maximum usable frequency

简明释义

最大可用频率;最高可用频率

英英释义

例句

1.Before the flight, the pilot checked the maximum usable frequency 最大可用频率 for air traffic control communications.

在飞行之前，飞行员检查了空中交通管制通信的最大可用频率 最大可用频率 。

2.Understanding the maximum usable frequency 最大可用频率 is crucial for maintaining effective satellite communications.

理解最大可用频率 最大可用频率 对于维持有效的卫星通信至关重要。

3.The radio operator calculated the maximum usable frequency 最大可用频率 for the communication link to ensure clear transmission.

无线电操作员计算了通信链路的最大可用频率 最大可用频率 以确保清晰传输。

4.The technician explained how to determine the maximum usable frequency 最大可用频率 based on atmospheric conditions.

技术员解释了如何根据大气条件确定最大可用频率 最大可用频率 。

5.During the storm, we had to adjust our settings to match the maximum usable frequency 最大可用频率 for reliable communication.

在暴风雨期间，我们不得不调整设置以匹配可靠通信的最大可用频率 最大可用频率 。

作文

The concept of maximum usable frequency is crucial in the field of radio communications and signal propagation. It refers to the highest frequency at which a radio wave can be transmitted or received effectively under specific conditions. Understanding this concept is essential for engineers and technicians who design communication systems, as it influences the choice of equipment and the overall performance of the system.When discussing maximum usable frequency (often abbreviated as MUF), it is important to consider the factors that affect it. One significant factor is the ionosphere's condition, which varies depending on time of day, solar activity, and season. The ionosphere is a layer of the Earth's atmosphere that is ionized by solar radiation and plays a vital role in radio wave propagation. During the daytime, the ionosphere is more ionized, which typically allows for higher frequencies to be used effectively. Conversely, at night, the ionization decreases, leading to a lower maximum usable frequency.Another aspect to consider is the geographical location of the transmitter and receiver. Different regions may experience varying levels of ionospheric activity, which can impact the maximum usable frequency. For example, areas closer to the equator may have more stable conditions for higher frequencies compared to polar regions where ionospheric disturbances are more common.In practical applications, knowing the maximum usable frequency helps operators choose the right frequency for their communications. If they select a frequency above the MUF, the signal may not reach its destination effectively, resulting in poor communication quality or complete loss of signal. On the other hand, if they choose a frequency well below the MUF, the signal may be transmitted successfully but could suffer from interference or congestion, especially during peak usage times.Moreover, the maximum usable frequency is not a fixed value; it changes over time and can be influenced by various atmospheric conditions. This variability necessitates that operators continuously monitor and adjust their frequencies to ensure optimal communication. Tools such as propagation prediction software and real-time ionospheric data can assist in determining the current MUF, allowing for more effective planning and operation of communication systems.In conclusion, the maximum usable frequency is a fundamental concept in radio communications that impacts how signals are transmitted and received. By understanding the factors that influence the MUF, operators can make informed decisions about frequency selection, ensuring reliable communication. As technology continues to advance, the importance of mastering concepts like the maximum usable frequency will only grow, highlighting the need for ongoing education and adaptation in the field of telecommunications.

“最大可用频率”这一概念在无线通信和信号传播领域至关重要。它指的是在特定条件下，能够有效传输或接收无线电波的最高频率。理解这一概念对设计通信系统的工程师和技术人员至关重要，因为它影响着设备的选择和系统的整体性能。当讨论“最大可用频率”（通常缩写为MUF）时，重要的是要考虑影响它的因素。其中一个重要因素是电离层的状态，它会根据白天时间、太阳活动和季节而变化。电离层是地球大气层的一部分，受到太阳辐射的电离，对无线电波传播起着重要作用。在白天，电离层的电离程度较高，这通常允许使用更高的频率。相反，在夜间，电离程度降低，导致“最大可用频率”下降。另一个需要考虑的方面是发射器和接收器的地理位置。不同地区可能经历不同程度的电离层活动，这会影响“最大可用频率”。例如，靠近赤道的地区可能具有更稳定的高频条件，而极地地区则更容易出现电离层干扰。在实际应用中，了解“最大可用频率”可以帮助操作员选择合适的通信频率。如果他们选择的频率高于MUF，信号可能无法有效到达目的地，导致通信质量差或完全失去信号。另一方面，如果他们选择的频率远低于MUF，信号可能会成功传输，但可能会遭受干扰或拥堵，尤其是在高峰使用时。此外，“最大可用频率”并不是一个固定值；它会随着时间变化，并受到各种大气条件的影响。这种变化性要求操作员持续监测和调整频率，以确保最佳通信。传播预测软件和实时电离层数据等工具可以帮助确定当前的MUF，从而使通信系统的规划和操作更为有效。总之，“最大可用频率”是无线通信中的一个基本概念，影响着信号的传输和接收。通过理解影响MUF的因素，操作员可以在频率选择上做出明智的决策，确保可靠的通信。随着技术的不断进步，掌握“最大可用频率”等概念的重要性将日益增强，这突显了在电信领域持续教育和适应的必要性。