passive homing

简明释义

被动导航

英英释义

例句

1.The drone utilizes passive homing to return to its launch point without any active navigation signals.

这架无人机利用被动归航在没有任何主动导航信号的情况下返回发射点。

2.The submarine employed passive homing technology to navigate underwater without revealing its position.

这艘潜艇采用了被动归航技术在水下导航而不暴露其位置。

3.The search and rescue team relied on passive homing to locate lost hikers in the wilderness.

搜救队依靠被动归航在荒野中寻找失踪的徒步旅行者。

4.In emergency situations, the passive homing feature can guide the aircraft back to safety using GPS coordinates.

在紧急情况下，被动归航功能可以利用GPS坐标引导飞机安全返回。

5.Using passive homing, the missile can track its target based on environmental cues.

利用被动归航，导弹可以根据环境线索追踪目标。

作文

In the field of navigation and guidance systems, the term passive homing refers to a method where a device or missile uses external signals to determine its target's location without emitting its own signals. This technique is particularly useful in military applications, where stealth and precision are crucial. By relying on pre-existing signals, such as radar emissions from enemy targets, passive homing allows for a more covert approach to targeting, minimizing the risk of detection by adversaries.The principle behind passive homing is relatively straightforward. The system listens for signals emitted by the target, analyzing these signals to ascertain direction and distance. Unlike active homing systems, which send out their own signals and measure the reflection off the target, passive systems operate silently. This characteristic makes them invaluable in scenarios where remaining undetected is paramount.One of the most notable applications of passive homing can be found in anti-ship missiles. These missiles often rely on the radar signals emitted by ships to home in on their targets. When a ship activates its radar, it inadvertently provides the necessary information for the missile to navigate towards it. This method not only enhances the missile's accuracy but also reduces the likelihood of interception since the missile does not reveal its presence until it is very close to the target.Furthermore, passive homing technology has evolved significantly over the years. Modern systems utilize sophisticated algorithms and advanced signal processing techniques to improve target discrimination and tracking capabilities. For instance, they can filter out background noise and focus on specific frequencies associated with the target, allowing for greater effectiveness even in cluttered environments.In addition to military applications, passive homing principles are also utilized in civilian technologies. For example, some search and rescue operations employ passive tracking systems that listen for emergency beacons activated by distressed vessels or aircraft. By triangulating the signals received from multiple sources, rescuers can pinpoint the location of the emergency more accurately and respond swiftly.Despite its advantages, passive homing is not without limitations. One significant challenge is the dependence on external signals, which may not always be available or reliable. In environments where electronic warfare is prevalent, adversaries may employ jamming techniques to disrupt the signals used for passive guidance. Therefore, while passive homing offers many benefits, it must be integrated thoughtfully with other systems to ensure operational effectiveness.In conclusion, passive homing represents a critical advancement in navigation and targeting technology. Its ability to utilize external signals for guidance while maintaining stealth makes it an essential component in modern military strategies and various civilian applications. As technology continues to advance, we can expect passive homing systems to become even more sophisticated, enhancing our capabilities in both defense and rescue operations.

在导航和引导系统的领域中，术语被动制导指的是一种方法，其中设备或导弹利用外部信号来确定目标的位置，而不发出自己的信号。这种技术在军事应用中尤其有用，因为隐蔽性和精确性至关重要。通过依赖现有信号，例如来自敌方目标的雷达发射，被动制导允许以更隐蔽的方式进行瞄准，最大限度地降低被对手发现的风险。被动制导的原理相对简单。系统监听目标发出的信号，分析这些信号以确定方向和距离。与主动制导系统不同，后者会发出自己的信号并测量反射回目标的信号，被动制导系统则是无声操作。这一特性使其在需要保持隐蔽的场景中变得极为宝贵。被动制导最显著的应用之一可以在反舰导弹中找到。这些导弹通常依靠船只发出的雷达信号来锁定目标。当一艘船激活其雷达时，它无意中提供了导弹导航所需的信息。此方法不仅提高了导弹的准确性，还减少了拦截的可能性，因为导弹在接近目标之前不会透露其存在。此外，被动制导技术多年来也得到了显著发展。现代系统利用复杂的算法和先进的信号处理技术来改善目标辨别和跟踪能力。例如，它们可以过滤背景噪音，专注于与目标相关的特定频率，从而在杂乱环境中提高有效性。除了军事应用外，被动制导原理也被用于民用技术中。例如，一些搜索和救援行动使用被动跟踪系统，监听由遇险船只或飞机激活的紧急信标。通过从多个来源三角定位接收到的信号，救援人员可以更准确地确定紧急情况的位置并迅速响应。尽管有其优势，被动制导也并非没有局限性。一个显著的挑战是对外部信号的依赖，这些信号可能并不总是可用或可靠。在电子战盛行的环境中，对手可能会采用干扰技术来破坏用于被动引导的信号。因此，尽管被动制导提供了许多好处，但必须与其他系统巧妙结合，以确保操作的有效性。总之，被动制导代表了导航和瞄准技术的重要进步。其利用外部信号进行引导，同时保持隐蔽性的能力，使其成为现代军事战略和各种民用应用中的重要组成部分。随着技术的不断进步，我们可以期待被动制导系统变得更加复杂，提高我们在防御和救援行动中的能力。