sideband modulated signal

简明释义

边带调制信号

英英释义

例句

1.The radio engineer explained how the sideband modulated signal 边带调制信号 improves the clarity of audio transmissions.

无线电工程师解释了如何通过 边带调制信号 sideband modulated signal 提高音频传输的清晰度。

2.The sideband modulated signal 边带调制信号 can carry more information than traditional AM signals.

与传统的调幅信号相比，边带调制信号 sideband modulated signal 可以承载更多信息。

3.During the experiment, they measured the strength of the sideband modulated signal 边带调制信号 to evaluate its performance.

在实验中，他们测量了 边带调制信号 sideband modulated signal 的强度以评估其性能。

4.In satellite communications, a sideband modulated signal 边带调制信号 is essential for transmitting data over long distances.

在卫星通信中，边带调制信号 sideband modulated signal 对于长距离数据传输至关重要。

5.The technician adjusted the frequency to optimize the sideband modulated signal 边带调制信号 for better reception.

技术员调整频率以优化 边带调制信号 sideband modulated signal 以获得更好的接收效果。

作文

In the realm of telecommunications and signal processing, the term sideband modulated signal refers to a type of signal that is generated when a carrier wave is modulated by an information signal. This modulation process creates sidebands that contain the information being transmitted. Understanding this concept is crucial for anyone interested in radio communications, audio broadcasting, or any field that relies on transmitting information over distances.To begin with, let’s break down what modulation means. Modulation is the process of varying one or more properties of a periodic waveform, known as the carrier signal, with respect to a modulating signal that contains the information. In the case of sideband modulated signal (中文释义：旁带调制信号), the carrier wave is altered in such a way that it produces two sidebands: the upper sideband (USB) and the lower sideband (LSB). These sidebands are symmetrical around the carrier frequency and carry the same information but in different frequency ranges.The importance of sideband modulated signal lies in its efficiency in using bandwidth. Traditional amplitude modulation (AM) transmits information using the carrier and both sidebands, which can consume a significant amount of bandwidth. However, single sideband modulation (SSB), a variant of AM, utilizes only one of the sidebands, thereby conserving bandwidth and improving transmission efficiency. This is particularly beneficial in long-distance communication where bandwidth is often a limited resource.Moreover, sideband modulated signal is widely used in various applications, including amateur radio, aviation communication, and maritime communication. For instance, in amateur radio, operators frequently use SSB to communicate over long distances. The clarity and reduced interference of SSB make it a preferred choice for many radio enthusiasts. Similarly, in aviation, pilots and air traffic controllers rely on sideband modulated signal technology to ensure clear and reliable communication, which is vital for safety.Another significant advantage of sideband modulated signal is its resilience against noise and interference. Since the information is carried in the sidebands, the receiver can be designed to filter out unwanted signals and focus on the desired frequency range. This characteristic makes SSB particularly effective in environments where signal quality may be compromised, such as in urban areas or during adverse weather conditions.However, working with sideband modulated signal does come with its challenges. One of the primary issues is the complexity of the equipment required to generate and demodulate these signals. Unlike standard AM receivers, SSB receivers need to have a method for recovering the original audio signal from the modulated carrier. This often involves using phase-locked loops or other advanced techniques, which can increase the cost and complexity of the communication system.In conclusion, the concept of sideband modulated signal is integral to modern telecommunications. Its ability to efficiently utilize bandwidth, coupled with its effectiveness in providing clear communication over long distances, makes it a favored choice in various industries. As technology continues to evolve, understanding and mastering the principles behind sideband modulated signal will remain essential for engineers, technicians, and enthusiasts alike. The future of communication undoubtedly hinges on our ability to harness and innovate upon these foundational concepts.

在电信和信号处理领域，术语旁带调制信号指的是一种信号，它是在载波波形被信息信号调制时生成的。这一调制过程产生了包含所传输信息的旁带。理解这一概念对于任何对无线通信、音频广播或任何依赖于远距离传输信息的领域感兴趣的人来说都是至关重要的。首先，让我们分解一下调制的含义。调制是指根据包含信息的调制信号来改变周期波形（称为载波信号）的一个或多个属性。在旁带调制信号（中文释义：旁带调制信号）中，载波波形以某种方式被改变，从而产生两个旁带：上旁带（USB）和下旁带（LSB）。这些旁带在载波频率周围是对称的，并且携带相同的信息，但在不同的频率范围内。旁带调制信号的重要性在于其在带宽利用方面的高效性。传统的幅度调制（AM）通过载波和两个旁带传输信息，这可能消耗大量的带宽。然而，单旁带调制（SSB）作为AM的一种变体，仅使用其中一个旁带，从而节省带宽，提高传输效率。这在长距离通信中尤为重要，因为带宽通常是有限的资源。此外，旁带调制信号广泛应用于各种领域，包括业余无线电、航空通信和海事通信。例如，在业余无线电中，操作员经常使用SSB进行远距离通信。SSB的清晰度和减少干扰使其成为许多无线电爱好者的首选。同样，在航空领域，飞行员和空中交通管制员依赖于旁带调制信号技术，以确保清晰可靠的通信，这对安全至关重要。旁带调制信号的另一个显著优势是其对噪声和干扰的抵抗力。由于信息是通过旁带传递的，接收器可以设计成过滤掉不必要的信号，专注于所需的频率范围。这一特性使得SSB在信号质量可能受到损害的环境中（如城市地区或恶劣天气条件下）特别有效。然而，使用旁带调制信号也存在一些挑战。其中一个主要问题是生成和解调这些信号所需设备的复杂性。与标准AM接收器不同，SSB接收器需要有一种方法从调制载波中恢复原始音频信号。这通常涉及使用锁相环或其他先进技术，这可能增加通信系统的成本和复杂性。总之，旁带调制信号的概念是现代电信的基础。它高效利用带宽的能力，加上在长距离提供清晰通信的有效性，使其在各个行业都受到青睐。随着技术的不断发展，理解和掌握旁带调制信号背后的原则将对工程师、技术人员和爱好者至关重要。通信的未来无疑取决于我们利用和创新这些基础概念的能力。