propagation conditions

简明释义

传播条件

英英释义

例句

1.The research focused on the propagation conditions 传播条件 for radio waves in urban environments.

这项研究集中在城市环境中无线电波的传播条件 传播条件。

2.The team analyzed how different propagation conditions 传播条件 affect signal quality.

团队分析了不同的传播条件 传播条件如何影响信号质量。

3.Meteorological factors significantly influence the propagation conditions 传播条件 of sound waves.

气象因素显著影响声波的传播条件 传播条件。

4.Understanding the propagation conditions 传播条件 is crucial for optimizing satellite communication.

理解传播条件 传播条件对于优化卫星通信至关重要。

5.Engineers must consider propagation conditions 传播条件 when designing wireless networks.

工程师在设计无线网络时必须考虑传播条件 传播条件。

作文

In the realm of telecommunications and signal processing, understanding the concept of propagation conditions is crucial for optimizing communication systems. Propagation conditions refer to the environmental factors and physical characteristics that affect the transmission of signals through various mediums. These conditions can include atmospheric phenomena, terrain features, and even man-made structures that may interfere with signal clarity and strength.One of the primary factors influencing propagation conditions is the atmosphere. Weather conditions such as rain, fog, and snow can significantly impact the quality of signal transmission. For instance, heavy rainfall can cause attenuation, which diminishes the strength of a radio signal as it travels through the air. Similarly, fog can scatter signals, leading to a loss of clarity and potentially disrupting communication. Understanding these atmospheric influences is essential for engineers when designing systems that rely on radio frequency (RF) signals.Terrain also plays a pivotal role in determining propagation conditions. The presence of mountains, valleys, and buildings can create obstacles that hinder signal flow. In urban areas, tall skyscrapers can cause multipath propagation, where signals bounce off surfaces before reaching the receiver. This phenomenon can lead to echo and distortion, complicating the reception of clear signals. Engineers must take these geographical features into account when planning the placement of antennas and other communication infrastructure to ensure optimal performance.Moreover, the frequency of the signal being transmitted directly affects propagation conditions. Higher frequency signals tend to have shorter wavelengths, making them more susceptible to absorption and scattering by obstacles in the environment. Conversely, lower frequency signals can travel longer distances and penetrate through obstacles more effectively. This is why different communication applications, such as cellular networks, satellite communications, and broadcast radio, utilize various frequency bands tailored to their specific needs and propagation characteristics.In addition to natural elements, human activities also influence propagation conditions. The proliferation of electronic devices and wireless technologies has led to increased electromagnetic interference (EMI), which can degrade signal quality. For instance, devices operating on similar frequencies can cause interference, resulting in dropped calls or poor internet connectivity. To mitigate these issues, engineers employ techniques such as frequency hopping and spread spectrum technology to enhance signal robustness against interference.Furthermore, the study of propagation conditions is not only limited to terrestrial communication but also extends to satellite communications. When signals are transmitted from satellites to ground stations, they must pass through the Earth's atmosphere, which can introduce delays and distortions. Understanding how different layers of the atmosphere affect signal propagation is vital for ensuring reliable communication links between satellites and receivers on the ground.In conclusion, propagation conditions encompass a wide range of factors that influence how signals travel through various environments. From atmospheric phenomena to terrain features and human-made structures, each aspect plays a significant role in determining the effectiveness of communication systems. As technology continues to advance, the importance of understanding and optimizing propagation conditions will only grow, ensuring that our communication networks remain efficient and reliable in an increasingly connected world.

在电信和信号处理领域，理解传播条件的概念对于优化通信系统至关重要。传播条件是指影响信号通过各种媒介传输的环境因素和物理特性。这些条件可以包括大气现象、地形特征，甚至可能干扰信号清晰度和强度的人造结构。影响传播条件的主要因素之一是大气。天气条件如雨、雾和雪会显著影响信号传输的质量。例如，强降雨会导致衰减，这会在信号通过空气传播时降低其强度。同样，雾会散射信号，导致清晰度丧失，并可能中断通信。理解这些大气影响对于工程师在设计依赖于无线电频率（RF）信号的系统时至关重要。地形也在决定传播条件方面发挥着关键作用。山脉、山谷和建筑物的存在可能会造成妨碍信号流动的障碍。在城市地区，高耸的摩天大楼可能会导致多径传播，即信号在到达接收器之前从表面反弹。这种现象可能导致回声和失真，复杂化清晰信号的接收。工程师必须考虑这些地理特征，以确保在规划天线和其他通信基础设施的放置时达到最佳性能。此外，所传输信号的频率直接影响传播条件。高频信号往往具有较短的波长，使其更容易受到环境中障碍物的吸收和散射。相反，低频信号可以传播更远的距离并更有效地穿透障碍物。这就是为什么不同的通信应用，如蜂窝网络、卫星通信和广播电台，利用各种频段以适应其特定需求和传播特性。除了自然因素，人类活动也会影响传播条件。电子设备和无线技术的普及导致了电磁干扰（EMI）的增加，这可能会降低信号质量。例如，在相似频率上运行的设备可能会造成干扰，从而导致通话中断或互联网连接不良。为了缓解这些问题，工程师采用频率跳跃和扩频技术等技术，以增强信号对干扰的鲁棒性。此外，传播条件的研究不仅限于地面通信，还扩展到卫星通信。当信号从卫星传输到地面站时，它们必须穿过地球的大气层，这可能会引入延迟和失真。理解大气的不同层如何影响信号传播对于确保卫星与地面接收器之间可靠的通信链路至关重要。总之，传播条件涵盖了一系列影响信号在各种环境中传播的因素。从大气现象到地形特征，再到人造结构，每个方面在确定通信系统的有效性方面都发挥着重要作用。随着技术的不断进步，理解和优化传播条件的重要性只会增加，确保我们的通信网络在一个日益互联的世界中保持高效和可靠。