modulating signal

简明释义

灯信号

英英释义

例句

1.To achieve a clearer transmission, engineers must optimize the modulating signal 调制信号 before sending it over the air.

为了实现更清晰的传输，工程师必须在将调制信号发送到空中之前进行优化。

2.In digital communications, the modulating signal 调制信号 can represent binary data through various modulation techniques.

在数字通信中，调制信号可以通过各种调制技术表示二进制数据。

3.In a basic AM radio transmitter, the audio input is the modulating signal 调制信号 that varies the amplitude of the carrier wave.

在基本的AM无线电发射器中，音频输入是调制信号，它改变载波波的幅度。

4.The modulating signal 调制信号 in this case is generated by the microphone capturing sound waves.

在这种情况下，调制信号是由麦克风捕捉声波生成的。

5.The quality of the transmitted data depends heavily on the characteristics of the modulating signal 调制信号 used in the communication system.

传输数据的质量在很大程度上依赖于通信系统中使用的调制信号的特性。

作文

In the world of communications, signals play a crucial role in the transmission of information. One important concept within this realm is the modulating signal, which serves as the basis for altering a carrier wave to convey information. Understanding the function and significance of a modulating signal is essential for grasping how modern communication systems operate. To begin with, a modulating signal can be defined as a signal that modifies another signal, typically referred to as the carrier signal. This modification allows the carrier signal to carry information over long distances. For instance, in radio broadcasting, audio signals (the modulating signal) are used to modulate a radio frequency carrier wave. The result is a signal that can be transmitted through the airwaves to receivers, where it is demodulated back into its original form for listening. The process of modulation involves varying certain characteristics of the carrier wave, such as its amplitude, frequency, or phase, based on the information contained in the modulating signal. There are various types of modulation techniques, including amplitude modulation (AM), frequency modulation (FM), and phase modulation (PM). Each of these techniques utilizes the modulating signal differently, affecting how the information is encoded and transmitted. One of the primary advantages of using a modulating signal is that it allows for efficient transmission of information over vast distances. By modulating a high-frequency carrier wave with a lower-frequency modulating signal, we can take advantage of the carrier's ability to travel further without significant loss of quality. This is particularly important in telecommunications, where maintaining signal integrity is essential for clear communication. Moreover, the use of a modulating signal enables multiple signals to be transmitted simultaneously over the same channel. This is achieved through a technique known as multiplexing, where different modulating signals are combined onto a single carrier wave. This capability is fundamental for services such as television and internet, where numerous channels and data streams coexist without interference. In addition to its applications in broadcasting and telecommunications, the concept of a modulating signal extends to various fields, including radar technology and medical imaging. In radar systems, for example, a modulating signal is used to determine the distance and speed of objects by analyzing the reflected signals. Similarly, in medical imaging, ultrasound machines utilize modulating signals to create images of internal body structures, aiding in diagnosis and treatment planning. In conclusion, the modulating signal is a fundamental component of modern communication systems, enabling the effective transmission of information across various platforms. Its ability to modify carrier waves allows for efficient communication, multiplexing of signals, and application in diverse fields. As technology continues to advance, the importance of understanding and utilizing modulating signals will only grow, making it a key concept for anyone interested in the field of communications.

在通信的世界中，信号在信息传输中起着至关重要的作用。一个重要的概念是调制信号，它作为改变载波波形以传达信息的基础。理解调制信号的功能和重要性对于掌握现代通信系统的运作至关重要。首先，调制信号可以定义为修改另一信号（通常称为载波信号）的信号。这种修改使得载波信号能够携带信息并远距离传输。例如，在广播中，音频信号（调制信号）用于调制无线电频率载波波形。结果是一个可以通过空气传播到接收器的信号，在那里它被解调回原始形式以供收听。调制过程涉及根据调制信号中包含的信息来变化载波波形的某些特性，如其幅度、频率或相位。有多种调制技术，包括幅度调制（AM）、频率调制（FM）和相位调制（PM）。每种技术都以不同的方式利用调制信号，影响信息的编码和传输方式。使用调制信号的主要优点之一是它允许信息高效地传输到遥远的地方。通过用低频的调制信号调制高频的载波波形，我们可以利用载波在不显著降低质量的情况下更远地传播。这在电信中尤其重要，因为保持信号完整性对清晰通信至关重要。此外，使用调制信号使得多个信号能够同时在同一频道上进行传输。这是通过一种称为复用的技术实现的，其中不同的调制信号被组合到单个载波波形上。这种能力是电视和互联网等服务的基础，在这些服务中，众多频道和数据流共存而不干扰。除了在广播和电信中的应用外，调制信号的概念扩展到多个领域，包括雷达技术和医学成像。在雷达系统中，例如，调制信号用于通过分析反射信号来确定物体的距离和速度。同样，在医学成像中，超声波机器利用调制信号来创建内部结构的图像，帮助诊断和治疗规划。总之，调制信号是现代通信系统的基本组成部分，使信息能够有效地通过各种平台进行传输。它修改载波波形的能力允许高效通信、信号复用以及在不同领域的应用。随着技术的不断进步，理解和利用调制信号的重要性只会增加，这使其成为任何对通信领域感兴趣的人的关键概念。