minimum detectable signal

简明释义

最小可探测信号

英英释义

例句

1.Engineers work to reduce noise in order to lower the minimum detectable signal 最小可检测信号 threshold for better communication.

工程师们致力于减少噪声，以降低 最小可检测信号 最小可检测信号 阈值，以改善通信质量。

2.During experiments, researchers measured the minimum detectable signal 最小可检测信号 to evaluate the effectiveness of their new sensor design.

在实验过程中，研究人员测量了 最小可检测信号 最小可检测信号 以评估他们的新传感器设计的有效性。

3.The minimum detectable signal 最小可检测信号 can vary significantly based on environmental conditions and equipment used.

最小可检测信号 最小可检测信号 可以根据环境条件和使用的设备显著变化。

4.The minimum detectable signal 最小可检测信号 in optical systems is crucial for determining the sensitivity of the detection equipment.

光学系统中的 最小可检测信号 最小可检测信号 对于确定检测设备的灵敏度至关重要。

5.In radar systems, the performance is often limited by the minimum detectable signal 最小可检测信号 level, which determines how small of a target can be reliably detected.

在雷达系统中，性能通常受到 最小可检测信号 最小可检测信号 水平的限制，这决定了可以可靠检测到多小的目标。

作文

In the realm of communications and signal processing, the concept of minimum detectable signal plays a crucial role. This term refers to the smallest level of signal that can be reliably detected by a receiver or a sensor in the presence of noise. Understanding this concept is essential for engineers and scientists who design communication systems, as it directly impacts the performance and efficiency of these systems.To illustrate the significance of the minimum detectable signal, consider the scenario of radio communications. When a radio station transmits a signal, it travels through the air and encounters various forms of interference, such as atmospheric noise, man-made noise, and other signals. The receiver must be able to distinguish the desired signal from this background noise. If the signal strength falls below the minimum detectable signal threshold, the receiver will not be able to identify it, leading to poor communication quality or even complete loss of the signal.The minimum detectable signal is influenced by several factors, including the sensitivity of the receiver, the bandwidth of the signal, and the level of noise present in the environment. For instance, a highly sensitive receiver can detect weaker signals than a less sensitive one. Similarly, a wider bandwidth allows for more information to be transmitted but may also introduce more noise, affecting the minimum detectable signal.In practical applications, engineers often conduct experiments to determine the minimum detectable signal for their specific systems. This involves measuring the signal-to-noise ratio (SNR), which is the ratio of the power of the desired signal to the power of the background noise. A higher SNR indicates a clearer signal, while a lower SNR suggests that the signal is closer to the minimum detectable signal threshold.Moreover, advancements in technology have led to the development of sophisticated algorithms and techniques aimed at improving the detection of weak signals. Techniques such as matched filtering, adaptive filtering, and error correction codes are employed to enhance the ability of receivers to detect signals near the minimum detectable signal. These innovations are particularly important in fields such as radar, telecommunications, and satellite communication, where reliable signal detection is paramount.In conclusion, the concept of minimum detectable signal is fundamental in understanding how communication systems operate under the influence of noise. It serves as a benchmark for evaluating the performance of receivers and helps engineers design more efficient systems. As technology continues to evolve, the quest for detecting weaker signals will persist, driving innovation and improving the reliability of communication across various platforms. By grasping the implications of the minimum detectable signal, professionals in the field can better navigate the challenges of signal processing and enhance the effectiveness of their communication systems.

在通信和信号处理领域，最小可检测信号的概念起着至关重要的作用。该术语指的是在噪声存在的情况下，接收器或传感器能够可靠检测到的最小信号水平。理解这一概念对于设计通信系统的工程师和科学家至关重要，因为它直接影响到这些系统的性能和效率。为了说明最小可检测信号的重要性，考虑一下无线电通信的场景。当广播电台发射信号时，它通过空气传播并遇到各种形式的干扰，如大气噪声、人为噪声和其他信号。接收器必须能够将所需信号与背景噪声区分开来。如果信号强度低于最小可检测信号阈值，接收器将无法识别该信号，从而导致通信质量差甚至完全丧失信号。最小可检测信号受多个因素的影响，包括接收器的灵敏度、信号的带宽和环境中存在的噪声水平。例如，高灵敏度接收器可以检测到比低灵敏度接收器更弱的信号。同样，更宽的带宽允许传输更多信息，但也可能引入更多噪声，从而影响最小可检测信号。在实际应用中，工程师通常会进行实验以确定其特定系统的最小可检测信号。这涉及测量信噪比（SNR），即所需信号的功率与背景噪声的功率之比。较高的信噪比表示信号更清晰，而较低的信噪比则表明信号接近最小可检测信号阈值。此外，技术的进步导致开发出旨在改善弱信号检测的复杂算法和技术。匹配滤波、自适应滤波和错误纠正码等技术被用来增强接收器在接近最小可检测信号的情况下检测信号的能力。这些创新在雷达、电信和卫星通信等领域尤为重要，在这些领域，可靠的信号检测至关重要。总之，最小可检测信号的概念是理解通信系统如何在噪声影响下运行的基础。它作为评估接收器性能的基准，并帮助工程师设计更高效的系统。随着技术的不断发展，检测更弱信号的追求将持续，推动创新并提高各个平台通信的可靠性。通过掌握最小可检测信号的含义，相关领域的专业人员可以更好地应对信号处理的挑战，提高其通信系统的有效性。