very high frequency direction finder

简明释义

甚高频测向仪

英英释义

例句

1.The pilot used the very high frequency direction finder to locate the nearest airport during low visibility.

在能见度低的情况下，飞行员使用了超高频方向探测器来找到最近的机场。

2.During the search and rescue operation, the team relied on a very high frequency direction finder to track the distress signal.

在搜寻和救援行动中，团队依靠超高频方向探测器来追踪求救信号。

3.Maritime vessels are equipped with a very high frequency direction finder to enhance navigation safety.

海洋船只配备了超高频方向探测器以提高导航安全性。

4.To improve communication, the radio station upgraded its very high frequency direction finder system.

为了改善通信，广播电台升级了其超高频方向探测器系统。

5.The very high frequency direction finder is crucial for air traffic controllers to manage flight paths effectively.

对于空中交通管制员来说，超高频方向探测器对有效管理航线至关重要。

作文

In the field of navigation and communication, technology plays a crucial role in ensuring safety and efficiency. One of the essential tools used in this domain is the very high frequency direction finder, which is often abbreviated as VHFDF. This device is particularly important for maritime and aviation operations, where accurate positioning and communication are vital. The very high frequency direction finder allows users to determine the direction of a radio signal, which can be critical in locating vessels or aircraft in distress or tracking their movements. The very high frequency direction finder operates by receiving signals transmitted at very high frequencies, typically between 30 MHz and 300 MHz. These frequencies are ideal for line-of-sight communication, making them suitable for short-range navigation. When a signal is received, the device analyzes the phase and amplitude of the incoming radio waves to compute the direction from which they originated. This capability enables operators to pinpoint the location of a transmitter with remarkable accuracy.One of the primary applications of the very high frequency direction finder is in search and rescue operations. For instance, when an aircraft experiences an emergency, it may transmit a distress signal. The very high frequency direction finder can quickly identify the direction of this signal, allowing rescue teams to narrow down their search area and respond more effectively. Similarly, in maritime contexts, vessels in trouble can use this technology to communicate their position to nearby ships or coastal stations, facilitating timely assistance.Moreover, the very high frequency direction finder is not only limited to emergency situations. It is also widely used in routine navigation. Ships and airplanes can utilize this technology to maintain their course and avoid potential hazards. By continuously monitoring radio signals from various sources, operators can ensure that they are on the right track and make necessary adjustments to their routes. This proactive approach significantly enhances safety during travel.The advancements in technology have further improved the functionality of the very high frequency direction finder. Modern devices are equipped with digital processing capabilities, allowing for faster and more accurate direction finding. Additionally, many contemporary systems can integrate with other navigation tools, such as GPS, providing users with a comprehensive understanding of their surroundings. This integration is particularly beneficial in complex environments where multiple signals may be present.Despite its advantages, the use of the very high frequency direction finder does come with challenges. For example, the effectiveness of the device can be influenced by environmental factors such as terrain, weather conditions, and obstacles like buildings or mountains. Operators must be aware of these limitations and use the device as part of a broader navigation strategy that includes other technologies and methods.In conclusion, the very high frequency direction finder is an invaluable tool in the fields of navigation and communication. Its ability to accurately determine the direction of radio signals makes it essential for search and rescue operations, routine navigation, and overall safety in maritime and aviation contexts. As technology continues to evolve, the very high frequency direction finder will likely become even more sophisticated, further enhancing its utility and effectiveness in ensuring safe travel across the globe.

在导航和通信领域，技术在确保安全和效率方面发挥着至关重要的作用。其中一个在这一领域中使用的重要工具是超高频方向探测器，通常缩写为VHFDF。该设备对于海上和航空操作尤为重要，因为准确的定位和通信至关重要。超高频方向探测器允许用户确定无线电信号的方向，这在寻找遇险船只或飞机或跟踪它们的运动时至关重要。超高频方向探测器通过接收在超高频（通常在30 MHz到300 MHz之间）下发射的信号来工作。这些频率非常适合视距通信，使其适合短距离导航。当信号被接收时，设备分析传入无线电波的相位和幅度，以计算信号来源的方向。这一能力使操作员能够以惊人的准确性确定发射器的位置。超高频方向探测器的主要应用之一是在搜救操作中。例如，当飞机遇到紧急情况时，它可能会发出求救信号。超高频方向探测器可以快速识别该信号的方向，从而使救援团队能够缩小搜索区域，更有效地响应。同样，在海洋环境中，遇险的船只可以利用此技术向附近的船只或沿海站点传达其位置信息，从而促进及时的援助。此外，超高频方向探测器不仅限于紧急情况。它还广泛用于常规导航。船只和飞机可以利用此技术来保持航向并避免潜在危险。通过持续监测来自各种来源的无线电信号，操作员可以确保他们走在正确的轨道上，并对航线进行必要的调整。这种主动的方法显著提高了旅行中的安全性。技术的进步进一步提高了超高频方向探测器的功能。现代设备配备了数字处理能力，使方向寻找更快、更准确。此外，许多当代系统可以与其他导航工具（如GPS）集成，为用户提供对周围环境的全面理解。这种集成在复杂环境中尤为有益，因为在这些环境中可能存在多个信号。尽管有其优势，使用超高频方向探测器也面临挑战。例如，设备的有效性可能受到环境因素的影响，如地形、天气条件以及建筑物或山脉等障碍物。操作员必须意识到这些限制，并将设备作为更广泛导航策略的一部分，该策略包括其他技术和方法。总之，超高频方向探测器是导航和通信领域中不可或缺的工具。其准确确定无线电信号方向的能力使其在搜救操作、常规导航以及海洋和航空环境中的整体安全方面至关重要。随着技术的不断发展，超高频方向探测器可能会变得更加复杂，从而进一步增强其在确保全球安全旅行中的实用性和有效性。