amplitude modulation with vestigial sideband

简明释义

残留边带调幅

英英释义

例句

1.The radio station uses amplitude modulation with vestigial sideband to transmit high-quality audio signals.

这个广播电台使用带有残余边带的调幅来传输高质量的音频信号。

2.Engineers prefer amplitude modulation with vestigial sideband for its efficiency in spectrum usage.

工程师们更喜欢带有残余边带的调幅，因为它在频谱使用上效率更高。

3.In television broadcasting, amplitude modulation with vestigial sideband helps reduce bandwidth while maintaining picture quality.

在电视广播中，带有残余边带的调幅有助于减少带宽，同时保持画质。

4.Due to its advantages, amplitude modulation with vestigial sideband is widely used in digital radio broadcasting.

由于其优势，带有残余边带的调幅广泛应用于数字广播。

5.The concept of amplitude modulation with vestigial sideband is essential in modern communication systems.

在现代通信系统中，带有残余边带的调幅的概念是至关重要的。

作文

In the realm of telecommunications, various modulation techniques are employed to transmit information effectively over radio waves. One such technique is amplitude modulation with vestigial sideband, often abbreviated as VSB. This method is particularly significant in television broadcasting and has its roots in traditional amplitude modulation (AM). To understand the importance of amplitude modulation with vestigial sideband, we first need to grasp the basic principles of amplitude modulation.Amplitude modulation involves varying the strength (amplitude) of a carrier wave in accordance with the information signal, such as audio or video. The primary advantage of AM is its simplicity and ease of implementation. However, traditional AM signals have a drawback: they occupy a large bandwidth. This can lead to inefficiencies in the use of available frequency spectrum, especially when multiple channels are competing for space.To address this issue, amplitude modulation with vestigial sideband was developed. The term 'vestigial' refers to something that remains but is not fully functional or necessary. In the case of VSB, it means that one of the sidebands produced during the modulation process is partially filtered out, leaving only a vestige of it. This allows for a reduction in bandwidth while still preserving the essential information contained in the signal.The structure of a VSB signal consists of a main sideband and a vestigial sideband. The main sideband carries the majority of the information, while the vestigial sideband contains just enough information to aid in the demodulation process, ensuring that the receiver can accurately reconstruct the original signal. This method strikes a balance between efficiency and fidelity, making it an ideal choice for television broadcasts where high-quality images and sound are crucial.One of the primary applications of amplitude modulation with vestigial sideband is in the transmission of analog television signals. In the United States, for example, the NTSC (National Television System Committee) standard utilizes VSB for its broadcasts. This allows for a clearer picture and better sound quality compared to traditional AM methods. Moreover, VSB is also used in digital television (DTV) transmission, further showcasing its versatility and effectiveness in modern communication systems.Despite the rise of digital transmission methods, understanding amplitude modulation with vestigial sideband remains critical for engineers and technicians working in the field of broadcasting. It serves as a foundation upon which many modern techniques are built. Furthermore, the principles behind VSB can be applied to other areas of communication technology, including data transmission and satellite communications.In conclusion, amplitude modulation with vestigial sideband is a vital modulation technique that enhances the efficiency of signal transmission while maintaining quality. Its ability to reduce bandwidth usage without compromising the integrity of the transmitted information makes it an invaluable tool in the world of telecommunications. As technology continues to evolve, the principles of VSB will undoubtedly play a significant role in shaping the future of broadcasting and communication systems worldwide.

在电信领域，各种调制技术被用来有效地通过无线电波传输信息。其中一种技术是带有残余边带的幅度调制，通常缩写为VSB。这种方法在电视广播中尤为重要，并且起源于传统的幅度调制（AM）。要理解带有残余边带的幅度调制的重要性，我们首先需要掌握幅度调制的基本原理。幅度调制涉及根据信息信号（如音频或视频）变化载波波的强度（幅度）。AM的主要优点是其简单性和易于实现。然而，传统的AM信号存在一个缺点：它们占用较大的带宽。这可能导致在多个频道竞争频谱空间时的低效。为了解决这个问题，开发了带有残余边带的幅度调制。术语“残余”指的是某些仍然存在但并非完全功能或必要的东西。在VSB的情况下，这意味着在调制过程中产生的一个边带部分被过滤掉，只留下一个残余部分。这允许在减少带宽的同时，仍然保留信号中包含的基本信息。VSB信号的结构由一个主边带和一个残余边带组成。主边带承载大部分信息，而残余边带仅包含足够的信息以帮助解调过程，确保接收器能够准确重建原始信号。这种方法在效率和保真度之间取得了平衡，使其成为电视广播的理想选择，因为高质量的图像和声音至关重要。带有残余边带的幅度调制的主要应用之一是在模拟电视信号的传输中。例如，在美国，NTSC（国家电视系统委员会）标准使用VSB进行广播。这使得图像更清晰，声音质量更好，相比传统的AM方法。此外，VSB还用于数字电视（DTV）传输，进一步展示了其在现代通信系统中的多功能性和有效性。尽管数字传输方法的兴起，但理解带有残余边带的幅度调制对在广播领域工作的工程师和技术人员仍然至关重要。它作为许多现代技术的基础。此外，VSB背后的原则可以应用于其他通信技术领域，包括数据传输和卫星通信。总之，带有残余边带的幅度调制是一种重要的调制技术，它提高了信号传输的效率，同时保持了质量。其在不妥协传输信息完整性的情况下减少带宽使用的能力使其在电信世界中成为一项宝贵的工具。随着技术的不断发展，VSB的原则无疑将在塑造未来广播和全球通信系统中发挥重要作用。