sky wave

简明释义

天波

英英释义

例句

1.During the night, the sky wave 天波 propagation allows AM radio stations to be heard over hundreds of miles.

在夜间，sky wave 天波传播使得AM广播电台可以在数百英里外被听到。

2.Some frequencies are better suited for sky wave 天波 transmission than others.

有些频率比其他频率更适合进行sky wave 天波传输。

3.Understanding sky wave 天波 propagation is crucial for long-range communication.

理解sky wave 天波传播对于长距离通信至关重要。

4.The radio signal traveled long distances due to the reflection of the sky wave 天波 in the ionosphere.

由于信号在电离层的反射，广播信号通过sky wave 天波传播了很远的距离。

5.The sky wave 天波 phenomenon is often utilized in amateur radio operations.

在业余无线电操作中，sky wave 天波现象常被利用。

作文

In the realm of radio communication, understanding the various types of waves is crucial for effective transmission and reception. One such type is the sky wave, which plays a significant role in long-distance communication. The sky wave is a form of radio wave that is reflected off the ionosphere, allowing it to travel beyond the horizon. This phenomenon is particularly useful for amateur radio operators and emergency services, as it enables them to communicate over vast distances without the need for satellites or other infrastructure.The ionosphere is a layer of the Earth's atmosphere that is ionized by solar radiation. It consists of several layers, each with varying densities of charged particles. When a radio wave is transmitted, it can encounter the ionosphere and be refracted back to Earth, creating a sky wave. This reflection allows the signal to cover much greater distances than ground waves, which are limited by the curvature of the Earth.One of the key advantages of using sky waves is their ability to facilitate communication during times of crisis. For instance, during natural disasters, traditional communication lines may be disrupted. However, radio operators can utilize sky waves to reach out to distant stations, ensuring that vital information can still be exchanged. This has been exemplified in events like hurricanes and earthquakes, where emergency services rely on radio communication to coordinate rescue efforts.Moreover, the use of sky waves is not limited to emergencies; it also plays a significant role in international broadcasting. Many radio stations broadcast their signals using sky waves, allowing listeners from different countries to tune in. This global reach fosters cultural exchange and provides access to diverse programming, making it an essential tool for media organizations.However, sky waves are not without their challenges. The effectiveness of these waves can be influenced by various factors, including time of day, frequency, and solar activity. For instance, during the night, the ionosphere becomes more reflective, enhancing the propagation of sky waves. Conversely, during the day, solar radiation can cause the ionosphere to become less effective at reflecting certain frequencies. Therefore, radio operators must carefully choose their transmission times and frequencies to optimize communication.In conclusion, the concept of sky wave is fundamental to understanding radio communication. Its ability to reflect off the ionosphere allows for long-distance transmission, making it invaluable for both emergency situations and international broadcasting. As technology continues to advance, the methods of utilizing sky waves may evolve, but their importance in connecting people across vast distances will remain constant. Understanding how to effectively use sky waves can empower individuals and organizations to maintain communication, even in challenging circumstances.

在无线电通信领域，理解各种波的类型对于有效的传输和接收至关重要。其中一种波是sky wave（天波），它在远程通信中发挥着重要作用。sky wave是一种通过电离层反射的无线电波，使其能够超越地平线进行传播。这种现象对于业余无线电操作员和紧急服务特别有用，因为它使他们能够在没有卫星或其他基础设施的情况下进行远距离通信。电离层是地球大气的一层，受太阳辐射的影响而电离。它由几个层次组成，每个层次的带电粒子密度不同。当无线电波被发射时，它可能会遇到电离层并被折射回地球，从而形成sky wave。这种反射使得信号能够覆盖比地面波更大的距离，而地面波受到地球曲率的限制。使用sky waves的主要优点之一是它们能够在危机时期促进通信。例如，在自然灾害期间，传统通信线路可能会中断。然而，无线电操作员可以利用sky waves与遥远的站点联系，确保重要信息仍然可以交换。这在飓风和地震等事件中得到了体现，紧急服务依靠无线电通信来协调救援工作。此外，使用sky waves不仅限于紧急情况；它在国际广播中也发挥着重要作用。许多广播电台使用sky waves广播他们的信号，使来自不同国家的听众能够收听。这种全球覆盖促进了文化交流，并提供了多样化的节目访问，使其成为媒体组织的重要工具。然而，sky waves也不是没有挑战。这些波的有效性可能受到各种因素的影响，包括时间、频率和太阳活动。例如，在夜间，电离层变得更加反射，从而增强了sky waves的传播。相反，在白天，太阳辐射可能导致电离层对某些频率的反射效果降低。因此，无线电操作员必须仔细选择他们的发射时间和频率，以优化通信。总之，sky wave的概念是理解无线电通信的基础。它通过反射电离层实现远距离传输，使其在紧急情况和国际广播中都具有不可或缺的价值。随着技术的不断进步，利用sky waves的方法可能会演变，但它们在连接人们跨越广阔距离方面的重要性将保持不变。了解如何有效使用sky waves可以使个人和组织在困难情况下保持通信。