double side band

简明释义

双边带

英英释义

例句

1.In amateur radio, many operators prefer double side band for its efficient use of bandwidth.

在业余无线电中，许多操作员更喜欢双边带，因为它有效利用了带宽。

2.The radio transmitter uses a double side band modulation technique to improve signal clarity.

该无线电发射器使用双边带调制技术来提高信号清晰度。

3.The double side band system allows for better audio quality in communication.

该双边带系统在通信中提供了更好的音频质量。

4.When setting up the ham radio, ensure the double side band settings are properly configured.

在设置业余无线电时，请确保双边带设置已正确配置。

5.The double side band signal is less susceptible to noise compared to single side band.

与单边带相比，双边带信号对噪声的抵抗力更强。

作文

In the realm of communication technology, the term double side band refers to a method of amplitude modulation that is widely used in radio broadcasting and telecommunications. This technique involves transmitting two sidebands that carry the same information, allowing for more efficient use of bandwidth and better signal quality. The concept of double side band can be understood by breaking down its components. Amplitude modulation (AM) is a process where the amplitude of a carrier wave is varied in proportion to the message signal. In the case of double side band, both the upper and lower sidebands are transmitted simultaneously, which means that the full spectrum of the modulated signal is utilized. One of the primary advantages of using double side band modulation is that it provides a more robust signal, especially over long distances. This is crucial in radio communications, where clarity and reliability are paramount. Unlike single sideband (SSB) modulation, which transmits only one of the sidebands and suppresses the carrier frequency, double side band retains both sidebands, resulting in a stronger signal that is less susceptible to noise and interference. Moreover, the double side band technique is particularly beneficial in scenarios where the receiver may not have the capability to demodulate single sideband signals effectively. For instance, traditional AM radio receivers are designed to decode double side band signals, making this method more accessible to the general public. This accessibility has contributed to the widespread adoption of double side band in commercial radio broadcasting. However, double side band is not without its drawbacks. One significant disadvantage is the inefficiency in power usage. Since both sidebands and the carrier are transmitted, the overall power required for transmission is higher compared to SSB. This can be a critical factor for applications where power conservation is essential, such as in mobile communications or satellite transmissions. To illustrate the practical applications of double side band, consider its use in aviation communication. Pilots rely on clear and reliable communication with air traffic control, and the use of double side band ensures that their messages are transmitted with clarity, minimizing the risk of miscommunication. Similarly, emergency services utilize double side band for dispatch communications, ensuring that vital information is conveyed accurately and promptly. In conclusion, the concept of double side band plays a crucial role in the field of communication technology. Its ability to transmit robust signals makes it a preferred choice in various applications, from radio broadcasting to aviation communications. While it has its limitations, the benefits of double side band modulation continue to make it a relevant and important technique in today's world of wireless communication. Understanding this term and its implications allows us to appreciate the complexities of how we connect and communicate with one another in an increasingly interconnected society.

在通信技术领域，术语双边带指的是一种广泛用于广播和电信的调幅方法。这种技术涉及同时传输两个边带，这些边带携带相同的信息，从而更有效地利用带宽并提高信号质量。双边带的概念可以通过分解其组成部分来理解。调幅（AM）是一个过程，其中载波的幅度根据消息信号进行变化。在双边带的情况下，上边带和下边带同时被传输，这意味着调制信号的整个频谱都得到了利用。使用双边带调制的主要优点之一是它提供了更强大的信号，特别是在长距离传输中。这在无线电通信中至关重要，因为清晰度和可靠性至关重要。与单边带（SSB）调制不同，后者只传输一个边带并抑制载波频率，双边带保留了两个边带，从而产生了更强的信号，减少了噪声和干扰的影响。此外，双边带技术在接收器可能无法有效解调单边带信号的情况下特别有利。例如，传统的AM收音机接收器设计用于解码双边带信号，使这种方法对公众更加可及。这种可及性促成了双边带在商业广播中的广泛采用。然而，双边带并非没有缺点。一个显著的缺点是功率使用效率低。由于同时传输两个边带和载波，因此所需的总体传输功率高于SSB。这对于需要节省功率的应用，如移动通信或卫星传输，可能是一个关键因素。为了说明双边带的实际应用，可以考虑它在航空通信中的使用。飞行员依赖于与空中交通管制的清晰可靠的通信，而使用双边带确保他们的信息以清晰的方式传输，最小化误通信的风险。同样，紧急服务利用双边带进行调度通信，确保重要信息准确及时地传达。总之，双边带的概念在通信技术领域发挥着至关重要的作用。它传输强大信号的能力使其成为各种应用的首选，从广播到航空通信。尽管它有其局限性，但双边带调制的好处仍然使其在当今无线通信的世界中成为一种相关且重要的技术。理解这个术语及其含义使我们能够欣赏我们在日益互联的社会中如何连接和沟通的复杂性。