lower sideband

简明释义

下边带

英英释义

例句

1.When tuning the radio, make sure to set it to the lower sideband 下边带 setting for optimal reception.

调节收音机时，请确保将其设置为lower sideband 下边带设置以获得最佳接收效果。

2.The lower sideband 下边带 frequency allows for clearer communication in crowded bands.

在拥挤的频段中，lower sideband 下边带频率可以实现更清晰的通信。

3.In amateur radio, operators often use the lower sideband 下边带 mode to reduce interference.

在业余无线电中，操作员通常使用lower sideband 下边带模式来减少干扰。

4.The lower sideband 下边带 transmission is particularly useful for long-distance communications.

对于远距离通信，lower sideband 下边带传输特别有用。

5.Many digital modes utilize the lower sideband 下边带 for better signal processing.

许多数字模式利用lower sideband 下边带来实现更好的信号处理。

作文

In the world of radio communications, the term lower sideband refers to a specific method of modulating a carrier wave to transmit information. Understanding this concept is crucial for anyone interested in amateur radio or professional communication systems. The lower sideband modulation technique involves shifting the frequency of the carrier wave downwards, which allows for efficient use of bandwidth and minimizes interference with adjacent channels. This is particularly important in crowded frequency bands where multiple signals can overlap, causing distortion and loss of clarity. The lower sideband is often used in single sideband (SSB) transmission, a refinement of amplitude modulation (AM). In SSB, only one of the sidebands (either upper or lower) is transmitted, while the carrier wave is suppressed. This results in a more efficient use of power and bandwidth, making it ideal for long-distance communication. The lower sideband is typically used in voice communications, especially among amateur radio operators who value clear and reliable transmissions.When a signal is modulated using lower sideband, the frequencies are shifted downward from the carrier frequency. For example, if a carrier frequency is set at 10 MHz, the lower sideband frequencies would range from 10 MHz down to 9.9 MHz, depending on the modulation. This means that when a receiver is tuned to the carrier frequency, it will effectively receive the modulated signal within this range. This characteristic of lower sideband makes it particularly useful for voice communications because it can help reduce noise and improve signal quality.Moreover, the lower sideband has practical applications beyond amateur radio. It is also utilized in military communications, aviation, and maritime operations, where reliable and clear communication is paramount. In these fields, the ability to communicate over long distances without significant degradation of the signal is essential. By employing lower sideband techniques, operators can ensure that their messages are transmitted clearly, even in challenging conditions.Understanding how to operate equipment that utilizes lower sideband is an important skill for radio enthusiasts. Operators must learn how to set their radios to the correct frequencies and understand the nuances of SSB communication. This includes adjusting their voice modulation to fit the characteristics of lower sideband transmission, which can differ from traditional AM or FM broadcasting.In conclusion, the concept of lower sideband is fundamental to modern radio communication. It allows for efficient use of bandwidth, reduces interference, and ensures clarity in voice transmissions. Whether for hobbyists or professionals, mastering lower sideband techniques can greatly enhance one's ability to communicate effectively over long distances. As technology continues to evolve, understanding such terms will remain vital for anyone involved in the field of communication.

在无线电通信的世界中，术语lower sideband指的是一种特定的调制载波波形以传输信息的方法。理解这一概念对于任何对业余无线电或专业通信系统感兴趣的人来说都是至关重要的。lower sideband调制技术涉及将载波波形的频率向下移动，这允许有效利用带宽并最小化与相邻频道的干扰。这在拥挤的频率带中尤为重要，因为多个信号可能会重叠，导致失真和清晰度丧失。lower sideband通常用于单边带（SSB）传输，这是幅度调制（AM）的精细化。在SSB中，仅传输一个边带（上边带或下边带），而载波波形被抑制。这导致更有效的功率和带宽使用，使其成为长距离通信的理想选择。lower sideband通常用于语音通信，尤其是在业余无线电爱好者中，他们重视清晰可靠的传输。当使用lower sideband调制信号时，频率向下移位。例如，如果载波频率设置为10 MHz，则lower sideband频率将范围从10 MHz降到9.9 MHz，具体取决于调制。这意味着当接收器调谐到载波频率时，它将有效地接收在此范围内的调制信号。lower sideband的这一特性使其在语音通信中尤为有用，因为它可以帮助减少噪声并提高信号质量。此外，lower sideband在业余无线电之外还有实际应用。它也被用于军事通信、航空和海事操作，其中可靠和清晰的通信至关重要。在这些领域，能够在长距离内进行通信而信号没有显著退化是必不可少的。通过采用lower sideband技术，操作员可以确保他们的信息在困难条件下也能清晰地传输。了解如何操作利用lower sideband的设备是无线电爱好者的重要技能。操作员必须学习如何将他们的无线电设置为正确的频率，并理解SSB通信的细微差别。这包括调整他们的声音调制，以适应lower sideband传输的特性，这可能与传统的AM或FM广播不同。总之，lower sideband的概念是现代无线电通信的基础。它允许有效利用带宽，减少干扰，并确保语音传输的清晰度。无论是对于爱好者还是专业人士，掌握lower sideband技术可以大大增强一个人在长距离内有效沟通的能力。随着技术的不断发展，理解这样的术语将继续对任何参与通信领域的人至关重要。