sky wave

简明释义

天波

英英释义

例句

1.Using sky wave technology, we can communicate across continents.

利用天波技术，我们可以跨洲进行通信。

2.The radio signal was transmitted via a sky wave to reach remote areas.

无线电信号通过天波传输，以覆盖偏远地区。

3.Amateur radio operators often rely on sky wave transmission for long-distance contacts.

业余无线电操作员通常依赖于天波传输进行长距离联系。

4.The sky wave phenomenon allows signals to bounce off the ionosphere.

天波现象允许信号反弹回电离层。

5.During the night, the sky wave propagation improves communication range.

在夜间，天波传播提高了通信范围。

作文

In the realm of radio communications, the term sky wave refers to a type of radio wave that is reflected off the ionosphere and travels back to Earth. This phenomenon is crucial for long-distance communication, especially in areas where direct line-of-sight transmission is not feasible. The sky wave propagation allows signals to reach beyond the horizon, enabling communication over vast distances. This capability has been particularly important for maritime and aeronautical communications, where ships and aircraft often operate far from terrestrial stations.The science behind sky wave propagation is fascinating. The ionosphere, a layer of the atmosphere filled with charged particles, acts like a mirror for certain frequencies of radio waves. When these waves hit the ionosphere at the right angle, they are reflected back towards the Earth, allowing them to travel much farther than they would otherwise. This reflection can occur multiple times, creating a complex path that can sometimes lead to unexpected results, such as fading or interference.One of the key advantages of sky wave communication is its ability to cover large geographical areas. For example, during the daytime, lower frequency waves may be absorbed by the ionosphere, making long-distance communication challenging. However, at night, the ionosphere becomes more conducive to the reflection of these waves, allowing for better reception and transmission. This variation is why many radio stations adjust their broadcasting power and frequencies depending on the time of day.Despite its advantages, sky wave propagation also comes with challenges. The reliability of this type of communication can be affected by solar activity, which can cause fluctuations in the ionosphere. Solar flares and geomagnetic storms can disrupt radio signals, leading to poor communication quality or complete outages. As a result, operators must be aware of solar conditions and adjust their communication strategies accordingly.Furthermore, the sky wave phenomenon is not limited to radio communications. It also plays a role in various forms of wireless technology, including amateur radio and even some satellite communications. Enthusiasts often experiment with sky wave propagation to establish contact with distant stations, sometimes reaching countries thousands of miles away using just a simple setup.In conclusion, the concept of sky wave is integral to understanding long-distance radio communication. Its ability to reflect signals off the ionosphere opens up a world of possibilities for connecting people across great distances. While it presents certain challenges, the benefits of sky wave propagation make it an essential element of modern communication systems. As technology continues to evolve, the principles of sky wave propagation will undoubtedly remain relevant, helping us to stay connected in an increasingly globalized world.

在无线电通信领域，术语sky wave指的是一种无线电波，它被反射到电离层并返回地球。这一现象对于远距离通信至关重要，尤其是在直接视线传输不可行的区域。sky wave传播使信号能够超越地平线，从而实现跨越广阔距离的通信。这种能力对于海洋和航空通信尤为重要，因为船只和飞机通常在远离陆地站点的地方操作。sky wave传播背后的科学原理令人着迷。电离层是充满带电粒子的气氛层，像某些频率的无线电波的镜子。当这些波以合适的角度撞击电离层时，它们会被反射回地球，使它们能够比其他情况下传播得更远。这种反射可以发生多次，形成复杂的传播路径，有时会导致意想不到的结果，例如衰减或干扰。sky wave通信的一个主要优势是其覆盖大地理区域的能力。例如，在白天，低频波可能会被电离层吸收，从而使远距离通信变得具有挑战性。然而，在夜间，电离层变得更有利于这些波的反射，从而提高接收和传输效果。这种变化就是为什么许多广播电台根据一天中的时间调整其广播功率和频率。尽管有其优势，sky wave传播也面临挑战。这种通信类型的可靠性可能会受到太阳活动的影响，这可能导致电离层的波动。太阳耀斑和地磁风暴可能会干扰无线电信号，导致通信质量下降或完全中断。因此，操作员必须了解太阳条件，并相应地调整其通信策略。此外，sky wave现象不仅限于无线电通信。它还在各种无线技术形式中发挥作用，包括业余无线电，甚至一些卫星通信。爱好者经常尝试使用sky wave传播与遥远的站点建立联系，有时仅用简单的设备就能与数千英里外的国家取得联系。总之，sky wave的概念对于理解远距离无线电通信至关重要。它通过反射信号到电离层，为跨越巨大距离连接人们开辟了可能性。尽管存在某些挑战，但sky wave传播的好处使其成为现代通信系统的一个重要组成部分。随着技术的不断发展，sky wave传播的原理无疑将继续保持相关性，帮助我们在日益全球化的世界中保持联系。