frequency shift keying

简明释义

频移键控

英英释义

例句

1.The frequency shift keying 频移键控 modulation scheme is often used in RFID systems for data transmission.

在RFID系统中，频移键控 frequency shift keying 调制方案通常用于数据传输。

2.The frequency shift keying 频移键控 technique allows for efficient use of bandwidth in wireless networks.

该频移键控 frequency shift keying 技术允许在无线网络中有效利用带宽。

3.In satellite communication, frequency shift keying 频移键控 can help maintain a stable connection over long distances.

在卫星通信中，频移键控 frequency shift keying 可以帮助维持长距离的稳定连接。

4.Many amateur radio operators prefer frequency shift keying 频移键控 for its robustness against noise.

许多业余无线电操作员更喜欢使用频移键控 frequency shift keying，因为它对噪声具有较强的抗干扰能力。

5.In modern digital communication systems, frequency shift keying 频移键控 is commonly used to transmit data over radio waves.

在现代数字通信系统中，频移键控 frequency shift keying 通常用于通过无线电波传输数据。

作文

In the realm of digital communication, various techniques are employed to transmit data efficiently and reliably. One such technique is known as frequency shift keying, which is often abbreviated as FSK. This method plays a crucial role in the modulation of signals, allowing for the effective transmission of information over various mediums. To better understand frequency shift keying (频移键控), it is essential to explore its principles, applications, and advantages.Frequency shift keying is a form of frequency modulation where digital information is transmitted through discrete frequency changes of a carrier wave. In simpler terms, it means that different frequencies represent different binary values. For instance, a '0' might be represented by one frequency, while a '1' is represented by another. This binary signaling is particularly beneficial in minimizing errors during data transmission, making frequency shift keying a popular choice in various communication systems.The principle behind frequency shift keying is relatively straightforward. When a binary signal is sent, the transmitter shifts the frequency of the carrier wave according to the input data. The receiver then detects these frequency changes and decodes them back into binary data. This process is efficient and allows for robust communication even in noisy environments, as the distinct frequencies help distinguish between the transmitted signals.One of the primary applications of frequency shift keying is in radio communication. It is widely used in amateur radio, as well as in some forms of digital broadcasting. Additionally, FSK is utilized in telemetry systems, where data from remote sensors is sent back to a central location. This application is particularly important in fields like environmental monitoring and space exploration, where reliable data transmission is critical.Moreover, frequency shift keying is also found in modem technologies. Early modems employed this technique to convert digital data from computers into audio signals that could be transmitted over telephone lines. Even in modern communication systems, variations of FSK continue to be used, especially in low-power and short-range applications, such as RFID (Radio Frequency Identification) systems.The advantages of using frequency shift keying are numerous. Firstly, it is relatively simple to implement, which makes it an attractive option for many engineers and developers. Secondly, the technique exhibits good resistance to noise and interference, which is crucial in maintaining the integrity of the transmitted data. Lastly, FSK can be easily integrated with other modulation schemes, allowing for more complex communication systems to be developed.However, frequency shift keying is not without its limitations. One notable drawback is its bandwidth efficiency; compared to other modulation techniques, FSK typically requires more bandwidth to transmit the same amount of data. This can be a significant consideration in scenarios where bandwidth is limited.In conclusion, frequency shift keying (频移键控) is a vital technique in the field of digital communication. Its ability to transmit data reliably through frequency modulation has made it indispensable in various applications, from amateur radio to telemetry systems. As technology continues to advance, the principles of frequency shift keying will likely evolve, paving the way for new innovations in the world of communication. Understanding this technique not only enhances our knowledge of digital communication but also highlights the importance of effective data transmission in our increasingly connected world.

在数字通信领域，各种技术被用来高效和可靠地传输数据。其中一种技术被称为频移键控，通常缩写为FSK。这种方法在信号调制中发挥着关键作用，使信息能够有效地通过各种媒介进行传输。为了更好地理解频移键控，有必要探讨其原理、应用和优势。频移键控是一种频率调制形式，通过载波波的离散频率变化来传输数字信息。简单来说，这意味着不同的频率代表不同的二进制值。例如，一个“0”可能由一个频率表示，而“1”则由另一个频率表示。这种二进制信号特别有助于减少数据传输过程中的错误，使得频移键控成为各种通信系统中的热门选择。频移键控背后的原理相对简单。当发送二进制信号时，发射机根据输入数据改变载波波的频率。接收器然后检测这些频率变化，并将其解码回二进制数据。这个过程是高效的，即使在嘈杂的环境中也能实现稳健的通信，因为不同的频率有助于区分传输的信号。频移键控的主要应用之一是在无线电通信中。它在业余无线电以及某些形式的数字广播中得到广泛使用。此外，FSK还用于遥测系统，其中远程传感器的数据被发送回中央位置。这一应用在环境监测和太空探索等领域尤为重要，在这些领域，可靠的数据传输至关重要。此外，频移键控也出现在调制解调器技术中。早期的调制解调器采用这种技术将计算机的数字数据转换为可以通过电话线传输的音频信号。即使在现代通信系统中，FSK的变体仍然被使用，尤其是在低功耗和短距离应用中，例如RFID（射频识别）系统。使用频移键控的优势有很多。首先，它相对容易实现，这使得它成为许多工程师和开发者的吸引选择。其次，该技术对噪声和干扰表现出良好的抵抗力，这对于维护传输数据的完整性至关重要。最后，FSK可以与其他调制方案轻松集成，从而允许开发出更复杂的通信系统。然而，频移键控并非没有局限性。一个显著的缺点是其带宽效率；与其他调制技术相比，FSK通常需要更多的带宽来传输相同数量的数据。在带宽有限的情况下，这可能是一个重要的考虑因素。总之，频移键控（频移键控）是数字通信领域的一项重要技术。它通过频率调制可靠地传输数据的能力使其在从业余无线电到遥测系统等各种应用中不可或缺。随着技术的不断进步，频移键控的原理可能会演变，为通信世界的新创新铺平道路。理解这一技术不仅增强了我们对数字通信的知识，还突显了在我们日益互联的世界中有效数据传输的重要性。