double modulation

简明释义

双重灯

英英释义

例句

1.Using double modulation 双重调制, the team was able to transmit high-definition video without loss of quality.

通过使用双重调制 double modulation，团队能够在不损失质量的情况下传输高清晰度视频。

2.The radio engineer explained how the technique of double modulation 双重调制 allows for clearer signal transmission over long distances.

无线电工程师解释了如何通过双重调制 double modulation 技术实现更清晰的信号传输，尤其是在远距离时。

3.The concept of double modulation 双重调制 is crucial in modern telecommunication systems.

在现代电信系统中，双重调制 double modulation 的概念至关重要。

4.In digital communication, double modulation 双重调制 can enhance data security by encoding information twice.

在数字通信中，双重调制 double modulation 可以通过对信息进行两次编码来增强数据安全性。

5.The audio engineer utilized double modulation 双重调制 to create a richer sound experience in the concert.

音频工程师利用双重调制 double modulation 在音乐会上创造了更丰富的声音体验。

作文

In the realm of communication and signal processing, the term double modulation refers to a technique where two distinct modulation processes are employed to encode information onto a carrier signal. This method is particularly useful in enhancing the efficiency and quality of data transmission over various mediums. To better understand double modulation, it is essential to first grasp the basics of modulation itself.Modulation is the process of varying one or more properties of a periodic waveform, known as the carrier signal, with respect to a modulating signal that contains the information to be transmitted. The most common forms of modulation are amplitude modulation (AM) and frequency modulation (FM). In AM, the amplitude of the carrier wave is varied in accordance with the information signal, while in FM, it is the frequency of the carrier that is altered.However, relying on a single modulation technique can sometimes lead to limitations in terms of bandwidth and signal robustness. This is where double modulation comes into play. By utilizing two different modulation techniques simultaneously, it becomes possible to achieve a higher data rate and improved performance under challenging conditions.For example, consider a scenario where an audio signal is transmitted using both AM and FM. The audio signal can be modulated onto the amplitude of one carrier wave while another carrier wave carries the same audio signal but modulated in frequency. This dual approach allows for greater resilience against noise and interference, which are common challenges in communication systems. Furthermore, double modulation can also facilitate more efficient use of available bandwidth, as it allows for multiple signals to coexist within the same frequency range without significant degradation of quality.The applications of double modulation are vast and varied. In the field of telecommunications, this technique is often employed in satellite communications and digital broadcasting. For instance, modern digital television broadcasts frequently utilize double modulation to ensure high-quality video and audio transmission even in less-than-ideal reception conditions. Similarly, in mobile communications, double modulation can enhance the performance of cellular networks, enabling clearer calls and faster data transfer rates.Moreover, the concept of double modulation is not limited to just audio and video signals. It can also be applied in data communication protocols, where data packets are modulated using two different methods to ensure reliable transmission over the internet. By combining techniques such as phase shift keying (PSK) with quadrature amplitude modulation (QAM), network engineers can optimize the transfer of information, leading to faster and more reliable internet connections.In conclusion, double modulation is a powerful technique that leverages the strengths of multiple modulation methods to enhance communication systems. By improving data transmission efficiency and robustness, it plays a crucial role in various applications, from telecommunications to broadcasting and beyond. As technology continues to evolve, the importance of understanding and implementing double modulation will only grow, paving the way for more advanced and reliable communication solutions in the future.

在通信和信号处理领域，术语双重调制指的是一种技术，其中采用两种不同的调制过程将信息编码到载波信号上。这种方法在提高各种媒介上数据传输的效率和质量方面尤其有用。要更好地理解双重调制，首先需要掌握调制本身的基本知识。调制是改变一个或多个周期波形的属性的过程，称为载波信号，相对于包含要传输的信息的调制信号。最常见的调制形式是幅度调制（AM）和频率调制（FM）。在AM中，载波波形的幅度根据信息信号变化，而在FM中，是载波的频率被改变。然而，依赖单一的调制技术有时会导致带宽和信号鲁棒性方面的限制。这就是双重调制发挥作用的地方。通过同时利用两种不同的调制技术，可以实现更高的数据传输速率和在挑战条件下的更好性能。例如，考虑一个场景，其中音频信号通过AM和FM同时传输。音频信号可以调制到一个载波波形的幅度上，而另一个载波波形则承载同样的音频信号，但以频率进行调制。这种双重方法允许更强的抗噪声和干扰能力，这些都是通信系统中常见的挑战。此外，双重调制还可以促进可用带宽的更有效使用，因为它允许多个信号在相同的频率范围内共存，而不会显著降低质量。双重调制的应用广泛且多样。在电信领域，这种技术通常用于卫星通信和数字广播。例如，现代数字电视广播经常利用双重调制来确保即使在不理想的接收条件下也能高质量地传输视频和音频。同样，在移动通信中，双重调制可以增强蜂窝网络的性能，使通话更清晰，数据传输速度更快。此外，双重调制的概念不仅限于音频和视频信号。它还可以应用于数据通信协议，其中数据包使用两种不同的方法进行调制，以确保通过互联网可靠传输。通过将相位键控（PSK）与正交振幅调制（QAM）结合，网络工程师可以优化信息传输，从而实现更快和更可靠的互联网连接。总之，双重调制是一种强大的技术，它利用多种调制方法的优势来增强通信系统。通过提高数据传输效率和鲁棒性，它在从电信到广播及其他领域的各种应用中发挥着至关重要的作用。随着技术的不断发展，理解和实施双重调制的重要性只会增加，为未来更先进和可靠的通信解决方案铺平道路。