coherent signal

简明释义

相干信号

英英释义

例句

1.During the experiment, researchers observed a coherent signal that confirmed their hypothesis about wave interference.

在实验过程中，研究人员观察到一个相干信号，证实了他们关于波干涉的假设。

2.The telecommunications company upgraded its infrastructure to ensure a coherent signal for all users.

这家电信公司升级了基础设施，以确保所有用户都能获得相干信号。

3.In quantum mechanics, a coherent signal can indicate the presence of entangled particles.

在量子力学中，相干信号可以指示纠缠粒子的存在。

4.The radar system was able to detect a coherent signal from the incoming aircraft, allowing for accurate tracking.

雷达系统能够探测到来自来袭飞机的相干信号，从而实现精确跟踪。

5.To achieve better sound quality, the audio engineer ensured that the microphones captured a coherent signal.

为了获得更好的音质，音频工程师确保麦克风捕捉到相干信号。

作文

In the realm of communication and signal processing, the term coherent signal refers to a type of signal that maintains a constant phase relationship with a reference signal. This characteristic is crucial in various applications, including telecommunications, radar systems, and audio processing. To better understand what a coherent signal is, we can explore its properties, significance, and applications in modern technology.Firstly, one of the key features of a coherent signal is its ability to exhibit a stable phase relationship over time. This means that the waveforms of the signal and the reference signal align consistently, allowing for accurate information transfer. For instance, when two signals are coherent, they can interfere constructively or destructively, which is essential in techniques such as interferometry. This property is utilized in various scientific fields to make precise measurements, including astronomy and metrology.Moreover, coherent signals are vital in digital communication systems. In these systems, data is often transmitted using modulated signals, where the information is encoded in the amplitude, frequency, or phase of the carrier wave. Coherence ensures that the receiver can accurately demodulate the signal, extracting the original information without significant loss or distortion. This is particularly important in environments where noise and interference are prevalent, as it allows for clearer signal reception and improved overall communication quality.Additionally, the concept of coherence plays a significant role in radar technology. In radar systems, coherent signals are employed to detect objects and measure their distance and speed. By sending out a coherent pulse and analyzing the reflected signal, radar systems can determine the location and movement of targets with remarkable precision. This capability is crucial for applications ranging from air traffic control to military operations, where accurate tracking is essential.The significance of coherent signals extends beyond technical applications; it also influences our daily lives. For example, in audio processing, coherent signals help in noise cancellation technologies. By generating a coherent anti-noise signal that is phase-inverted relative to the unwanted sound, devices can effectively reduce background noise, enhancing the listening experience for users. This technology is widely used in headphones and smart speakers, allowing people to enjoy music and podcasts without distractions.In conclusion, understanding the concept of coherent signals is essential for grasping how modern communication and technology function. Their stable phase relationship enables accurate information transfer, precise measurements, and enhanced audio experiences. As technology continues to evolve, the importance of coherent signals will likely grow, paving the way for more advanced applications and innovations in various fields. Therefore, recognizing the role of coherent signals not only enriches our knowledge of signal processing but also highlights their impact on everyday life and future technological advancements.

在通信和信号处理领域，术语相干信号指的是一种与参考信号保持恒定相位关系的信号。这一特性在各种应用中至关重要，包括电信、雷达系统和音频处理。为了更好地理解什么是相干信号，我们可以探讨其特性、重要性以及在现代技术中的应用。首先，相干信号的一个关键特征是它能够在时间上表现出稳定的相位关系。这意味着信号和参考信号的波形始终一致，从而允许准确的信息传输。例如，当两个信号是相干的时，它们可以进行相干或消相干干涉，这在干涉测量等技术中至关重要。这一特性在多个科学领域得到应用，以进行精确测量，包括天文学和计量学。此外，相干信号在数字通信系统中至关重要。在这些系统中，数据通常通过调制信号进行传输，其中信息编码在载波波的幅度、频率或相位中。相干性确保接收器能够准确解调信号，提取原始信息而不会显著损失或失真。这在噪声和干扰普遍存在的环境中特别重要，因为它可以提高信号接收的清晰度和整体通信质量。此外，相干性的概念在雷达技术中也扮演着重要角色。在雷达系统中，相干信号被用于检测物体并测量其距离和速度。通过发送一个相干脉冲并分析反射信号，雷达系统可以以惊人的精度确定目标的位置和运动。这一能力对于从空中交通管制到军事行动等应用至关重要，在这些应用中，准确跟踪是必不可少的。相干信号的重要性不仅限于技术应用；它还影响着我们的日常生活。例如，在音频处理中，相干信号有助于噪声消除技术。通过生成一个与不需要的声音相位反转的相干反噪声信号，设备可以有效减少背景噪声，提高用户的听觉体验。这项技术广泛应用于耳机和智能扬声器，使人们能够在没有干扰的情况下享受音乐和播客。总之，理解相干信号的概念对于掌握现代通信和技术的运作至关重要。它们的稳定相位关系使得准确的信息传输、精确的测量和增强的音频体验成为可能。随着技术的不断发展，相干信号的重要性可能会进一步增长，为各个领域的更先进应用和创新铺平道路。因此，认识到相干信号的作用不仅丰富了我们对信号处理的知识，也突显了它们对日常生活和未来技术进步的影响。