noise-temperature ratio

简明释义

噪声温度比

英英释义

例句

1.Engineers often measure the noise-temperature ratio (噪声温度比) to assess the quality of a radio frequency system.

工程师们通常测量噪声温度比（噪声温度比）以评估射频系统的质量。

2.A high noise-temperature ratio (噪声温度比) can lead to increased background noise in audio equipment.

高噪声温度比（噪声温度比）会导致音频设备中背景噪声增加。

3.To enhance sensitivity, the noise-temperature ratio (噪声温度比) must be minimized in the design of the antenna.

为了提高灵敏度，在天线设计中必须最小化噪声温度比（噪声温度比）。

4.In satellite communications, a low noise-temperature ratio (噪声温度比) is crucial for clear signal transmission.

在卫星通信中，低噪声温度比（噪声温度比）对于清晰的信号传输至关重要。

5.The receiver's performance can be significantly improved by optimizing the noise-temperature ratio (噪声温度比).

通过优化噪声温度比（噪声温度比），接收器的性能可以显著提高。

作文

Understanding the concept of noise-temperature ratio is essential for anyone involved in fields such as telecommunications, electronics, and signal processing. The noise-temperature ratio is a measure that compares the level of noise in a system to the temperature at which that noise is generated. In simpler terms, it helps us understand how much unwanted noise is present in relation to the thermal energy of the system. This concept is crucial because noise can significantly affect the performance of electronic devices and communication systems.To grasp the importance of the noise-temperature ratio, we first need to comprehend what noise is in an electronic context. Noise refers to random fluctuations in electrical signals, which can obscure the information being transmitted. These fluctuations can arise from various sources, including thermal agitation of charge carriers in resistors and other passive components. As the temperature increases, the level of thermal noise also increases, leading to a higher noise floor in the system.The noise-temperature ratio is often expressed in decibels (dB) and is calculated by comparing the actual noise power to the theoretical noise power at a given temperature. A lower noise-temperature ratio indicates a cleaner signal with less interference, which is desirable in most applications. For instance, in radio communications, a low noise-temperature ratio means that the receiver can pick up weak signals more effectively, leading to clearer audio and data transmission.In practical applications, engineers strive to minimize the noise-temperature ratio in their designs. This can be achieved through various methods, such as using high-quality components, implementing shielding techniques, and optimizing circuit layouts. Additionally, understanding the noise-temperature ratio allows engineers to predict how different environmental conditions, such as temperature changes, will affect system performance. For example, in satellite communication, where signals travel vast distances, maintaining a low noise-temperature ratio is vital for ensuring reliable data transmission.Moreover, the noise-temperature ratio plays a significant role in the design of amplifiers and receivers. By analyzing the noise-temperature ratio, engineers can determine the optimal operating conditions for these devices, ensuring they perform efficiently even in the presence of noise. This analysis is particularly important in sensitive applications like medical imaging and scientific research, where accurate signal detection is paramount.In conclusion, the noise-temperature ratio is a critical parameter that influences the performance of electronic systems. A thorough understanding of this concept enables engineers and technicians to design better systems that can operate effectively in noisy environments. As technology continues to advance, the significance of managing noise will only grow, making the noise-temperature ratio an essential consideration in the development of future electronic devices and communication systems.

理解噪声温度比的概念对于任何从事电信、电子和信号处理领域的人来说都是至关重要的。噪声温度比是一个测量值，它比较系统中的噪声水平与产生该噪声的温度。简单来说，它帮助我们理解在系统的热能相对于不必要噪声的情况下，噪声的存在程度。这个概念至关重要，因为噪声会显著影响电子设备和通信系统的性能。要理解噪声温度比的重要性，我们首先需要理解在电子环境中噪声是什么。噪声指的是电信号中的随机波动，这些波动可能会遮蔽正在传输的信息。这些波动可以来自各种来源，包括电阻器和其他被动元件中载流子的热激发。随着温度的升高，热噪声的水平也会增加，导致系统中的噪声底线升高。噪声温度比通常以分贝（dB）表示，并通过比较实际噪声功率与给定温度下的理论噪声功率来计算。较低的噪声温度比表示信号更干净，干扰更少，这是大多数应用所期望的。例如，在无线电通信中，低噪声温度比意味着接收器能够更有效地接收微弱信号，从而实现更清晰的音频和数据传输。在实际应用中，工程师努力在设计中最小化噪声温度比。这可以通过多种方法实现，例如使用高质量组件、实施屏蔽技术以及优化电路布局。此外，了解噪声温度比使工程师能够预测不同环境条件（如温度变化）将如何影响系统性能。例如，在卫星通信中，信号经过广阔的距离传播，保持低噪声温度比对于确保可靠的数据传输至关重要。此外，噪声温度比在放大器和接收器的设计中也发挥着重要作用。通过分析噪声温度比，工程师可以确定这些设备的最佳工作条件，确保它们即使在噪声存在的情况下也能高效运行。这种分析在医学成像和科学研究等敏感应用中尤为重要，因为准确的信号检测至关重要。总之，噪声温度比是影响电子系统性能的关键参数。对这一概念的透彻理解使工程师和技术人员能够设计出更好的系统，这些系统能够在嘈杂的环境中有效运行。随着技术的不断进步，管理噪声的重要性只会增加，使得噪声温度比成为未来电子设备和通信系统开发中的一个重要考虑因素。