heterodyning

简明释义

英[ˈhetərəʊˌdaɪnɪŋ]美[ˈhetərədaɪnɪŋ]

v. （通过交变无线电信号）产生外差效果（heterodyne 的现在分词）

英英释义

单词用法

同义词

反义词

例句

1.The second, we summarize the optical heterodyning modulation technology, and calculate the spectrum of optical mm-wave signal generated by this modulation technology.

②总结了光外差调制技术，理论推导了利用光外差调制技术产生的光载毫米波信号的频谱结构。

2.The second, we summarize the optical heterodyning modulation technology, and calculate the spectrum of optical mm-wave signal generated by this modulation technology.

②总结了光外差调制技术，理论推导了利用光外差调制技术产生的光载毫米波信号的频谱结构。

3.The use of heterodyning in optical communications helps in managing bandwidth efficiently.

在光通信中使用异频混合有助于有效管理带宽。

4.Engineers often rely on heterodyning techniques to improve signal clarity in audio devices.

工程师们常常依赖异频混合技术来提高音频设备的信号清晰度。

5.In telecommunications, heterodyning is essential for mixing different frequency signals to achieve desired outputs.

在电信中，异频混合对于混合不同频率信号以实现期望输出至关重要。

6.The radio receiver uses heterodyning to convert high-frequency signals into lower frequencies for easier processing.

收音机接收器使用异频混合将高频信号转换为较低频率，以便更容易处理。

7.The principle of heterodyning allows for the amplification of weak signals in radar technology.

在雷达技术中，异频混合原理允许对微弱信号进行放大。

作文

In the realm of telecommunications and signal processing, the concept of heterodyning plays a pivotal role in how we transmit and receive information. At its core, heterodyning refers to the process of mixing two different frequencies to produce new frequencies that are more manageable for processing. This technique is essential in various applications, including radio broadcasting, radar technology, and even in modern smartphones. The term itself originates from the Greek words 'heteros,' meaning different, and 'dynamis,' meaning power or force. To understand heterodyning, one must first grasp the basics of wave frequencies. Every signal, whether it be audio, video, or data, operates at a certain frequency. In many cases, these frequencies can be too high or too low for effective transmission or reception. This is where heterodyning becomes invaluable. By combining a signal with a second frequency, known as the local oscillator, we can create new frequencies that fall within a more suitable range. These new frequencies, often referred to as intermediate frequencies (IF), can then be amplified and processed more easily.For example, consider a radio receiver. When tuning into a specific station, the radio uses heterodyning to mix the incoming radio frequency signal with a local oscillator frequency. The result is an intermediate frequency that can be filtered and amplified to extract the desired audio content. Without heterodyning, the radio would struggle to isolate and amplify the weak signals broadcasted from distant stations.The advantages of heterodyning extend beyond just radio receivers. In radar systems, heterodyning allows for the detection of objects by mixing the transmitted signal with the reflected signal from an object. This technique enables precise measurements of distance and speed, which are crucial for navigation and safety in aviation and maritime operations.Moreover, heterodyning is not limited to analog systems; it has also found applications in digital signal processing. In modern communications, digital signals can be modulated and demodulated using heterodyning techniques, allowing for efficient data transmission over various media, including fiber optics and wireless networks.In conclusion, heterodyning is a fundamental concept in the field of telecommunications that facilitates the effective processing of signals. By mixing different frequencies to create intermediate frequencies, heterodyning enhances our ability to communicate, navigate, and interact with technology. As we continue to advance in the age of information, understanding and utilizing heterodyning will remain essential for future innovations in communication technologies.

在电信和信号处理领域，异频混合的概念在我们传输和接收信息的过程中发挥着关键作用。异频混合本质上是指将两种不同的频率混合以产生更易于处理的新频率的过程。这一技术在各种应用中至关重要，包括广播、雷达技术，甚至现代智能手机。这个术语源自希腊词“heteros”，意为不同，以及“dynamis”，意为力量或能量。要理解异频混合，首先必须掌握波频率的基础知识。每个信号，无论是音频、视频还是数据，都在某个特定的频率下运行。在许多情况下，这些频率可能过高或过低，不利于有效的传输或接收。这就是异频混合变得不可或缺的地方。通过将信号与第二个频率（称为本地振荡器）结合，我们可以创建新的频率，这些频率更加适合于处理。这些新频率通常被称为中频（IF），可以更容易地放大和处理。例如，考虑一个收音机。当调谐到特定电台时，收音机使用异频混合将接收到的无线电频率信号与本地振荡器频率混合。结果是一个中频信号，可以过滤和放大，以提取所需的音频内容。如果没有异频混合，收音机将难以隔离和放大来自遥远电台的微弱信号。异频混合的优势不仅限于收音机接收器。在雷达系统中，异频混合允许通过将发射信号与从物体反射回来的信号混合来检测物体。这一技术使得对距离和速度的精确测量成为可能，这对于航空和海事操作中的导航和安全至关重要。此外，异频混合并不限于模拟系统；它也在数字信号处理中找到了应用。在现代通信中，数字信号可以使用异频混合技术进行调制和解调，从而实现通过各种媒介（包括光纤和无线网络）进行高效的数据传输。总之，异频混合是电信领域的一个基本概念，它促进了信号的有效处理。通过混合不同的频率以创建中频，异频混合增强了我们沟通、导航和与技术互动的能力。随着我们在信息时代的不断进步，理解和利用异频混合将继续对未来通信技术的创新至关重要。