radio horizon

简明释义

无线电地平

英英释义

例句

1.When planning a new antenna installation, consider the radio horizon 无线电视距 for optimal coverage.

在规划新的天线安装时，请考虑无线电视距以获得最佳覆盖。

2.Mountains can block signals and reduce the effective radio horizon 无线电视距 significantly.

山脉可以阻挡信号并显著减少有效的无线电视距。

3.The signal from the transmitter can reach up to the radio horizon 无线电视距 of 50 miles.

发射器的信号可以达到50英里的无线电视距。

4.The radio horizon 无线电视距 is an important factor in determining communication range.

在确定通信范围时，无线电视距是一个重要因素。

5.Due to the curvature of the Earth, we cannot receive signals beyond the radio horizon 无线电视距.

由于地球的曲率，我们无法接收到超出无线电视距的信号。

作文

In the realm of telecommunications and radio communications, understanding the concept of radio horizon is crucial for effective signal transmission and reception. The term radio horizon refers to the maximum distance over which radio waves can travel and still be received clearly. This phenomenon is primarily influenced by the curvature of the Earth and the frequency of the radio waves being used. As radio waves propagate, they can be affected by various factors such as terrain, atmospheric conditions, and the height of the transmitting antenna. To grasp the significance of the radio horizon, one must first acknowledge that radio waves do not travel indefinitely. Unlike light waves, which can travel in a straight line until they encounter an obstacle, radio waves can bend and reflect off surfaces. However, there is a limit to how far these waves can effectively travel, especially when considering the Earth's curvature. This limit is what we refer to as the radio horizon. The radio horizon can be calculated using a specific formula that takes into account the height of the antenna and the Earth's radius. For instance, if a radio antenna is elevated at a height of 30 meters, the radio horizon would extend approximately 20 kilometers. This means that any receiver located within this distance would likely receive a clear signal, while those further away may experience significant degradation in signal quality. Understanding the radio horizon is essential for various applications, including broadcasting, emergency communications, and even amateur radio. In broadcasting, knowing the radio horizon helps stations determine the optimal placement of their antennas to maximize coverage. For emergency services, having reliable communication within the radio horizon ensures that critical information can be transmitted during disasters when traditional communication systems may fail. Moreover, advancements in technology have introduced methods to extend the radio horizon. Techniques such as using repeaters, which are devices that receive and retransmit signals, can help overcome geographical obstacles and increase the effective range of communication. Additionally, the use of higher frequency bands can also modify the characteristics of radio wave propagation, thereby affecting the radio horizon. In conclusion, the concept of radio horizon plays a vital role in the field of radio communications. It defines the limits of signal transmission based on several factors, including the height of antennas and the curvature of the Earth. By understanding and applying this knowledge, engineers and technicians can optimize communication systems to ensure reliable connectivity. As technology continues to evolve, the exploration of new methods to enhance the radio horizon will remain an important area of study within the telecommunications industry.

在电信和无线电通信领域，理解无线电地平线的概念对于有效的信号传输和接收至关重要。术语无线电地平线指的是无线电波能够传播并仍然清晰接收的最大距离。这种现象主要受地球曲率和所使用的无线电波频率的影响。当无线电波传播时，它们可能会受到地形、大气条件和发射天线高度等各种因素的影响。要理解无线电地平线的重要性，首先必须承认无线电波并不是无限传播的。与光波不同，光波可以直线传播，直到遇到障碍物，而无线电波可以弯曲并反射。然而，这些波有效传播的距离是有限的，尤其是在考虑到地球的曲率时。这个限制就是我们所指的无线电地平线。无线电地平线可以通过一个特定的公式来计算，该公式考虑了天线的高度和地球的半径。例如，如果一根无线电天线的高度为30米，则无线电地平线大约延伸20公里。这意味着位于此距离内的任何接收器都可能接收到清晰的信号，而那些远离的接收器可能会经历信号质量的显著下降。理解无线电地平线对于各种应用至关重要，包括广播、紧急通信甚至业余无线电。在广播中，了解无线电地平线帮助电台确定天线的最佳放置，以最大化覆盖范围。对于应急服务而言，在无线电地平线内进行可靠通信确保在灾难发生时可以传递关键信息，而传统通信系统可能会失效。此外，技术的进步引入了扩展无线电地平线的方法。使用中继器等设备可以帮助克服地理障碍并增加通信的有效范围。此外，使用更高频段也可以改变无线电波传播的特性，从而影响无线电地平线。总之，无线电地平线的概念在无线电通信领域中发挥着重要作用。它定义了信号传输的限制，基于多种因素，包括天线的高度和地球的曲率。通过理解和应用这些知识，工程师和技术人员可以优化通信系统，以确保可靠的连接。随着技术的不断发展，探索增强无线电地平线的新方法将继续成为电信行业研究的重要领域。