passive radar

简明释义

无源雷达

英英释义

例句

1.In urban environments, passive radar systems can effectively identify moving vehicles.

在城市环境中，被动雷达系统可以有效识别移动的车辆。

2.The use of passive radar has increased in maritime surveillance to monitor shipping activities.

在海上监视中，被动雷达的使用增加了，以监控航运活动。

3.The military uses passive radar to detect enemy aircraft without revealing their own positions.

军方使用被动雷达来探测敌方飞机，而不暴露自己的位置。

4.One advantage of passive radar is that it can track multiple targets simultaneously.

一种被动雷达的优点是它可以同时跟踪多个目标。

5.Researchers are developing advanced algorithms to improve the accuracy of passive radar detection.

研究人员正在开发先进的算法，以提高被动雷达探测的准确性。

作文

In recent years, advancements in technology have led to the development of various radar systems, among which passive radar stands out as a revolutionary approach to surveillance and tracking. Unlike traditional radar systems that emit signals to detect objects, passive radar operates by utilizing existing signals from other sources, such as commercial radio and television broadcasts. This innovative method not only enhances detection capabilities but also offers significant advantages in terms of stealth and cost-effectiveness.One of the primary benefits of passive radar is its ability to operate without revealing its location. Traditional radar systems emit signals that can be detected by enemy forces, making them vulnerable to countermeasures. In contrast, passive radar listens for signals rather than transmitting its own, allowing it to maintain a low profile. This characteristic is particularly valuable in military applications, where stealth is crucial for successful operations.Moreover, passive radar systems are often less expensive to implement than their active counterparts. Since they rely on existing broadcast signals, there is no need for costly infrastructure or equipment to generate radar waves. This makes passive radar an attractive option for countries with limited defense budgets, enabling them to enhance their surveillance capabilities without incurring prohibitive costs.Additionally, passive radar can provide improved tracking accuracy. By analyzing multiple signal reflections from various sources, this technology can create a detailed picture of the environment. It can track multiple targets simultaneously and distinguish between different types of objects, such as aircraft, vehicles, and even individuals. This level of detail is invaluable for both military and civilian applications, including air traffic control and disaster response.Furthermore, passive radar is less susceptible to jamming and interference. Since it does not transmit its own signals, it is harder for adversaries to disrupt its operations. This resilience makes passive radar a reliable choice in electronic warfare scenarios, where traditional radar systems may fail due to intentional interference.Despite its numerous advantages, passive radar is not without challenges. One significant hurdle is the dependency on external signals. In areas where broadcast signals are weak or non-existent, the effectiveness of passive radar may be compromised. Additionally, the technology requires sophisticated algorithms to process and analyze the received signals accurately, which can complicate system design and operation.In conclusion, passive radar represents a significant advancement in radar technology, offering unique benefits such as stealth, cost-effectiveness, and enhanced tracking capabilities. As the demand for sophisticated surveillance systems continues to grow, the importance of passive radar will likely increase, paving the way for further innovations in this field. Ultimately, as we embrace the future of technology, understanding and harnessing the potential of passive radar will be essential for both national security and civilian applications.

近年来，技术的进步导致了各种雷达系统的发展，其中被动雷达作为一种革命性的方法在监视和跟踪中脱颖而出。与传统雷达系统通过发射信号来检测物体不同，被动雷达通过利用来自其他源的现有信号（如商业广播和电视广播）进行操作。这种创新方法不仅增强了探测能力，还在隐蔽性和成本效益方面提供了显著优势。被动雷达的主要优点之一是它能够在不暴露其位置的情况下运行。传统雷达系统发射信号，可能被敌方发现，从而使其容易受到反制措施的攻击。相比之下，被动雷达倾听信号而不是发射自己的信号，使其能够保持低调。这一特性在军事应用中尤其重要，因为隐蔽性对于成功的行动至关重要。此外，被动雷达系统的实施成本通常低于其主动对手。由于它们依赖现有的广播信号，因此无需昂贵的基础设施或设备来生成雷达波。这使得被动雷达成为预算有限的国家的一个有吸引力的选择，使他们能够增强监视能力，而不会产生过高的成本。此外，被动雷达可以提供更高的跟踪精度。通过分析来自多个信号的反射，这项技术可以创建环境的详细图像。它可以同时跟踪多个目标，并区分不同类型的物体，如飞机、车辆甚至个人。这种细节水平对于军事和民用应用都非常宝贵，包括空中交通控制和灾害响应。此外，被动雷达对干扰和干扰的抵抗力较弱。由于它不发射自己的信号，因此敌方更难以破坏其操作。这种韧性使得被动雷达在电子战场景中成为可靠的选择，而传统雷达系统可能因故意干扰而失效。尽管有许多优点，被动雷达并非没有挑战。一个重大障碍是对外部信号的依赖。在广播信号微弱或不存在的地区，被动雷达的有效性可能会受到影响。此外，该技术需要复杂的算法来准确处理和分析接收到的信号，这可能会使系统设计和操作复杂化。总之，被动雷达代表了雷达技术的重要进步，提供了隐蔽性、成本效益和增强的跟踪能力等独特好处。随着对复杂监视系统需求的不断增长，被动雷达的重要性可能会增加，为该领域的进一步创新铺平道路。最终，随着我们迎接技术的未来，理解和利用被动雷达的潜力将对国家安全和民用应用至关重要。