明释义

英[ˈlɔːrən]美[ˈlɔːˌræn;ˈlɑːræn]

n. 远距离无线电导航系统

n. （Loran）人名；（英、西、俄、罗）洛兰

英英释义

单词用法

同义词

反义词

例句

1.Improving and ameliorating the ability of Loran-C for time service are the main objective of our study in this paper.

本论文的主要研究目的是提高和改进罗兰C授时能力。

2.This paper deduces a group of formulas with fast calculating speed and high precision, which can be used in Loran-C navigator for locating calculation.

介绍了罗兰C定位的一种迭代算法，计算速度快、精度高，可用于罗兰C导航仪的定位计算．。

3.The notch filter proposed is used to attenuate the adjacent channel interference in the Loran-C receiver.

本文设计的陷波器用于衰减罗兰C接收机的邻道干扰，而且其调谐是在微机管理下处自动进行的。

4.The relationships between GRI pulse sequences and reference pulses, as well as between modulation code groups and Loran-C pulse groups are analyzed.

分析了GRI脉冲序列与参考脉冲，以及调制码组与罗兰C脉冲组的时间关系。

5.The stability and space correlation about the sky-wave propagation time-delay in Loran-C system are studied.

研究了罗兰-C天波传播时延的稳定性与空间相关性。

6.Using the Multi-chains Loran-C signals to implement the independent UTC synchronization is the second approach, which is relied on the Coincidence Rule among TOCs of different Loran-C chains.

第二条途径是根据不同罗兰c链的TOC的重合规律，研究利用多链罗兰c信号实现自主toc同步。

7.Millington's method is generally used for forecasting the field strength and ASF of Loran C signal.

米林顿算法是国际上比较常用的预测罗兰C信号场强和附加二次相位因子（ASF）的算法。

8.Two tasks showed in the paper, a navigational data-compute program and a man-machine interface of Loran-C receiver is designed.

本文所做的主要工作有两项：一是设计实现坐标转换和航行参数计算的导航数据解算软件，二是设计接收机的人机界面。

9.The time relationships between GRI pulse sequences and reference pulses, as well as between modulation codes and Loran-C pulse groups are analyzed.

分析了GRI脉冲序列与参考脉冲，以及调制码组与罗兰C脉冲组的时间关系。

10.In aviation, loran systems help pilots navigate over long distances.

在航空领域，loran系统帮助飞行员在长距离飞行中导航。

11.Using loran signals, we were able to pinpoint our location accurately.

通过使用loran信号，我们能够准确定位。

12.The ship relied on loran for navigation during the storm.

在暴风雨中，船只依靠loran进行导航。

13.The fisherman used loran to find the best fishing spots.

渔民使用loran寻找最佳捕鱼地点。

14.The military employed loran technology for precise targeting.

军方利用loran技术进行精确打击。

作文

In the realm of navigation, technology has played a crucial role in guiding ships and aircraft across vast distances. One of the significant advancements in this field is the use of loran, which stands for Long Range Navigation. This system, developed during World War II, utilizes low-frequency radio signals to determine a vessel's position. The principle behind loran involves timing the reception of signals from multiple ground stations, allowing navigators to calculate their exact location with remarkable accuracy.The importance of loran cannot be overstated. Before the advent of satellite-based systems, mariners relied heavily on this technology for safe passage through treacherous waters. The reliability of loran made it a preferred choice for many shipping companies, as it provided consistent coverage over large areas. Unlike traditional methods that depended on celestial navigation or visual landmarks, loran offered a more precise way to navigate, especially in poor visibility conditions such as fog or storms.As technology evolved, so did the applications of loran. It was not just limited to maritime navigation; aviation also benefited from this system. Pilots could utilize loran to enhance their situational awareness and ensure they remained on course during flights. The integration of loran into various navigation systems marked a significant leap forward, providing a safety net for both commercial and private pilots.However, the rise of Global Positioning System (GPS) technology gradually overshadowed loran. GPS offered even greater accuracy and global coverage, leading to a decline in the use of loran. Despite this, loran remains an essential part of navigation history. It laid the groundwork for future advancements and demonstrated the potential of radio navigation systems.Interestingly, some regions still utilize loran due to its simplicity and effectiveness. For instance, in areas where GPS signals may be weak or unreliable, loran can serve as a valuable backup system. Additionally, the technology has seen a resurgence in interest as researchers explore ways to integrate loran with modern navigation tools to enhance resilience against potential disruptions.In conclusion, loran has played a pivotal role in the evolution of navigation technology. Its ability to provide accurate positioning information has saved countless lives and facilitated international trade. While it may not be as widely used today due to the dominance of GPS, the legacy of loran continues to influence contemporary navigation systems. Understanding the significance of loran allows us to appreciate the advancements in navigation technology and the journey that has brought us to our current capabilities. As we look to the future, it is essential to remember the foundations laid by systems like loran, which have paved the way for safer and more efficient navigation worldwide.

在导航领域，技术在引导船只和飞机穿越广阔距离方面发挥了至关重要的作用。其中一个重要的进展是使用loran，即长距离导航。该系统在第二次世界大战期间开发，利用低频无线电信号来确定船只的位置。loran的原理涉及接收来自多个地面站的信号时间，从而使导航员能够以惊人的精确度计算出他们的确切位置。loran的重要性不可低估。在卫星导航系统出现之前，海员们在安全通过危险水域时严重依赖这一技术。loran的可靠性使其成为许多航运公司的首选，因为它提供了覆盖大面积的一致性。与依赖天文导航或视觉地标的传统方法不同，loran提供了一种更精确的导航方式，尤其是在能见度差的条件下，例如雾或风暴。随着技术的发展，loran的应用也随之扩展。它不仅限于海洋导航；航空业也受益于这一系统。飞行员可以利用loran来增强他们的态势感知，确保在飞行过程中保持航向。loran与各种导航系统的整合标志着向前迈出的重要一步，为商业和私人飞行员提供了安全保障。然而，全球定位系统（GPS）技术的崛起逐渐掩盖了loran。GPS提供了更大的准确性和全球覆盖范围，导致loran的使用减少。尽管如此，loran仍然是导航历史的重要组成部分。它为未来的进步奠定了基础，并展示了无线电导航系统的潜力。有趣的是，一些地区仍然利用loran，因为它的简单性和有效性。例如，在GPS信号可能较弱或不可靠的地区，loran可以作为一个有价值的备份系统。此外，随着研究人员探索将loran与现代导航工具集成以增强抵御潜在干扰的能力，这项技术也重新引起了兴趣。总之，loran在导航技术的发展中发挥了关键作用。它提供的准确定位信息拯救了无数生命并促进了国际贸易。虽然由于GPS的主导地位，它今天可能不再被广泛使用，但loran的遗产继续影响当代导航系统。理解loran的重要性使我们能够欣赏导航技术的进步以及将我们带到当前能力的旅程。在展望未来时，记住像loran这样的系统所奠定的基础至关重要，这些系统为全球更安全、更高效的导航铺平了道路。