upper side band

简明释义

上边带

英英释义

例句

1.The technician explained that the upper side band is essential for single-sideband modulation.

技术人员解释说，上边带对于单边带调制是必不可少的。

2.In amateur radio, using the upper side band can help reduce interference from other signals.

在业余无线电中，使用上边带可以帮助减少其他信号的干扰。

3.The radio operator tuned the frequency to the upper side band for clearer communication.

无线电操作员将频率调至上边带以获得更清晰的通信。

4.During the emergency broadcast, the team switched to the upper side band to ensure all messages were received.

在紧急广播期间，团队切换到上边带以确保所有消息都被接收。

5.For long-distance communication, operators prefer the upper side band mode.

为了远距离通信，操作员更喜欢使用上边带模式。

作文

In the realm of radio communications, understanding the various components of signal transmission is crucial for effective operation. One such component is the concept of the upper side band, which plays a significant role in amplitude modulation (AM). To grasp the importance of the upper side band, we must first delve into how AM works. In amplitude modulation, the amplitude of a carrier wave is varied in proportion to the waveform being sent, which contains the desired information. This modulation creates two sidebands: the lower side band and the upper side band. The upper side band refers to the range of frequencies above the carrier frequency that carries the information of the modulated signal. It is essential because it contains the actual audio or data signals that we want to transmit. When a signal is modulated, the upper side band effectively represents the higher frequency components of the original signal, allowing for clearer communication over distances. For instance, in amateur radio, operators often use single sideband (SSB) transmission, which can be either upper or lower. The choice between using the upper side band and the lower side band depends on various factors, including the frequency being used and the conditions of the transmission. The upper side band is often preferred for its efficiency in power usage, as it allows for better signal clarity and reduced bandwidth consumption. Moreover, the ability to filter out the lower side band while retaining the upper side band means that operators can communicate more effectively without interference from unwanted frequencies. This is particularly useful in crowded radio environments where multiple signals may overlap. By focusing on the upper side band, operators can ensure that their messages are transmitted clearly and received accurately. In practical applications, understanding the upper side band is also vital for those involved in designing and operating communication equipment. Engineers must consider how to optimize receivers and transmitters to effectively process the upper side band signals. This includes selecting appropriate filters and amplifiers that can enhance the quality of the received signal while minimizing noise and distortion. Furthermore, the upper side band has implications beyond just amateur radio. It is widely used in aviation, maritime communication, and military operations, where reliable and clear communication is paramount. Pilots and air traffic controllers rely on upper side band transmissions to convey critical information quickly and efficiently, ensuring safety in the skies. Similarly, naval vessels utilize upper side band communications to coordinate operations and maintain contact with command centers. In conclusion, the concept of the upper side band is integral to understanding modern communication systems. Its role in amplitude modulation, along with its applications in various fields, highlights the importance of mastering this aspect of signal transmission. Whether you are an amateur radio enthusiast or a professional in the communications industry, a solid grasp of the upper side band will undoubtedly enhance your ability to communicate effectively in an increasingly connected world.

在无线电通信领域，理解信号传输的各种组成部分对于有效操作至关重要。其中一个重要的组成部分是上边带的概念，它在调幅（AM）中发挥着重要作用。要理解上边带的重要性，我们首先必须深入了解调幅是如何工作的。在调幅中，载波波的幅度根据所发送的波形变化，这个波形包含了所需的信息。这种调制产生了两个边带：下边带和上边带。上边带指的是载波频率之上的频率范围，它承载着调制信号的信息。它之所以重要，是因为它包含我们希望传输的实际音频或数据信号。当信号被调制时，上边带有效地代表了原始信号的高频成分，从而使得在远距离上进行更清晰的通信成为可能。例如，在业余无线电中，操作员通常使用单边带（SSB）传输，这可以是上边带或下边带。选择使用上边带还是下边带取决于多种因素，包括所使用的频率和传输条件。由于上边带在功率使用上的效率，它通常被优先选择，因为它能够提供更好的信号清晰度和减少带宽消耗。此外，能够滤除下边带而保留上边带意味着操作员可以在没有干扰的情况下更有效地进行通信。这在多个信号可能重叠的拥挤无线电环境中尤其有用。通过专注于上边带，操作员可以确保他们的信息被清晰地传输并准确接收。在实际应用中，理解上边带对于那些参与设计和操作通信设备的人来说也是至关重要的。工程师必须考虑如何优化接收器和发射器，以有效处理上边带信号。这包括选择适当的滤波器和放大器，以增强接收信号的质量，同时最小化噪声和失真。此外，上边带不仅在业余无线电中具有重要意义。它被广泛用于航空、海事通信和军事行动中，在这些领域，可靠和清晰的通信至关重要。飞行员和空中交通管制员依赖于上边带传输快速高效地传达关键信息，从而确保空中的安全。同样，海军舰艇利用上边带通信来协调行动并与指挥中心保持联系。总之，上边带的概念对于理解现代通信系统至关重要。它在调幅中的作用以及在各个领域的应用突显了掌握这一信号传输方面的重要性。无论你是业余无线电爱好者还是通信行业的专业人士，对上边带的深刻理解无疑将提升你在一个日益互联的世界中有效沟通的能力。