primary radar

简明释义

一次雷达(发出信号并接收由探测物标反射回来的信号

英英释义

例句

1.The airport uses primary radar to detect incoming flights.

机场使用初级雷达来探测即将到来的航班。

2.The ship's navigation system includes primary radar for collision avoidance.

船只的导航系统包括初级雷达以避免碰撞。

3.The military employs primary radar for tracking enemy aircraft.

军方使用初级雷达跟踪敌方飞机。

4.In bad weather, primary radar provides crucial data for air traffic control.

在恶劣天气中，初级雷达为空中交通管制提供重要数据。

5.Unlike secondary radar, primary radar does not rely on transponders.

与次级雷达不同，初级雷达不依赖于应答器。

作文

Radar technology has revolutionized the way we navigate and monitor our surroundings. Among the various types of radar systems, primary radar plays a crucial role in air traffic control and surveillance. Unlike secondary radar, which relies on transponders in aircraft to provide information, primary radar operates by emitting radio waves that reflect off objects in their path. This fundamental difference makes primary radar an essential tool for detecting and tracking aircraft, especially in environments where secondary systems might fail or be unavailable.The operation of primary radar is relatively straightforward. A radar antenna sends out a pulse of radio waves, which travel through the atmosphere until they encounter an object, such as an airplane. When the waves hit the object, they bounce back to the radar system. By measuring the time it takes for the waves to return, the radar can determine the distance to the object. Additionally, the angle at which the waves are received helps to ascertain the object's direction. This process allows air traffic controllers to maintain situational awareness and ensure the safety of aircraft in their airspace.One of the significant advantages of primary radar is its ability to detect all types of objects, regardless of whether they are equipped with transponders. This capability is particularly valuable in situations where aircraft may not be transmitting their position, such as in the case of military operations or when dealing with malfunctioning equipment. Moreover, primary radar is less susceptible to jamming and interference, which can be critical in hostile environments.However, primary radar is not without its limitations. The resolution of primary radar is generally lower than that of secondary systems, meaning that it may not provide as detailed information about an aircraft's identity or altitude. Additionally, environmental factors, such as rain or snow, can affect the accuracy of the radar readings, leading to potential misinterpretations of the data.In conclusion, while primary radar may not be as advanced as some modern radar technologies, it remains an indispensable component of air traffic management. Its ability to detect a wide range of objects without relying on onboard systems ensures that it continues to play a vital role in ensuring aviation safety. As technology evolves, integrating primary radar with other systems will likely enhance its effectiveness, providing a more comprehensive picture of the airspace. Understanding the principles and applications of primary radar is essential for anyone involved in aviation and air traffic control, highlighting the importance of this technology in maintaining safe and efficient air travel.

雷达技术彻底改变了我们导航和监控周围环境的方式。在各种雷达系统中，primary radar（初级雷达）在空中交通控制和监视中发挥着至关重要的作用。与依赖飞机上的应答器提供信息的次级雷达不同，primary radar通过发射反射波来探测路径中的物体。这一基本差异使得primary radar成为检测和跟踪飞机的重要工具，尤其是在次级系统可能失效或不可用的环境中。primary radar的操作相对简单。雷达天线发送出一个无线电波脉冲，这些脉冲穿过大气层，直到遇到一个物体，比如飞机。当波遇到物体时，它们会反弹回雷达系统。通过测量波返回所需的时间，雷达可以确定物体的距离。此外，接收到波的角度有助于确定物体的方向。这个过程使空中交通管制员能够保持对空域的情况意识，确保飞机的安全。primary radar的一个显著优势是它能够检测所有类型的物体，无论它们是否配备应答器。这种能力在飞机可能未传输其位置信息的情况下尤为宝贵，例如在军事行动中或处理故障设备时。此外，primary radar对干扰和干扰的抗干扰能力较强，这在敌对环境中至关重要。然而，primary radar并非没有局限性。primary radar的分辨率通常低于次级系统，这意味着它可能无法提供关于飞机身份或高度的详细信息。此外，环境因素，如雨或雪，可能会影响雷达读数的准确性，导致数据的潜在误解。总之，虽然primary radar可能没有一些现代雷达技术那么先进，但它仍然是空中交通管理不可或缺的组成部分。它能够在不依赖机载系统的情况下检测广泛的物体，确保它继续在确保航空安全方面发挥重要作用。随着技术的发展，将primary radar与其他系统集成可能会提高其有效性，提供更全面的空域图像。理解primary radar的原理和应用对于任何参与航空和空中交通控制的人来说都是至关重要的，突显了这一技术在维护安全和高效空中旅行中的重要性。