single sideband transmission

简明释义

单边带传输

英英释义

例句

1.The radio operator used single sideband transmission to improve the clarity of the signal.

无线电操作员使用单边带传输来提高信号的清晰度。

2.In amateur radio, single sideband transmission is preferred for long-distance communication.

在业余无线电中，单边带传输因其适合远距离通信而受到青睐。

3.The marine vessel relied on single sideband transmission for reliable communication at sea.

这艘海洋船只依靠单边带传输在海上进行可靠通信。

4.Many military operations utilize single sideband transmission for secure and efficient communication.

许多军事行动利用单边带传输进行安全高效的通信。

5.Using single sideband transmission, the pilot was able to communicate with air traffic control without interference.

通过使用单边带传输，飞行员能够与空中交通管制进行无干扰的通信。

作文

In the realm of radio communication, one of the most significant advancements has been the development of techniques that enhance the efficiency and clarity of signal transmission. Among these techniques, single sideband transmission stands out as a pivotal method that revolutionizes how we transmit audio signals over long distances. This method is particularly important in amateur radio, aviation, and maritime communication, where clear and reliable communication is crucial. To understand single sideband transmission (单边带传输), it is essential to first grasp the concept of amplitude modulation (AM). In traditional AM broadcasting, the carrier wave is modulated by the audio signal, creating a spectrum that includes the carrier frequency and two sidebands: the upper and lower sidebands. While this method is effective, it is not the most efficient use of bandwidth. The presence of the carrier and both sidebands means that a significant amount of power is wasted, especially since the human ear is primarily sensitive to the audio frequencies rather than the carrier itself. This is where single sideband transmission comes into play. By eliminating the carrier wave and one of the sidebands, this technique significantly reduces the bandwidth required for transmission. The result is a more efficient use of power and spectrum, allowing for clearer signals even in the presence of interference. For instance, in a typical AM transmission, about two-thirds of the power is used to transmit the carrier wave, which does not contribute to the actual audio content. In contrast, single sideband transmission focuses all available power on the remaining sideband, thereby enhancing the signal's strength and clarity. The advantages of single sideband transmission are particularly evident in crowded frequency bands. In amateur radio, where multiple operators often share the same frequencies, using single sideband transmission allows for more conversations to occur simultaneously without interfering with one another. This is because the reduced bandwidth enables operators to occupy adjacent frequencies without causing significant overlap or distortion. Moreover, single sideband transmission is also beneficial in terms of range. Since the transmission requires less power due to the absence of the carrier wave, operators can communicate over greater distances without needing excessively powerful transmitters. This is particularly advantageous for maritime and aviation applications, where communication reliability is paramount. In conclusion, single sideband transmission (单边带传输) represents a crucial innovation in the field of radio communications. Its ability to streamline signal transmission by eliminating unnecessary components allows for clearer, more efficient communication over long distances. As technology continues to evolve, the principles behind single sideband transmission will undoubtedly remain relevant, proving essential for both amateur enthusiasts and professional operators alike. Understanding and mastering this technique is vital for anyone looking to excel in the field of radio communication.

在无线电通信领域，最重要的进展之一是开发增强信号传输效率和清晰度的技术。在这些技术中，单边带传输作为一种关键方法，彻底改变了我们如何在长距离上传输音频信号。这种方法在业余无线电、航空和海事通信中尤为重要，因为清晰可靠的通信至关重要。要理解单边带传输，首先必须掌握调幅（AM）的概念。在传统的AM广播中，载波波被音频信号调制，产生一个包含载波频率和两个边带（上边带和下边带）的频谱。虽然这种方法有效，但它并不是带宽使用的最有效方式。载波和两个边带的存在意味着大量的功率被浪费，尤其是因为人耳主要对音频频率敏感，而不是载波本身。这就是单边带传输发挥作用的地方。通过消除载波波和一个边带，这种技术显著减少了传输所需的带宽。结果是更高效地利用功率和频谱，即使在干扰存在的情况下也能实现更清晰的信号。例如，在典型的AM传输中，大约三分之二的功率用于传输载波波，而这并不贡献于实际的音频内容。相比之下，单边带传输将所有可用功率集中在剩余的边带上，从而增强了信号的强度和清晰度。单边带传输的优势在拥挤的频率带中尤为明显。在业余无线电中，由于多个操作员经常共享相同的频率，因此使用单边带传输允许更多的对话同时发生而不会互相干扰。这是因为降低的带宽使得操作员能够占用相邻的频率，而不会造成显著的重叠或失真。此外，单边带传输在范围方面也具有优势。由于传输由于缺少载波波而需要的功率较少，操作员可以在不需要过于强大的发射机的情况下进行更远距离的通信。这对于海事和航空应用尤其有利，因为通信的可靠性至关重要。总之，单边带传输代表了无线电通信领域的一项关键创新。它通过消除不必要的组件来简化信号传输，使得长距离的清晰、高效通信成为可能。随着技术的不断发展，单边带传输背后的原理无疑将继续保持相关性，对于业余爱好者和专业操作员而言都是必不可少的。理解和掌握这一技术对于任何希望在无线电通信领域中脱颖而出的人来说都是至关重要的。