short wave fadeout

简明释义

短波衰减

英英释义

例句

1.During the radio broadcast, we experienced a sudden short wave fadeout 短波衰减 that interrupted the signal.

在广播过程中，我们经历了突然的短波衰减 短波衰减，导致信号中断。

2.Listeners reported a noticeable short wave fadeout 短波衰减 during the evening transmission.

听众报告称，在晚间传输中出现了明显的短波衰减 短波衰减。

3.The short wave fadeout 短波衰减 made it difficult for listeners to catch the news updates.

这次短波衰减 短波衰减使得听众很难获取新闻更新。

4.Engineers are working on solutions to minimize short wave fadeout 短波衰减 during transmissions.

工程师们正在研究解决方案，以尽量减少传输中的短波衰减 短波衰减。

5.The short wave fadeout 短波衰减 occurred due to atmospheric conditions affecting the signal.

由于大气条件影响信号，发生了短波衰减 短波衰减。

作文

In the world of radio communications, one term that often comes up is short wave fadeout. This phenomenon refers to the temporary loss of signal strength in short wave radio transmissions. Short wave radio operates in the frequency range of 3 to 30 MHz and is known for its ability to cover long distances by bouncing signals off the ionosphere. However, various factors can lead to a short wave fadeout, making it a crucial concept for amateur radio operators and professionals alike.Understanding the causes of short wave fadeout is essential for anyone interested in radio communications. One primary factor is the time of day. During the daytime, the sun's radiation affects the ionosphere, causing it to become more ionized. This increased ionization can enhance signal propagation, allowing for clearer communication. However, as night falls, the ionization levels decrease, which can lead to a short wave fadeout. This is particularly true during the transition periods of dawn and dusk when the ionosphere is changing.Another significant cause of short wave fadeout is the weather. Atmospheric conditions such as thunderstorms can create interference that disrupts radio signals. For instance, lightning can generate electromagnetic pulses that affect short wave signals, resulting in temporary fadeouts. Similarly, changes in humidity and temperature can alter the characteristics of the ionosphere, leading to unpredictable signal behavior.Moreover, solar activity plays a crucial role in the occurrence of short wave fadeout. Solar flares and coronal mass ejections can increase the amount of ionization in the upper atmosphere, affecting radio waves' propagation. During periods of high solar activity, radio operators may experience more frequent fadeouts, making it challenging to maintain consistent communication.To mitigate the effects of short wave fadeout, radio operators often employ various techniques. One common strategy is to adjust the frequency of transmission. By tuning into different frequencies, operators can find clearer channels that are less affected by fading. Additionally, using high-quality antennas designed for short wave communication can significantly improve signal reception, even during fadeout conditions.In conclusion, the term short wave fadeout encapsulates a critical aspect of short wave radio communications. Understanding the factors contributing to this phenomenon, such as time of day, weather conditions, and solar activity, can help radio operators effectively navigate the challenges posed by fading signals. By employing strategies to minimize the impact of fadeouts, enthusiasts and professionals can continue to enjoy the vast capabilities of short wave radio, fostering connections across great distances. With the right knowledge and tools, the world of short wave communication remains an exciting frontier for exploration and connection.

在无线电通信的世界中，一个常常出现的术语是短波衰落。这个现象指的是短波无线电传输中信号强度的暂时丧失。短波无线电工作在3到30 MHz的频率范围内，以其能够通过反射信号到达电离层而覆盖长距离而闻名。然而，各种因素可能导致短波衰落，使其成为业余无线电操作员和专业人员都必须了解的关键概念。理解短波衰落的原因对于任何对无线电通信感兴趣的人来说都是至关重要的。一个主要因素是一天中的时间。在白天，阳光的辐射影响电离层，导致其变得更加电离。这种增强的电离可以提高信号传播，使通信更加清晰。然而，随着夜幕降临，电离水平下降，这可能导致短波衰落。这在黎明和黄昏的过渡时期尤为明显，此时电离层正在变化。另一个导致短波衰落的重要原因是天气。大气条件如雷暴会产生干扰，扰乱无线电信号。例如，闪电可以产生电磁脉冲，影响短波信号，导致暂时的衰落。同样，湿度和温度的变化也会改变电离层的特性，导致信号行为不可预测。此外，太阳活动在短波衰落的发生中起着至关重要的作用。太阳耀斑和日冕物质抛射会增加高层大气中的电离量，影响无线电波的传播。在高太阳活动期间，无线电操作员可能会经历更频繁的衰落，使得保持稳定的通信变得具有挑战性。为了减轻短波衰落的影响，无线电操作员通常采用各种技术。一种常见的策略是调整传输频率。通过调谐到不同的频率，操作员可以找到更清晰的频道，减少衰落的影响。此外，使用专为短波通信设计的高质量天线可以显著改善信号接收，即使在衰落条件下也是如此。总之，术语短波衰落概括了短波无线电通信的一个关键方面。了解导致这一现象的因素，如一天中的时间、天气条件和太阳活动，可以帮助无线电操作员有效应对衰落信号带来的挑战。通过采用减小衰落影响的策略，爱好者和专业人士可以继续享受短波无线电的广泛功能，促进跨越巨大距离的联系。凭借正确的知识和工具，短波通信的世界仍然是探索和联系的令人兴奋的前沿。