angle modulation

简明释义

1. 调角; 2. 调角调频或调相;

英英释义

例句

1.Understanding angle modulation is crucial for engineers working on satellite communication systems.

理解角度调制对于从事卫星通信系统工作的工程师至关重要。

2.The efficiency of angle modulation can lead to better bandwidth utilization in communication systems.

在通信系统中，角度调制的效率可以导致更好的带宽利用。

3.In radio communication, angle modulation is used to encode information in the frequency or phase of a carrier wave.

在无线通信中，角度调制用于在载波波的频率或相位中编码信息。

4.Digital phase shift keying (PSK) is a form of angle modulation that is widely used in digital communications.

数字相位移键控（PSK）是一种广泛应用于数字通信的角度调制形式。

5.FM radio is a popular example of angle modulation, where the frequency of the signal varies with the audio input.

调频广播是一个流行的角度调制示例，其中信号的频率随着音频输入而变化。

作文

Angle modulation is a fundamental concept in the field of communications, particularly in the realm of analog signals. It refers to the technique of varying the angle of a carrier wave in accordance with the information signal. This modulation method encompasses two primary types: frequency modulation (FM) and phase modulation (PM). Both methods are widely used in various applications, including radio broadcasting, television transmission, and mobile communications.To better understand angle modulation (角度调制), it is essential to grasp how it differs from amplitude modulation (AM). In AM, the amplitude of the carrier wave is varied, while in angle modulation (角度调制), it is the angle of the wave that changes. This change in angle can be represented mathematically, showing how the instantaneous frequency or phase of the carrier wave is altered by the modulating signal.One of the most significant advantages of angle modulation (角度调制) is its resilience to noise and interference. Since the information is encoded in the frequency or phase of the signal rather than its amplitude, angle modulation (角度调制) can maintain a clearer and more reliable transmission over long distances. This characteristic makes FM particularly popular for music broadcasts, as it provides higher fidelity sound and reduces the impact of static and other disturbances.In practical applications, angle modulation (角度调制) is implemented in various systems. For instance, FM radio stations transmit audio signals by altering the frequency of the carrier wave, allowing listeners to enjoy high-quality sound without significant degradation. Similarly, in phase modulation, the phase of the carrier wave is adjusted to convey digital data, which is crucial for modern communication systems like cellular networks.Furthermore, angle modulation (角度调制) plays a vital role in the development of advanced technologies such as spread spectrum communication and digital modulation schemes. These technologies enhance the security and efficiency of data transmission, making them indispensable in today's digital age.In conclusion, angle modulation (角度调制) is an essential technique in the field of communications that allows for effective transmission of information through variations in the carrier wave's angle. Its advantages over amplitude modulation, particularly in terms of noise resistance and sound quality, have made it a preferred choice for many broadcasting and communication applications. As technology continues to evolve, the importance of angle modulation (角度调制) will only grow, paving the way for even more innovative solutions in the world of telecommunications.

角度调制是通信领域中的一个基本概念，特别是在模拟信号的范围内。它指的是根据信息信号变化载波波的角度的技术。这种调制方法包括两种主要类型：频率调制（FM）和相位调制（PM）。这两种方法广泛应用于各种场合，包括广播、电视传输和移动通信。为了更好地理解角度调制，必须掌握它与幅度调制（AM）的区别。在AM中，载波波的幅度是变化的，而在角度调制中，变化的是波的角度。这种角度的变化可以用数学方式表示，显示出载波的瞬时频率或相位如何被调制信号改变。角度调制的一个显著优点是其对噪声和干扰的抗性。由于信息编码在信号的频率或相位中而不是幅度中，角度调制能够在长距离传输中保持更清晰、更可靠的传输。这一特性使得FM特别适用于音乐广播，因为它提供了更高保真的声音并减少静电和其他干扰的影响。在实际应用中，角度调制被实施在各种系统中。例如，FM广播电台通过改变载波波的频率来传输音频信号，使听众能够享受高质量的声音而没有显著的降级。同样，在相位调制中，载波波的相位被调整以传输数字数据，这对于现代通信系统如蜂窝网络至关重要。此外，角度调制在先进技术的发展中发挥着重要作用，例如扩频通信和数字调制方案。这些技术增强了数据传输的安全性和效率，使其在当今数字时代不可或缺。总之，角度调制是一种在通信领域中至关重要的技术，通过变化载波波的角度有效地传输信息。它相对于幅度调制的优势，尤其是在噪声抵抗和声音质量方面，使其成为许多广播和通信应用的首选。随着技术的不断进步，角度调制的重要性只会增加，为电信领域带来更多创新的解决方案。