sky-wave contamination

简明释义

天波干扰

英英释义

例句

1.During the storm, we noticed an increase in sky-wave contamination, leading to poor audio quality.

在暴风雨期间，我们注意到天波污染增加，导致音质变差。

2.The team implemented a new filter to reduce sky-wave contamination in their transmission equipment.

团队实施了新的过滤器，以减少其传输设备中的天波污染。

3.The radio technician explained that the interference was due to sky-wave contamination, which can distort signals from distant stations.

无线电技术员解释说，干扰是由于天波污染造成的，这会扭曲来自遥远电台的信号。

4.To improve reception, we need to minimize sky-wave contamination during nighttime broadcasts.

为了改善接收效果，我们需要在夜间广播时尽量减少天波污染。

5.The engineer conducted tests to measure the level of sky-wave contamination affecting local frequencies.

工程师进行了测试，以测量影响本地频率的天波污染水平。

作文

In the realm of radio communications, understanding various phenomena that can affect signal quality is crucial for effective transmission and reception. One such phenomenon is known as sky-wave contamination, which refers to the interference caused by signals that are reflected off the ionosphere. This reflection can lead to unwanted overlapping of signals, resulting in degraded communication quality. To better comprehend this concept, we must delve into how radio waves propagate and the role of the ionosphere in this process.Radio waves travel through the atmosphere and can be classified into two main types: ground waves and sky waves. Ground waves follow the curvature of the Earth and are typically used for short-range communication. On the other hand, sky waves can be reflected back to Earth by the ionosphere, allowing for long-distance communication. However, when multiple signals are transmitted simultaneously, the potential for sky-wave contamination arises. This occurs when one signal interferes with another due to the overlapping of sky waves that have been reflected by the ionosphere.The implications of sky-wave contamination are significant, especially in crowded frequency bands where numerous stations operate close to each other. In such scenarios, a station may receive not only its intended signal but also other signals that have been reflected and mixed together. This can lead to confusion and difficulty in distinguishing between different transmissions. As a result, operators may experience challenges in maintaining clear communication, which can be particularly problematic in emergency situations where reliable contact is essential.Moreover, sky-wave contamination can vary based on several factors, including time of day, atmospheric conditions, and solar activity. For instance, during the night, the ionosphere becomes more reflective, increasing the likelihood of sky wave propagation. Conversely, during the day, the ionosphere's characteristics change, leading to different propagation patterns. Understanding these variations is critical for radio operators who aim to optimize their communication strategies and avoid interference.To mitigate the effects of sky-wave contamination, radio engineers employ various techniques. These may include frequency management, where operators choose less congested frequencies to reduce the chance of interference. Additionally, advanced filtering technologies can help isolate desired signals from unwanted ones, enhancing overall communication clarity. Furthermore, education and training for operators on recognizing the signs of sky-wave contamination can empower them to make informed decisions about their communication methods.In conclusion, sky-wave contamination presents a unique challenge in the field of radio communications. By understanding its causes, effects, and potential solutions, operators can improve their ability to communicate effectively over long distances. As technology advances and our reliance on radio communications continues to grow, addressing issues like sky-wave contamination will remain vital for ensuring seamless and reliable connections in an increasingly interconnected world.

在无线电通信领域，理解影响信号质量的各种现象对于有效的传输和接收至关重要。其中一种现象被称为天波污染，它指的是由于信号反射到电离层而导致的干扰。这种反射可能导致信号的不必要重叠，从而导致通信质量下降。为了更好地理解这个概念，我们必须深入研究无线电波的传播方式以及电离层在这一过程中的作用。无线电波通过大气传播，可以分为两种主要类型：地面波和天波。地面波沿着地球的曲率传播，通常用于短距离通信。另一方面，天波可以被电离层反射回地球，从而实现远距离通信。然而，当同时传输多个信号时，就会产生天波污染的可能性。这发生在一个信号由于与其他信号重叠而干扰了另一个信号，这些信号都是通过电离层反射的。天波污染的影响是显著的，尤其是在频率拥挤的频段中，众多站点彼此靠近。在这种情况下，一个站点可能不仅接收到其预期的信号，还会接收到其他被反射并混合在一起的信号。这可能导致混淆，并且难以区分不同的传输。因此，操作员可能在保持清晰通信方面面临挑战，这在紧急情况下尤为重要，因为可靠的联系至关重要。此外，天波污染可能会因多种因素而异，包括一天中的时间、大气条件和太阳活动。例如，在夜间，电离层变得更加反射，提高了天波传播的可能性。相反，在白天，电离层的特性发生变化，导致不同的传播模式。了解这些变化对于希望优化通信策略并避免干扰的无线电操作员至关重要。为了减轻天波污染的影响，无线电工程师采用各种技术。这些技术可能包括频率管理，操作员选择不太拥挤的频率以减少干扰的机会。此外，先进的过滤技术可以帮助将所需信号与不必要的信号隔离，提高整体通信清晰度。此外，针对操作员进行教育和培训，使他们能够识别天波污染的迹象，可以使他们在选择通信方法时做出明智的决定。总之，天波污染在无线电通信领域提出了独特的挑战。通过理解其原因、影响和潜在解决方案，操作员可以提高他们在远距离上有效沟通的能力。随着技术的进步和我们对无线电通信的依赖不断增加，解决像天波污染这样的问题将对确保在日益互联的世界中实现无缝和可靠的连接保持至关重要。