frequency-modulation keying telegraphy

简明释义

键控调频电报

英英释义

例句

1.The invention of frequency-modulation keying telegraphy revolutionized the way messages were transmitted during wartime.

频率调制键控电报的发明彻底改变了战时信息传递的方式。

2.The new software allows for easy integration of frequency-modulation keying telegraphy into existing radio systems.

新软件允许将频率调制键控电报轻松集成到现有的无线电系统中。

3.In the training session, we learned how to implement frequency-modulation keying telegraphy in emergency communication systems.

在培训课程中，我们学习了如何在紧急通信系统中实现频率调制键控电报。

4.The radio operator used frequency-modulation keying telegraphy to send encrypted messages over long distances.

无线电操作员使用频率调制键控电报发送加密消息，跨越长距离。

5.Using frequency-modulation keying telegraphy, the team was able to maintain a secure line of communication.

通过使用频率调制键控电报，团队能够保持安全的通信线路。

作文

In the world of telecommunications, various methods are employed to transmit information over distances. One such method is known as frequency-modulation keying telegraphy, which combines frequency modulation with keying techniques to encode and send messages. This system has its roots in early telegraphy but has evolved with advancements in technology, making it a significant aspect of modern communication systems.To understand frequency-modulation keying telegraphy better, we must first break down its components. Frequency modulation (FM) is a technique where the frequency of a carrier wave is varied in accordance with the information signal. This means that by changing the frequency of the wave, we can encode different pieces of information. Keying, on the other hand, refers to the process of turning the carrier wave on and off, creating distinct signals that represent different characters or instructions.The combination of these two techniques results in a robust method for transmitting data. In frequency-modulation keying telegraphy, the information is transmitted through variations in frequency, while the keying aspect ensures that the transmission can be understood clearly by the receiver. This is particularly useful in noisy environments where traditional amplitude modulation might struggle to maintain clarity.The advantages of using frequency-modulation keying telegraphy include improved resistance to interference and better sound quality. Since frequency modulation is less susceptible to noise than amplitude modulation, the signals can be transmitted over longer distances without degradation. This characteristic makes it ideal for applications in aviation, maritime communication, and even in amateur radio operations.Moreover, frequency-modulation keying telegraphy allows for efficient bandwidth usage. By encoding more information in a single transmission, it reduces the need for multiple channels, thereby optimizing the use of available frequencies. This efficiency is crucial in today’s fast-paced communication landscape, where bandwidth is often at a premium.Historically, frequency-modulation keying telegraphy has been instrumental in military communications. During World War II, for instance, this method was used to ensure secure and reliable communication between units. The ability to transmit coded messages that could be deciphered quickly was a game-changer in many tactical situations. Even today, military operations continue to employ variations of this technique to maintain secure lines of communication.In conclusion, frequency-modulation keying telegraphy represents a significant advancement in the field of telecommunications. By combining frequency modulation with keying techniques, it has provided a reliable and efficient means of transmitting information over long distances. As technology continues to evolve, the principles behind frequency-modulation keying telegraphy will likely remain relevant, adapting to new challenges and opportunities in the ever-changing landscape of global communication. Understanding this method not only highlights the complexities of telecommunication systems but also underscores the importance of innovation in connecting people around the world.

在电信的世界中，采用多种方法来远距离传输信息。其中一种方法被称为频率调制键控电报，它将频率调制与键控技术结合起来，以编码和发送消息。该系统源于早期电报，但随着技术的进步而发展，成为现代通信系统的重要组成部分。要更好地理解频率调制键控电报，我们首先必须拆解其组成部分。频率调制（FM）是一种技术，其中载波波的频率根据信息信号变化。这意味着通过改变波的频率，我们可以编码不同的信息片段。而键控则指的是开启和关闭载波波的过程，从而创建代表不同字符或指令的独特信号。这两种技术的结合产生了一种强大的数据传输方法。在频率调制键控电报中，信息通过频率的变化进行传输，而键控方面则确保接收方能够清晰理解传输内容。这在传统幅度调制可能难以保持清晰度的嘈杂环境中特别有用。使用频率调制键控电报的优点包括对干扰的更好抵抗力和更高的音质。由于频率调制比幅度调制更不易受到噪声的影响，因此信号可以在较长距离内传输而不会降级。这一特性使其在航空、海事通信甚至业余无线电操作中理想。此外，频率调制键控电报允许高效的带宽使用。通过在单次传输中编码更多信息，减少了对多个信道的需求，从而优化了可用频率的使用。这种效率在当今快速发展的通信环境中至关重要，因为带宽常常是稀缺资源。历史上，频率调制键控电报在军事通信中发挥了重要作用。例如，在第二次世界大战期间，这种方法用于确保部队之间的安全可靠通信。能够快速传输可解码的消息在许多战术情况下改变了游戏规则。即使在今天，军事行动仍然继续采用这种技术的变体，以维护安全的通信线路。总之，频率调制键控电报代表了电信领域的重要进步。通过将频率调制与键控技术结合，它提供了一种可靠且高效的方式来远距离传输信息。随着技术的不断发展，频率调制键控电报背后的原理可能会继续保持相关性，并适应全球通信不断变化的挑战和机遇。理解这种方法不仅突显了电信系统的复杂性，也强调了创新在连接世界各地人们中的重要性。