lowest useful high frequency

简明释义

最低可用高频率

英英释义

例句

1.The lowest useful high frequency 最低有用高频率 for this application is crucial for effective data transmission.

此应用程序的 最低有用高频率 最低有用高频率 对有效数据传输至关重要。

2.The lowest useful high frequency 最低有用高频率 can vary depending on atmospheric conditions and time of day.

根据大气条件和一天中的时间，最低有用高频率 最低有用高频率 可能会有所不同。

3.During testing, we measured the lowest useful high frequency 最低有用高频率 to ensure the equipment met specifications.

在测试过程中，我们测量了 最低有用高频率 最低有用高频率 以确保设备符合规格。

4.In radio communications, the lowest useful high frequency 最低有用高频率 is often used to determine the best frequency for long-distance transmission.

在无线电通信中，最低有用高频率 最低有用高频率 通常用于确定最佳的远距离传输频率。

5.Engineers must identify the lowest useful high frequency 最低有用高频率 to optimize the performance of the communication system.

工程师必须识别出 最低有用高频率 最低有用高频率 以优化通信系统的性能。

作文

In the realm of telecommunications and signal processing, the term lowest useful high frequency refers to the minimum frequency at which a signal can be effectively transmitted and received without significant loss of quality or integrity. Understanding this concept is crucial for engineers and technicians who work with various forms of communication technologies, including radio, television, and internet data transmission. The lowest useful high frequency plays a pivotal role in determining the performance of these systems, as it sets the threshold for effective communication over a given medium.To elaborate further, let's consider how frequencies are categorized. Generally, frequencies are divided into several bands, such as low frequency (LF), medium frequency (MF), high frequency (HF), very high frequency (VHF), and ultra-high frequency (UHF). The lowest useful high frequency typically falls within the high-frequency range, which spans from 3 MHz to 30 MHz. This range is particularly significant because it allows for long-distance communication by enabling signals to bounce off the ionosphere, making it possible to connect with distant stations.The importance of identifying the lowest useful high frequency cannot be overstated. For instance, when designing a communication system, engineers must ensure that the chosen frequencies can penetrate obstacles and maintain clarity across various distances. If the frequency is too low, the signal may become weak and susceptible to interference, while if it is too high, it may not propagate effectively, leading to poor reception. Therefore, determining the lowest useful high frequency is essential for optimizing the performance of communication devices.Moreover, the lowest useful high frequency varies depending on environmental factors and the specific application. For example, in urban areas with many buildings, lower frequencies may be more effective due to their ability to diffract around obstacles. Conversely, in open rural areas, higher frequencies may suffice. This adaptability highlights the need for thorough analysis and testing in the field to establish the most effective operating frequency for any given situation.In practical applications, the lowest useful high frequency is also critical in emergency communication systems. During disasters, reliable communication can save lives, making it imperative that the frequencies used are capable of reaching all affected areas. By adhering to the principles of the lowest useful high frequency, emergency services can ensure that their messages are transmitted clearly and efficiently, even under challenging conditions.In conclusion, the concept of lowest useful high frequency is fundamental in the field of telecommunications. It encompasses the principles of signal integrity, environmental adaptability, and practical application in emergency situations. As technology continues to evolve, understanding and applying the lowest useful high frequency will remain essential for maintaining effective communication in our increasingly connected world.

在电信和信号处理领域，术语最低有效高频率指的是信号可以有效传输和接收的最低频率，而不会显著损失质量或完整性。理解这一概念对于从事各种通信技术的工程师和技术人员至关重要，包括无线电、电视和互联网数据传输。最低有效高频率在确定这些系统性能方面发挥着关键作用，因为它设定了通过给定媒介有效沟通的阈值。进一步阐述，让我们考虑一下频率是如何分类的。通常，频率被分为几个频段，如低频（LF）、中频（MF）、高频（HF）、超高频（VHF）和极高频（UHF）。最低有效高频率通常落在高频范围内，该范围从3 MHz到30 MHz。这一范围尤其重要，因为它允许长距离通信，使信号能够反弹到电离层，从而使得与远程站点的连接成为可能。识别最低有效高频率的重要性不容小觑。例如，在设计通信系统时，工程师必须确保所选择的频率能够穿透障碍物，并在不同距离上保持清晰度。如果频率过低，信号可能会变弱并容易受到干扰，而如果频率过高，则可能无法有效传播，导致接收效果不佳。因此，确定最低有效高频率对于优化通信设备的性能至关重要。此外，最低有效高频率还因环境因素和特定应用而异。例如，在建筑物众多的城市地区，较低的频率可能更有效，因为它们能够绕过障碍物。而在开阔的农村地区，较高的频率可能就足够了。这种适应性突显了在现场进行彻底分析和测试以建立任何给定情况下最有效的工作频率的必要性。在实际应用中，最低有效高频率在紧急通信系统中也至关重要。在灾难发生时，可靠的通信可以挽救生命，因此使用的频率必须能够覆盖所有受影响区域。通过遵循最低有效高频率的原则，紧急服务可以确保他们的信息在困难条件下也能清晰有效地传输。总之，最低有效高频率的概念在电信领域具有基础性的重要性。它涵盖了信号完整性、环境适应性以及在紧急情况下的实际应用等原则。随着技术的不断发展，理解和应用最低有效高频率将继续对维持我们日益互联的世界中的有效通信至关重要。