single side band

简明释义

单边带

英英释义

例句

1.The single side band technology reduces noise and improves audio quality.

单边带技术减少了噪音并提高了音频质量。

2.Using single side band allows for more efficient use of bandwidth.

使用单边带可以更有效地利用带宽。

3.When sailing, we rely on single side band radios to communicate with the shore.

在航行时，我们依靠单边带无线电与岸边进行通信。

4.The radio operator switched to single side band for clearer communication.

无线电操作员切换到单边带以获得更清晰的通信。

5.Many amateur radio enthusiasts prefer single side band for long-distance conversations.

许多业余无线电爱好者更喜欢使用单边带进行长途对话。

作文

In the world of radio communications, efficiency and clarity are paramount. One of the most significant advancements in this field is the technique known as single side band. This method of modulation allows for more effective transmission of signals over long distances, making it a vital tool for amateur radio operators, commercial broadcasters, and military communications alike. Understanding the principles behind single side band can greatly enhance one's appreciation for radio technology and its applications.To grasp the concept of single side band, it's essential to first understand amplitude modulation (AM). In traditional AM broadcasting, a carrier wave is modulated by the audio signal, creating two sidebands: the upper and lower sideband. These sidebands carry the same information, but they are redundant, leading to inefficient use of bandwidth. Single side band addresses this inefficiency by eliminating one of the sidebands and the carrier wave, allowing for a more narrow bandwidth and clearer signal.The primary advantage of using single side band is that it requires significantly less power and bandwidth compared to conventional AM. This makes it particularly useful for long-distance communication, where every watt of power counts. For instance, in maritime and aeronautical communications, where vessels and aircraft may be far from land, the ability to transmit clear messages over vast distances is crucial. By utilizing single side band, operators can maintain communication without needing excessive power or equipment.Moreover, single side band is less susceptible to interference and noise, which is a common issue in radio communications. Because it transmits only one sideband, the signal remains stronger and clearer, even in challenging conditions. This reliability is why single side band has become the preferred mode of operation for many professional and amateur radio operators.In addition to its technical advantages, single side band also opens up new possibilities for digital communication. With the advent of digital modes such as PSK31 and FT8, operators can send text and data over radio frequencies using single side band techniques. This fusion of technologies allows for even greater efficiency and versatility in communications, enabling operators to connect with others around the globe.Learning to operate using single side band may seem daunting at first, especially for newcomers to the world of radio. However, many resources are available, including online tutorials, local amateur radio clubs, and instructional books. As one gains experience, the benefits of single side band become evident, leading to improved communication skills and a deeper understanding of radio technology.In conclusion, single side band represents a remarkable innovation in the field of radio communications. Its ability to transmit clear signals over long distances with minimal power usage makes it an invaluable tool for various applications. As technology continues to evolve, the principles behind single side band will undoubtedly play a crucial role in shaping the future of communication. Embracing this technology not only enhances our understanding of radio but also connects us with people across the globe, transcending geographical boundaries and fostering a spirit of community among radio enthusiasts.

在无线电通信的世界中，效率和清晰度至关重要。该领域最重要的进展之一是称为单边带的调制技术。这种调制方法允许更有效地传输长距离信号，使其成为业余无线电操作员、商业广播商和军事通信等领域的重要工具。理解单边带背后的原理可以大大增强人们对无线电技术及其应用的欣赏。要理解单边带的概念，首先需要了解幅度调制（AM）。在传统的AM广播中，载波波被音频信号调制，产生两个边带：上边带和下边带。这些边带携带相同的信息，但它们是冗余的，导致带宽的低效使用。单边带通过消除一个边带和载波来解决这一低效问题，从而允许更窄的带宽和更清晰的信号。使用单边带的主要优点是，与传统的AM相比，它所需的功率和带宽显著较少。这使得它在长距离通信中尤其有用，在这种情况下，每一瓦特的功率都是至关重要的。例如，在海事和航空通信中，船只和飞机可能远离陆地，在广阔的距离上传输清晰的信息至关重要。通过利用单边带，操作员可以在不需要过多功率或设备的情况下保持通信。此外，单边带对干扰和噪声的抵抗力也更强，这是无线电通信中常见的问题。由于它只传输一个边带，信号在困难条件下仍然保持较强和清晰。这种可靠性就是为什么单边带成为许多专业和业余无线电操作员首选操作模式的原因。除了其技术优势，单边带还为数字通信开辟了新的可能性。随着PSK31和FT8等数字模式的出现，操作员可以使用单边带技术通过无线电频率发送文本和数据。这种技术的融合使通信变得更加高效和多功能，使操作员能够与全球的其他人连接。学习使用单边带进行操作起初可能会让人感到畏惧，特别是对于无线电新手。然而，有许多资源可供使用，包括在线教程、本地业余无线电俱乐部和教材。随着经验的积累，单边带的好处变得显而易见，从而提高了通信技能，加深了对无线电技术的理解。总之，单边带代表了无线电通信领域的一项显著创新。其以最小的功率消耗在长距离内传输清晰信号的能力，使其成为各种应用中不可或缺的工具。随着技术的不断发展，单边带背后的原理无疑将在塑造未来通信方面发挥关键作用。拥抱这项技术不仅增强了我们对无线电的理解，还将我们与全球的人们联系起来，超越地理界限，促进无线电爱好者之间的社区精神。