single sideband

简明释义

单边带

英英释义

例句

1.In aviation, single sideband is used for reliable communication between pilots and air traffic control.

在航空领域，单边带用于飞行员与空中交通管制之间的可靠通信。

2.Using single sideband can significantly reduce bandwidth usage during communication.

使用单边带可以显著减少通信过程中的带宽使用。

3.The ship's communication system utilizes single sideband for clearer voice signals over long distances.

船舶的通信系统利用单边带在长距离上获得更清晰的语音信号。

4.Amateur radio enthusiasts often prefer single sideband for long-distance conversations.

业余无线电爱好者通常更喜欢使用单边带进行远距离对话。

5.The radio operator switched to single sideband to improve the clarity of the transmission.

无线电操作员切换到单边带以提高传输的清晰度。

作文

In the world of radio communications, various techniques and methods are employed to ensure clear and efficient transmission of signals. One such technique is known as single sideband, which is a form of amplitude modulation (AM) that has become increasingly popular among amateur radio operators and in commercial broadcasting. The primary advantage of single sideband (SSB) over traditional AM is its ability to use less bandwidth and provide improved signal quality, making it an essential tool for effective communication.To understand the significance of single sideband, it is important to first grasp the basics of amplitude modulation. In standard AM, the carrier wave is modulated by the audio signal, resulting in two sidebands: the upper sideband and the lower sideband. These sidebands carry the same information but occupy more bandwidth than necessary. This excess bandwidth can lead to interference with other signals and reduce overall communication efficiency.With single sideband, only one of the sidebands is transmitted, while the carrier wave is suppressed. This means that the bandwidth required for transmission is significantly reduced, allowing for more efficient use of the available frequency spectrum. Additionally, because the power is concentrated in a single sideband, the transmitted signal can travel further and be received more clearly, even in challenging conditions.The applications of single sideband are vast and varied. In amateur radio, SSB is favored for long-distance communication, particularly in the HF (high frequency) bands. Operators can communicate across continents with minimal power, thanks to the efficiency of SSB. Furthermore, many marine and aviation communications also utilize single sideband technology to maintain reliable contact over long distances.Moreover, single sideband is not limited to voice communication; it can also be used for data transmission. Digital modes such as PSK31 and RTTY often rely on SSB for effective signal propagation. This versatility makes single sideband a preferred choice for various communication needs.Despite its advantages, single sideband does come with some challenges. For instance, the demodulation process can be more complex than that of traditional AM, requiring specific equipment and knowledge to operate effectively. Additionally, the lack of a carrier signal can make it more difficult for operators to tune in to the correct frequency, especially for those who are new to the technology.In conclusion, single sideband represents a significant advancement in radio communication technology. Its ability to transmit clear signals over long distances while using less bandwidth has made it a crucial component of modern communication systems. Whether in amateur radio, maritime, or aviation contexts, the benefits of single sideband are undeniable. As technology continues to evolve, it will be interesting to see how SSB adapts and remains relevant in the ever-changing landscape of radio communications.

在无线电通信的世界中，各种技术和方法被用来确保信号的清晰和高效传输。其中一种技术被称为单边带，这是一种调幅（AM）的形式，在业余无线电爱好者和商业广播中变得越来越流行。单边带（SSB）相对于传统的AM的主要优势在于它能够使用更少的带宽并提供更好的信号质量，使其成为有效通信的重要工具。为了理解单边带的重要性，首先需要掌握调幅的基本知识。在标准AM中，载波波形被音频信号调制，产生上下两个边带。这些边带携带相同的信息，但占用了比必要更多的带宽。这种多余的带宽可能导致其他信号之间的干扰，并降低整体通信效率。通过单边带，只传输一个边带，同时抑制载波波形。这意味着所需的传输带宽显著减少，从而允许更有效地利用可用的频谱。此外，由于功率集中在一个边带上，传输的信号可以传播得更远，并在困难条件下更清晰地接收。单边带的应用广泛而多样。在业余无线电中，SSB因其在HF（高频）波段的长距离通信而受到青睐。操作员可以以最小的功率进行跨洲际通信，这得益于SSB的高效性。此外，许多海洋和航空通信也利用单边带技术在长距离内保持可靠联系。此外，单边带不仅限于语音通信；它还可以用于数据传输。PSK31和RTTY等数字模式通常依赖SSB进行有效的信号传播。这种多功能性使得单边带成为各种通信需求的首选。尽管有其优势，单边带也面临一些挑战。例如，解调过程可能比传统AM更复杂，需要特定的设备和知识才能有效操作。此外，缺乏载波信号可能使操作员更难以调谐到正确的频率，尤其是对于那些新接触这项技术的人。总之，单边带代表了无线电通信技术的重要进步。它在使用更少带宽的同时，能够在长距离内传输清晰信号，使其成为现代通信系统的重要组成部分。无论是在业余无线电、海洋还是航空环境中，单边带的好处都是不可否认的。随着技术的不断发展，观察SSB如何适应并在无线电通信日益变化的环境中保持相关性，将会是很有趣的。