single sideband modulation

简明释义

单边带灯

英英释义

例句

1.The use of single sideband modulation 单边带调制 in satellite communications helps reduce the amount of power needed for transmission.

在卫星通信中使用单边带调制 单边带调制有助于减少传输所需的功率。

2.In amateur radio, many operators prefer using single sideband modulation 单边带调制 for its efficient use of bandwidth.

在业余无线电中，许多操作员更喜欢使用单边带调制 单边带调制，因为它有效利用带宽。

3.The single sideband modulation 单边带调制 technique allows for clearer voice transmission over long distances.

该单边带调制 单边带调制技术允许在长距离上传输更清晰的语音。

4.Many military communications systems utilize single sideband modulation 单边带调制 for secure and reliable transmissions.

许多军事通信系统利用单边带调制 单边带调制进行安全可靠的传输。

5.When setting up a new radio station, it's essential to understand single sideband modulation 单边带调制 to optimize your signal.

在建立新的无线电台时，了解单边带调制 单边带调制以优化信号是至关重要的。

作文

In the realm of telecommunications, various modulation techniques are employed to transmit information effectively over different mediums. One such technique is single sideband modulation, which has become a cornerstone in the field of radio communications. Understanding single sideband modulation is essential for anyone interested in radio technology, as it offers several advantages over traditional amplitude modulation (AM) methods.To grasp the concept of single sideband modulation, we first need to understand what modulation is. 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 to be transmitted. In traditional AM, both the upper and lower sidebands are transmitted along with the carrier frequency. This results in a significant amount of power being wasted on transmitting redundant information.Single sideband modulation addresses this inefficiency by eliminating one of the sidebands and the carrier frequency, thereby allowing for a more efficient use of bandwidth and power. In essence, single sideband modulation transmits only the upper or lower sideband, carrying the same amount of information while using less power. This makes it particularly valuable for long-distance communication, where conserving energy and bandwidth is crucial.The technical implementation of single sideband modulation involves complex signal processing techniques. The modulation process begins with the generation of a modulating signal, which is then mixed with the carrier signal. Through a process called filtering, either the upper or lower sideband is selected for transmission. This selective filtering is what allows single sideband modulation to operate efficiently, as it removes unnecessary components from the signal.One of the primary advantages of single sideband modulation is its improved signal quality over long distances. Because it uses less power, it can achieve better signal-to-noise ratios, making it easier for receivers to decode the transmitted information. Additionally, since it occupies less bandwidth, multiple signals can be transmitted simultaneously without causing interference, which is particularly beneficial in crowded frequency bands.Moreover, single sideband modulation is widely used in various applications beyond traditional radio broadcasting. It is commonly employed in amateur radio, aviation, marine communications, and even in some digital modes of communication. The versatility of single sideband modulation makes it an essential tool for modern communicators.However, it is important to note that while single sideband modulation offers many benefits, it also comes with its challenges. For instance, the demodulation process requires more sophisticated equipment compared to standard AM receivers. This can pose a barrier for some users who may not have access to the necessary technology. Additionally, the complexity of single sideband modulation can make it less intuitive for beginners in the field of radio communications.In conclusion, single sideband modulation represents a significant advancement in the field of telecommunications. By eliminating unnecessary components of the signal, it provides a more efficient means of communication that is vital for long-distance transmission. As technology continues to evolve, understanding and mastering single sideband modulation will remain crucial for anyone looking to excel in the world of radio communications. Whether you are a hobbyist or a professional, the principles behind single sideband modulation will undoubtedly enhance your understanding of how information is transmitted across the airwaves.

在电信领域，各种调制技术被用于有效地通过不同的媒介传输信息。其中一种技术是单边带调制，它已成为无线电通信领域的基石。理解单边带调制对于任何对无线电技术感兴趣的人来说都是必不可少的，因为它相较于传统的振幅调制（AM）方法提供了几个优势。要掌握单边带调制的概念，我们首先需要了解什么是调制。调制是改变周期波形（称为载波信号）的一个或多个属性的过程，这些属性与包含要传输的信息的调制信号相关。在传统的AM中，上下边带和载波频率都被传输。这导致大量的功率浪费在传输冗余信息上。单边带调制通过消除一个边带和载波频率来解决这种低效，从而允许更有效地使用带宽和功率。本质上，单边带调制仅传输上边带或下边带，携带相同数量的信息，同时使用更少的功率。这使得它在长距离通信中尤为重要，因为节省能源和带宽至关重要。单边带调制的技术实现涉及复杂的信号处理技术。调制过程始于生成调制信号，然后将其与载波信号混合。通过称为过滤的过程，选择上边带或下边带进行传输。这种选择性过滤就是使单边带调制高效运作的原因，因为它去除了信号中的不必要成分。单边带调制的主要优势之一是其在长距离上的信号质量改善。因为它使用更少的功率，所以可以达到更好的信噪比，使接收器更容易解码传输的信息。此外，由于它占用更少的带宽，可以同时传输多个信号而不会造成干扰，这在拥挤的频带中特别有利。此外，单边带调制在传统无线电广播之外的各种应用中也被广泛使用。它通常用于业余无线电、航空、海洋通信，甚至某些数字通信模式。单边带调制的多功能性使其成为现代通信者的重要工具。然而，需要注意的是，尽管单边带调制提供了许多好处，但它也伴随着挑战。例如，解调过程需要比标准AM接收器更复杂的设备。这可能对一些用户构成障碍，因为他们可能无法获得所需的技术。此外，单边带调制的复杂性可能使其对于无线电通信领域的初学者来说不那么直观。总之，单边带调制代表了电信领域的一项重大进步。通过消除信号的不必要成分，它提供了一种更高效的通信方式，这对于长距离传输至关重要。随着技术的不断发展，理解和掌握单边带调制仍将对任何希望在无线电通信领域取得成功的人至关重要。无论你是爱好者还是专业人士，单边带调制背后的原理无疑会增强你对信息如何在空气中传播的理解。