modulation index

简明释义

灯指数

英英释义

例句

1.Engineers must calculate the modulation index to optimize the performance of communication systems.

工程师必须计算调制指数以优化通信系统的性能。

2.The modulation index is crucial in determining the bandwidth of a frequency modulated signal.

在确定频率调制信号的带宽时，调制指数是至关重要的。

3.The modulation index can be adjusted to improve the clarity of the transmitted audio.

可以调整调制指数以提高传输音频的清晰度。

4.In AM radio broadcasting, the modulation index affects the depth of modulation.

在AM广播中，调制指数影响调制的深度。

5.A higher modulation index generally results in better signal quality but requires more bandwidth.

更高的调制指数通常会导致更好的信号质量，但需要更多的带宽。

作文

In the realm of communication systems, the concept of modulation index plays a crucial role in determining the efficiency and quality of signal transmission. The modulation index, defined as the ratio of the amplitude of the modulating signal to the amplitude of the carrier signal, is fundamental for various types of modulation techniques, including amplitude modulation (AM) and frequency modulation (FM). Understanding this parameter is essential for engineers and technicians who design and implement communication systems, as it directly influences the bandwidth and power requirements of the transmitted signal.When discussing amplitude modulation, the modulation index is particularly significant. A higher modulation index indicates that the amplitude of the modulating signal is large relative to the carrier signal, resulting in a more pronounced variation in the amplitude of the output signal. This can lead to better signal reception and clarity but may also cause distortion if the index exceeds a certain threshold. Therefore, engineers must find a balance when setting the modulation index to ensure optimal performance without compromising signal integrity.Similarly, in frequency modulation, the modulation index determines how much the frequency of the carrier wave varies in response to the modulating signal. A larger modulation index results in a wider frequency deviation, which can improve the robustness of the signal against noise and interference. However, it also requires more bandwidth, which is a critical consideration in crowded frequency bands. Consequently, understanding the implications of the modulation index allows for better planning and utilization of available spectrum resources.Moreover, the modulation index not only affects the technical aspects of signal transmission but also has practical implications in real-world applications. For instance, in broadcasting, radio stations must carefully choose their modulation index to ensure that their signals can be received clearly across vast distances without causing interference with other stations. In digital communication systems, the modulation index can influence data rates and error rates, making it a vital factor in achieving reliable data transfer.In conclusion, the modulation index is a key parameter in the field of communications, impacting both the theoretical and practical aspects of signal modulation. By understanding and effectively managing the modulation index, engineers can enhance the performance of communication systems, ensuring that they meet the demands of modern users while maximizing efficiency and minimizing interference. As technology continues to evolve, the importance of mastering concepts like the modulation index will only grow, highlighting the need for ongoing education and adaptation in this dynamic field.

在通信系统领域，调制指数的概念在决定信号传输的效率和质量方面起着至关重要的作用。调制指数被定义为调制信号的幅度与载波信号的幅度之比，它是各种调制技术的基础，包括幅度调制（AM）和频率调制（FM）。理解这个参数对于设计和实施通信系统的工程师和技术人员至关重要，因为它直接影响到传输信号的带宽和功率需求。在讨论幅度调制时，调制指数尤其重要。较高的调制指数表明调制信号的幅度相对于载波信号较大，从而导致输出信号的幅度发生更明显的变化。这可以提高信号接收和清晰度，但如果指数超过某个阈值，也可能导致失真。因此，工程师在设置调制指数时必须找到平衡，以确保最佳性能而不妨碍信号完整性。同样，在频率调制中，调制指数决定了载波波的频率响应调制信号的变化程度。较大的调制指数会导致频率偏移更大，这可以提高信号抵抗噪声和干扰的能力。然而，它也需要更多的带宽，这是在拥挤的频谱中一个关键的考虑因素。因此，理解调制指数的影响可以更好地规划和利用可用的频谱资源。此外，调制指数不仅影响信号传输的技术方面，还在实际应用中具有实际意义。例如，在广播中，电台必须仔细选择其调制指数，以确保其信号能够在广阔的距离内清晰接收，而不会干扰其他电台。在数字通信系统中，调制指数可以影响数据速率和错误率，使其成为实现可靠数据传输的重要因素。总之，调制指数是通信领域的一个关键参数，影响信号调制的理论和实际方面。通过理解和有效管理调制指数，工程师可以增强通信系统的性能，确保其满足现代用户的需求，同时最大限度地提高效率并减少干扰。随着技术的不断发展，掌握像调制指数这样的概念的重要性只会增加，这突显了在这个动态领域中持续教育和适应的必要性。