amplitude shift keying

简明释义

1. 振幅键控制; 2. 多电平调制;

英英释义

例句

1.When designing a communication system, one must consider the advantages of amplitude shift keying 幅度移键调制 for short-range applications.

在设计通信系统时，必须考虑幅度移键调制 amplitude shift keying 在短距离应用中的优势。

2.Engineers prefer amplitude shift keying 幅度移键调制 for its simplicity in implementation compared to other modulation techniques.

与其他调制技术相比，工程师更喜欢幅度移键调制 amplitude shift keying 因为它的实现简单。

3.In a basic amplitude shift keying 幅度移键调制 setup, two different amplitudes represent binary values.

在基本的幅度移键调制 amplitude shift keying 设置中，两个不同的幅度代表二进制值。

4.In digital communication systems, amplitude shift keying 幅度移键调制 is often used to transmit data over radio waves.

在数字通信系统中，幅度移键调制 amplitude shift keying 常用于通过无线电波传输数据。

5.The performance of amplitude shift keying 幅度移键调制 can be affected by noise in the transmission medium.

在传输介质中，噪声会影响幅度移键调制 amplitude shift keying 的性能。

作文

In the realm of digital communication, various modulation techniques are employed to transmit information efficiently and accurately. One such technique is amplitude shift keying, which plays a crucial role in the way data is encoded and transmitted over different media. Understanding amplitude shift keying involves delving into its principles, applications, and advantages.Amplitude shift keying (ASK) is a form of amplitude modulation that represents digital data as variations in the amplitude of a carrier wave. In simple terms, it encodes binary data by switching the amplitude of the signal between two levels: one level signifies a binary '1', while the other represents a binary '0'. This straightforward approach makes amplitude shift keying particularly appealing for certain types of communication systems.One of the primary advantages of amplitude shift keying is its simplicity. The modulation and demodulation processes are relatively uncomplicated compared to more complex techniques like phase shift keying (PSK) or frequency shift keying (FSK). This simplicity allows for easier implementation in hardware, making it a cost-effective choice for low-speed communication systems. Additionally, the straightforward nature of ASK means that it can be easily understood and applied by engineers and technicians working in the field of telecommunications.However, amplitude shift keying does have its limitations. One significant drawback is its susceptibility to noise and interference. Since the data is represented by changes in amplitude, any noise that affects the signal can lead to errors in data interpretation. This characteristic makes ASK less suitable for high-frequency or long-distance communications where signal degradation is more likely to occur. As a result, while amplitude shift keying is effective for short-range communication, such as infrared remote controls and certain types of wireless networks, it may not be the best choice for more demanding applications.Despite its limitations, amplitude shift keying finds its place in various practical applications. For instance, it is commonly used in digital data transmission systems, such as in the encoding of binary data for optical fiber communications. Moreover, ASK is often utilized in applications where bandwidth is limited, and the simplicity of the system is paramount. Examples include low-rate data modems and some forms of telemetry.In conclusion, amplitude shift keying is a fundamental modulation technique that embodies the principles of digital communication. While it may not be suitable for all scenarios due to its susceptibility to noise and interference, its simplicity and cost-effectiveness make it an attractive option for specific applications. By understanding the intricacies of amplitude shift keying, engineers and technicians can better appreciate its role in the evolving landscape of digital communication technologies. As we continue to advance in this field, the knowledge of such fundamental concepts will remain essential for future innovations in communication systems.

在数字通信领域，各种调制技术被用于高效和准确地传输信息。其中一种技术是幅度移位键控，它在数据的编码和通过不同媒介的传输中起着至关重要的作用。理解幅度移位键控需要深入探讨其原理、应用和优点。幅度移位键控（ASK）是一种幅度调制形式，通过载波波形的幅度变化来表示数字数据。简单来说，它通过在两个幅度水平之间切换信号的幅度来编码二进制数据：一个水平表示二进制“1”，而另一个表示二进制“0”。这种简单的方法使得幅度移位键控在某些类型的通信系统中特别有吸引力。幅度移位键控的主要优点之一是其简单性。与相位移位键控（PSK）或频率移位键控（FSK）等更复杂的技术相比，调制和解调过程相对简单。这种简单性使得硬件实施变得更加容易，从而使其成为低速通信系统的成本效益选择。此外，ASK的直接特性意味着工程师和技术人员在电信领域工作时可以轻松理解和应用。然而，幅度移位键控确实存在其局限性。一个显著的缺点是它易受噪声和干扰的影响。由于数据是通过幅度的变化来表示的，因此任何影响信号的噪声都可能导致数据解释中的错误。这一特性使得ASK不太适合高频或长距离通信，因为信号退化的可能性更大。因此，尽管幅度移位键控在短距离通信（如红外遥控器和某些类型的无线网络）中有效，但它可能不是更苛刻应用的最佳选择。尽管存在局限性，幅度移位键控在各种实际应用中找到了自己的位置。例如，它通常用于数字数据传输系统，例如在光纤通信中对二进制数据的编码。此外，在带宽有限且系统简单性至关重要的应用中，ASK也常常被利用。示例包括低速数据调制解调器和某些形式的遥测。总之，幅度移位键控是一种基本的调制技术，体现了数字通信的原理。尽管由于其易受噪声和干扰的影响，它可能不适合所有场景，但其简单性和成本效益使其成为特定应用的有吸引力的选择。通过理解幅度移位键控的复杂性，工程师和技术人员可以更好地欣赏其在不断发展的数字通信技术中的角色。随着我们在这一领域的不断进步，对这些基本概念的理解将继续对未来通信系统的创新至关重要。