radar cross section

简明释义

雷达目标有效截面

英英释义

例句

1.The radar cross section of a stealth fighter is significantly lower than that of a conventional aircraft.

隐形战斗机的雷达散射截面显著低于常规飞机。

2.The aircraft's radar cross section is designed to be as small as possible to avoid detection.

该飞机的雷达散射截面被设计得尽可能小，以避免被探测到。

3.The radar cross section can vary based on the angle of incidence of the radar waves.

根据雷达波的入射角，雷达散射截面可能会有所不同。

4.Engineers use materials that reduce the radar cross section of military vehicles.

工程师使用能够降低军事车辆雷达散射截面的材料。

5.Understanding the radar cross section is crucial for improving radar detection systems.

理解雷达散射截面对于提高雷达探测系统至关重要。

作文

The concept of radar cross section plays a crucial role in the field of radar technology and is essential for understanding how objects interact with radar waves. In simple terms, radar cross section (RCS) measures how detectable an object is by radar systems. It is defined as the effective area that reflects radar signals back to the source, thus determining the strength of the echo received by the radar. The larger the radar cross section, the more easily the object can be detected. This measurement is particularly important in military applications, where stealth technology aims to minimize the radar cross section of aircraft and other vehicles to avoid detection by enemy radars.In military aviation, for instance, stealth fighters are designed with shapes and materials that significantly reduce their radar cross section. This reduction is achieved through various techniques, such as using non-reflective surfaces and specific angles that deflect radar waves away from the source. The effectiveness of these designs is often quantified in terms of their radar cross section, which can be as low as a fraction of a square meter for advanced stealth aircraft. Understanding this concept allows engineers to create better designs that can evade radar detection, thereby enhancing the survivability of military assets.Apart from military uses, radar cross section is also relevant in civil aviation and automotive industries. For example, air traffic control relies on radar systems to track aircraft. A better understanding of an aircraft's radar cross section helps in optimizing radar systems for improved tracking accuracy. Similarly, in the automotive sector, radar technology is increasingly being used for safety features like collision avoidance systems. Knowing the radar cross section of vehicles can help manufacturers design more effective radar sensors that can detect cars, pedestrians, and obstacles more reliably.Moreover, the radar cross section is not a fixed value; it can vary based on several factors including the angle of incidence, the frequency of the radar waves, and the object's surface material. This variability means that radar engineers must conduct extensive testing and modeling to accurately determine the radar cross section of different objects under various conditions. Techniques such as anechoic chambers are often used to measure RCS in a controlled environment, allowing for precise calculations that inform design decisions.In conclusion, the radar cross section is a fundamental concept in radar technology that affects both military and civilian applications. Its implications extend from stealth technology in defense to safety measures in everyday transportation. As technology continues to advance, the importance of understanding and manipulating the radar cross section will only grow, making it a vital area of study for engineers and scientists alike. By mastering this concept, we can enhance our ability to design systems that effectively utilize radar technology, ultimately leading to safer skies and roads for everyone.

“雷达散射截面”的概念在雷达技术领域中扮演着至关重要的角色，对于理解物体与雷达波的相互作用至关重要。简单来说，雷达散射截面（RCS）测量一个物体被雷达系统检测到的程度。它被定义为有效反射雷达信号回源的面积，从而决定雷达接收到的回波强度。雷达散射截面越大，物体被检测到的可能性就越高。这一测量在军事应用中尤为重要，其中隐身技术旨在最小化飞机和其他车辆的雷达散射截面，以避免被敌方雷达侦测。例如，在军事航空中，隐身战斗机的设计采用了显著减少其雷达散射截面的形状和材料。这种减少是通过各种技术实现的，例如使用非反射表面和特定角度来将雷达波偏转到源的方向之外。这些设计的有效性通常用其雷达散射截面来量化，对于先进的隐身飞机，其雷达散射截面可以低至几平方米的分数。理解这一概念使工程师能够创造出更好的设计，从而规避雷达侦测，增强军事资产的生存能力。除了军事用途，雷达散射截面在民航和汽车工业中也具有相关性。例如，空中交通管制依赖于雷达系统来跟踪飞机。对飞机的雷达散射截面有更好的理解，有助于优化雷达系统以提高跟踪精度。同样，在汽车行业，雷达技术越来越多地用于安全功能，如防碰撞系统。了解车辆的雷达散射截面可以帮助制造商设计出更有效的雷达传感器，从而更可靠地探测汽车、行人和障碍物。此外，雷达散射截面并不是一个固定值；它可能会根据多个因素而变化，包括入射角、雷达波的频率以及物体的表面材料。这种可变性意味着雷达工程师必须进行广泛的测试和建模，以准确确定不同物体在各种条件下的雷达散射截面。通常使用无回声室等技术在受控环境中测量RCS，从而进行精确计算，为设计决策提供信息。总之，雷达散射截面是雷达技术中的一个基本概念，影响着军事和民用应用。其影响范围从国防中的隐身技术到日常交通中的安全措施。随着技术的不断进步，理解和操控雷达散射截面的重要性只会增加，使其成为工程师和科学家研究的关键领域。通过掌握这一概念，我们可以增强设计有效利用雷达技术的系统的能力，最终为每个人创造更安全的天空和道路。