passive direction finder

简明释义

无源测向仪

英英释义

例句

1.Using a passive direction finder, the team was able to locate the source of the signal without emitting any noise.

通过使用被动方向探测器，团队能够在不发出任何噪音的情况下定位信号源。

2.During the search and rescue mission, the passive direction finder helped pinpoint the location of the distress signal.

在搜索和救援任务中，被动方向探测器帮助准确定位了求救信号的位置。

3.Maritime vessels often use a passive direction finder to detect nearby ships without revealing their own position.

海洋船只经常使用被动方向探测器来探测附近的船只，而不暴露自己的位置。

4.The aircraft was equipped with a passive direction finder to enhance its navigation capabilities.

这架飞机配备了一个被动方向探测器以增强其导航能力。

5.The passive direction finder is particularly useful in military operations where stealth is crucial.

在军事行动中，被动方向探测器特别有用，因为隐蔽性至关重要。

作文

In the world of navigation and communication, the term passive direction finder refers to a sophisticated device that determines the direction of incoming signals without actively transmitting any signals of its own. This technology plays a crucial role in various fields, including aviation, maritime navigation, and military operations. Understanding how a passive direction finder works can enhance our appreciation of modern navigation systems and their applications.At its core, a passive direction finder utilizes the principle of triangulation to ascertain the location of a signal source. By analyzing the time difference of arrival (TDOA) of signals received by multiple antennas, the device can calculate the angle of arrival and pinpoint the direction from which the signal is coming. This method is particularly advantageous because it does not emit any signals that could potentially reveal the location of the user or the equipment.One of the significant benefits of using a passive direction finder is its stealth capability. In military applications, for instance, being able to detect enemy communications without broadcasting one's position is invaluable. This technology allows for reconnaissance missions where intelligence can be gathered discreetly, providing a tactical advantage on the battlefield.In aviation, a passive direction finder can assist pilots in identifying the location of nearby aircraft or navigational aids. By receiving signals from transponders or other aircraft, pilots can determine their relative positions and ensure safe distances between flying entities. This enhances situational awareness and contributes to overall flight safety.Moreover, maritime navigation heavily relies on passive direction finders for locating buoys, lighthouses, and other critical navigational aids. Ships equipped with this technology can accurately determine their heading and avoid potential hazards, such as rocks or shallow waters. The ability to receive information passively allows vessels to navigate safely while conserving energy and resources.The advancements in digital signal processing have further improved the efficacy of passive direction finders. Modern devices are equipped with sophisticated algorithms that can filter out noise and enhance signal clarity. This ensures that the direction-finding process is not only accurate but also reliable under various environmental conditions.In conclusion, the passive direction finder is an essential tool in contemporary navigation and communication systems. Its ability to detect signals without emitting any of its own provides a level of discretion that is crucial in many applications, especially in military and aviation contexts. As technology continues to evolve, we can expect further enhancements in the capabilities of passive direction finders, making them even more integral to safe and efficient navigation. Understanding this technology not only highlights its importance but also encourages ongoing innovation in the field of signal detection and navigation.

在导航和通信的世界中，术语被动方向探测器指的是一种复杂的设备，它能够确定传入信号的方向，而无需主动发射任何信号。这项技术在航空、海洋导航和军事行动等多个领域发挥着至关重要的作用。理解被动方向探测器的工作原理有助于我们更好地欣赏现代导航系统及其应用。从根本上说，被动方向探测器利用三角测量原理来确定信号源的位置。通过分析多个天线接收到的信号到达时间差（TDOA），该设备可以计算到达角度并确定信号来源的方向。这种方法特别有利，因为它不发出任何可能暴露用户或设备位置的信号。使用被动方向探测器的一个显著好处是其隐蔽能力。在军事应用中，例如，能够在不广播自己位置的情况下探测敌方通信是非常宝贵的。这项技术使得情报收集任务能够秘密进行，从而在战场上提供战术优势。在航空领域，被动方向探测器可以帮助飞行员识别附近飞机或导航设备的位置。通过接收来自应答器或其他飞机的信号，飞行员可以确定相对位置，并确保飞行实体之间保持安全距离。这增强了情境意识，并有助于整体飞行安全。此外，海洋导航在寻找浮标、灯塔和其他关键导航设备方面也严重依赖被动方向探测器。配备此技术的船舶可以准确确定航向，避免潜在危险，如岩石或浅水区。被动接收信息的能力使船只能够安全导航，同时节省能源和资源。数字信号处理的进步进一步提高了被动方向探测器的有效性。现代设备配备了复杂的算法，可以过滤噪声并增强信号清晰度。这确保了方向探测过程不仅准确，而且在各种环境条件下都可靠。总之，被动方向探测器是当代导航和通信系统中的重要工具。它在不发出任何自身信号的情况下检测信号的能力提供了在许多应用中至关重要的谨慎程度，特别是在军事和航空背景下。随着技术的不断发展，我们可以期待被动方向探测器的能力进一步增强，使其在安全高效导航中变得更加不可或缺。理解这项技术不仅突显了其重要性，还鼓励在信号检测和导航领域的持续创新。