frequency deviation

简明释义

频率偏移频偏

英英释义

例句

1.Engineers measured the frequency deviation 频率偏差 during the testing of the new communication device.

工程师在测试新通信设备时测量了频率偏差。

2.The radio signal showed a significant frequency deviation 频率偏差 from the expected value.

无线电信号显示出与预期值有显著的频率偏差。

3.In radar systems, monitoring frequency deviation 频率偏差 is crucial for accurate target detection.

在雷达系统中，监测频率偏差对准确目标检测至关重要。

4.A large frequency deviation 频率偏差 can lead to poor audio quality in sound systems.

较大的频率偏差可能导致音响系统的音质不佳。

5.The technician adjusted the settings to minimize the frequency deviation 频率偏差 in the transmission.

技术员调整设置以最小化传输中的频率偏差。

作文

In the realm of telecommunications and signal processing, the concept of frequency deviation (频率偏差) plays a pivotal role in ensuring the clarity and accuracy of transmitted signals. Frequency deviation refers to the variation of a signal's frequency from its nominal or expected value. This phenomenon is particularly significant in frequency modulation (FM) systems, where the information is encoded in the frequency changes of the carrier wave. Understanding frequency deviation is essential for engineers and technicians who work with radio frequencies, as it directly impacts the quality of communication. To comprehend the importance of frequency deviation, one must first grasp how FM works. In an FM system, the amplitude of the carrier wave remains constant while its frequency varies according to the input signal. The extent of this variation is defined as the frequency deviation, which can be influenced by various factors such as modulation index and signal strength. A larger frequency deviation typically results in a more robust signal that is less susceptible to noise and interference, thus providing clearer audio or data transmission. However, excessive frequency deviation can lead to distortion and bandwidth issues. Each FM signal occupies a certain bandwidth determined by the maximum frequency deviation. If multiple signals operate within close proximity on the frequency spectrum, they may interfere with each other, leading to degraded performance. Therefore, it is crucial for engineers to carefully calculate and manage frequency deviation to optimize signal integrity while minimizing interference. In practice, the measurement of frequency deviation is often performed using specialized equipment such as spectrum analyzers. These devices allow technicians to visualize the frequency spectrum and identify any deviations from the expected signal. By analyzing the frequency deviation, they can make necessary adjustments to the transmitter or receiver settings to improve overall performance. Moreover, frequency deviation is not limited to traditional radio communications. It also plays a significant role in digital communication systems, including cellular networks and satellite communications. In these systems, maintaining precise frequency deviation is vital for ensuring reliable data transfer and minimizing errors. As technology continues to evolve, the importance of understanding and managing frequency deviation will only increase, particularly with the advent of new communication standards and protocols.In conclusion, frequency deviation (频率偏差) is a fundamental concept in the field of telecommunications that affects the quality and reliability of signal transmission. By mastering the principles of frequency deviation, professionals in the industry can enhance their ability to design and implement effective communication systems. As we continue to rely on advanced technologies for our daily communications, a thorough understanding of frequency deviation will remain essential for achieving optimal performance in various applications.

在电信和信号处理领域，频率偏差的概念在确保传输信号的清晰度和准确性方面发挥着关键作用。频率偏差指的是信号频率相对于其标称值或预期值的变化。这种现象在频率调制（FM）系统中尤为重要，其中信息通过载波波的频率变化进行编码。理解频率偏差对于从事无线电频率工作的工程师和技术人员至关重要，因为它直接影响通信的质量。要理解频率偏差的重要性，首先必须掌握FM的工作原理。在FM系统中，载波波的幅度保持恒定，而其频率根据输入信号变化。这种变化的程度被定义为频率偏差，可以受到调制指数和信号强度等多种因素的影响。较大的频率偏差通常会导致更强健的信号，使其不易受到噪声和干扰，从而提供更清晰的音频或数据传输。然而，过大的频率偏差可能导致失真和带宽问题。每个FM信号占据一定的带宽，该带宽由最大频率偏差决定。如果多个信号在频谱上相互靠近工作，它们可能会相互干扰，导致性能下降。因此，工程师必须仔细计算和管理频率偏差，以优化信号完整性，同时最小化干扰。在实践中，频率偏差的测量通常使用专用设备，如频谱分析仪。这些设备允许技术人员可视化频率谱并识别任何偏离预期信号的情况。通过分析频率偏差，他们可以对发射器或接收器设置进行必要的调整，以改善整体性能。此外，频率偏差不仅限于传统的无线电通信。它在数字通信系统中也起着重要作用，包括蜂窝网络和卫星通信。在这些系统中，保持精确的频率偏差对于确保可靠的数据传输和最小化错误至关重要。随着技术的不断发展，理解和管理频率偏差的重要性只会增加，特别是在新通信标准和协议的出现之际。总之，频率偏差是电信领域的一个基本概念，影响信号传输的质量和可靠性。通过掌握频率偏差的原理，行业专业人士可以增强设计和实施有效通信系统的能力。随着我们继续依赖先进技术进行日常通信，对频率偏差的深入理解将继续是实现各种应用中最佳性能的关键。