ground echo

简明释义

地面回波

英英释义

例句

1.The sonar equipment picked up a ground echo 地面回声 indicating the presence of underwater rocks.

声纳设备捕捉到了一个地面回声，表明水下有岩石存在。

2.During the flight test, the pilots noted an unusual ground echo 地面回声 that affected their navigation.

在飞行测试中，飞行员注意到一种异常的地面回声，影响了他们的导航。

3.The radar system detected a strong ground echo 地面回声 from the nearby mountains.

雷达系统探测到附近山脉的强烈地面回声。

4.The military radar had to filter out false ground echoes 地面回声 during the training exercise.

军事雷达在训练演习中必须过滤掉虚假的地面回声。

5.The geologist used seismic waves to analyze the ground echo 地面回声 for signs of fault lines.

地质学家利用地震波分析地面回声以寻找断层线的迹象。

作文

In the world of meteorology and atmospheric science, the term ground echo refers to a phenomenon that occurs when radar signals bounce off the surface of the Earth and return to the radar receiver. This can create a variety of effects on the radar display, which can sometimes lead to confusion for meteorologists trying to interpret weather data. Understanding ground echo is crucial for accurate weather forecasting and analysis.When a radar system emits a pulse of energy, it travels through the atmosphere until it encounters an object, such as precipitation or terrain. If the pulse hits the ground instead of a weather-related target, it reflects back to the radar as a ground echo. These echoes can appear as false targets on radar screens, potentially masking real weather events or creating misleading information about storm intensity and location.For example, during heavy rainfall, a meteorologist may observe strong radar returns indicating precipitation. However, if there is significant ground echo from the underlying terrain, it can complicate the interpretation of the data. Meteorologists must be trained to identify and filter out these ground echoes to ensure that they are accurately assessing the weather conditions.Moreover, ground echo can vary depending on several factors, including the angle of the radar beam, the type of terrain, and the frequency of the radar used. For instance, mountainous regions may produce more pronounced ground echo due to the rugged landscape, while flat areas might reflect radar signals differently. This variability requires meteorologists to have a deep understanding of their local geography and how it interacts with radar technology.In addition to its implications for weather forecasting, ground echo also plays a role in aviation safety. Air traffic controllers use radar to monitor aircraft movements, and understanding the potential for ground echo can help prevent miscommunications regarding an aircraft's position. For instance, if a radar system picks up a strong ground echo in a busy airspace, it may mistakenly indicate that an aircraft is present when it is not, leading to unnecessary alarms and potential safety risks.To mitigate the effects of ground echo, meteorologists and air traffic controllers employ various techniques. Advanced radar systems can adjust their settings to minimize ground clutter, while software algorithms can help distinguish between actual weather targets and ground echo. Continuous training and education in radar interpretation are also essential for professionals in these fields to enhance their skills in identifying and managing ground echo.In conclusion, the concept of ground echo is vital in both meteorology and aviation. It represents a challenge that professionals must navigate to ensure accurate weather predictions and safe air travel. By understanding the nature of ground echo, meteorologists and air traffic controllers can improve their analyses, ultimately benefiting society by providing reliable weather information and enhancing aviation safety. As technology continues to advance, the ability to effectively manage ground echo will only become more critical in these fields.

在气象学和大气科学的世界中，术语地面回波指的是一种现象，当雷达信号反射到地球表面并返回雷达接收器时。这可能在雷达显示上产生各种效果，有时会导致气象学家在解读天气数据时产生困惑。理解地面回波对于准确的天气预报和分析至关重要。当雷达系统发出一脉冲能量时，它会穿过大气直到遇到一个物体，比如降水或地形。如果脉冲击中地面而不是与天气相关的目标，它会作为地面回波反射回雷达。这些回波可以在雷达屏幕上表现为虚假目标，可能掩盖真实的天气事件或产生关于风暴强度和位置的误导信息。例如，在强降雨期间，气象学家可能会观察到强烈的雷达回波，指示降水。然而，如果有显著的地面回波来自底层地形，这可能会使数据的解读变得复杂。气象学家必须经过培训，以识别和过滤这些地面回波，以确保他们准确评估天气条件。此外，地面回波的变化取决于多个因素，包括雷达波束的角度、地形类型以及使用的雷达频率。例如，山区可能由于崎岖的地形产生更明显的地面回波，而平坦地区可能以不同的方式反射雷达信号。这种变异性要求气象学家深入了解当地地理及其与雷达技术的互动。除了对天气预报的影响，地面回波在航空安全中也发挥着作用。空中交通控制人员使用雷达监控飞机的移动，理解地面回波的潜力可以帮助防止关于飞机位置的误传。例如，如果雷达系统在繁忙的空域中捕捉到强烈的地面回波，它可能错误地指示一架飞机存在，而实际上并没有，从而导致不必要的警报和潜在的安全风险。为了减轻地面回波的影响，气象学家和空中交通控制人员采用各种技术。先进的雷达系统可以调整设置以最小化地面杂波，而软件算法可以帮助区分实际的天气目标和地面回波。持续的培训和教育在这些领域的专业人士中也是必不可少的，以提高他们识别和管理地面回波的技能。总之，地面回波的概念在气象学和航空中至关重要。它代表了专业人员必须应对的挑战，以确保准确的天气预测和安全的航空旅行。通过理解地面回波的性质，气象学家和空中交通控制人员可以改善他们的分析，最终通过提供可靠的天气信息和增强航空安全来造福社会。随着技术的不断进步，有效管理地面回波的能力在这些领域将变得更加关键。