narrowband

简明释义

英[ˈnærəʊbænd]美[ˈnæroʊbænd]

n. 窄频带

英英释义

单词用法

同义词

反义词

例句

1.There have many kinds of noises in site, thereinto white noise and periodic narrowband noise are tow important noises.

现场存在着各种各样的噪声，其中，白噪声和周期性窄带干扰是两类重要的干扰。

2.Starting from paraxial wave equation, analytical propagation expressions of hyperbolic secant pulsed beams with narrowband and broadband are derived.

从近轴波动方程出发推导了窄带和宽带双曲正割脉冲光束的解析传输公式。

3.The small signal analysis for high frequency modulation characteristics of specific wavelength laser diode with narrowband filter was presented.

采用窄带滤光片作为选频元件对精确波长激光器高频调制特性进行了小信号分析。

4.According to frequency spectrum transfer characteristic of modulation and demodulation, we think the position measurement noise is Gaussian narrowband noise.

根据调制解调的频谱转移特性，提出了有效位移噪声是高斯窄带噪声。

5.But when the frequency of components is too near, HHT cannot shift the narrowband signal because of mode confusion.

但由于模态混淆，当信号组合分量的频率太接近时，HHT常不能正确分解窄带信号。

6.The broadband FM signals and the narrowband CF signals travel out to a target, reflect from it, and return to the hunting bat.

宽带FM信号和窄带CF 信号传输到目标，从目标反射回来，然后返回猎蝠。

7.Furthermore, the change of the noise through narrowband filter and detection circuit and the effect on the radar tracking precision are analyzed in quantity.

对噪声经过窄带滤波、检波电路后的变化及其对雷达跟踪精度的影响进行了定量分析。

8.The hardware circuits of narrowband suppressing jamming for PRCPM fuze are implemented.

硬件上实现了伪码调相引信窄带压制性干扰。

9.Analytical Propagation Expressions of Hyperbolic Secant Pulsed Beams with Narrowband and Broadband.

窄带和宽带双曲正割脉冲光束的解析传输式。

10.The satellite communication system uses narrowband technology for efficient data transmission.

卫星通信系统使用窄带技术进行高效的数据传输。

11.In rural areas, narrowband internet connections are often the only option available.

在农村地区，窄带互联网连接通常是唯一可用的选项。

12.The narrowband frequency range is ideal for voice transmission.

对于语音传输来说，窄带频率范围是理想的选择。

13.Due to its limited bandwidth, narrowband systems can be less expensive to implement.

由于带宽有限，窄带系统的实施成本可能较低。

14.Many IoT devices operate on narrowband networks to conserve energy.

许多物联网设备在窄带网络上运行以节省能源。

作文

In the realm of telecommunications and signal processing, the term narrowband refers to a communication channel that has a limited bandwidth. This concept is crucial in understanding how different types of signals are transmitted and received over various media. A narrowband channel typically allows for the transmission of signals that occupy a small portion of the frequency spectrum. This is in contrast to wideband channels, which can carry a broader range of frequencies simultaneously. The significance of narrowband communication lies in its efficiency and effectiveness in certain applications. For instance, in voice communication, narrowband systems are often sufficient because the human voice occupies a relatively narrow frequency range. By using a narrowband channel, operators can optimize the use of available bandwidth, allowing more simultaneous conversations to occur without interference. Moreover, narrowband technologies are frequently employed in remote sensing and telemetry, where data needs to be transmitted over long distances with minimal power consumption. In these scenarios, narrowband communication can be advantageous, as it requires less energy compared to wideband systems. This characteristic makes narrowband solutions ideal for applications such as Internet of Things (IoT) devices, where battery life is a critical factor. One notable example of narrowband technology is the Narrowband IoT (NB-IoT), which is designed specifically for low-power wide-area networks (LPWAN). NB-IoT allows for the connection of numerous devices over a single cell, providing extended coverage and deep penetration in urban environments. This type of narrowband solution supports a vast number of devices while maintaining efficient data transmission rates, making it a popular choice for smart city applications and industrial automation. However, there are limitations to narrowband systems. The restricted bandwidth means that the data transfer rates are generally lower compared to wideband systems. Consequently, applications requiring high data throughput, such as video streaming or large file transfers, are not suitable for narrowband communication. As technology continues to evolve, the balance between bandwidth availability and the specific needs of applications will dictate the continued relevance of narrowband solutions. In conclusion, understanding the concept of narrowband is essential for anyone involved in telecommunications or signal processing. It represents a fundamental approach to efficient communication, particularly in scenarios where bandwidth is limited or where power consumption is a concern. As we move towards an increasingly connected world, the role of narrowband technologies will likely expand, offering innovative solutions to meet the demands of modern communication.

在电信和信号处理领域，术语narrowband指的是带宽有限的通信信道。这个概念对于理解不同类型的信号如何通过各种媒介传输和接收至关重要。narrowband通道通常允许传输占用频谱小部分的信号。这与宽带通道形成对比，后者可以同时承载更广泛的频率范围。 narrowband通信的重要性在于其在某些应用中的效率和有效性。例如，在语音通信中，narrowband系统通常足够，因为人声占据相对狭窄的频率范围。通过使用narrowband通道，操作员可以优化可用带宽的使用，从而允许更多的同时对话发生而不产生干扰。 此外，narrowband技术经常应用于遥感和遥测，在这些情况下，数据需要以最小的功耗远距离传输。在这些场景中，narrowband通信可能具有优势，因为与宽带系统相比，它需要更少的能量。这一特性使得narrowband解决方案非常适合物联网（IoT）设备等应用，其中电池寿命是关键因素。 一个值得注意的narrowband技术示例是窄带物联网（NB-IoT），它专门为低功耗广域网（LPWAN）设计。NB-IoT允许在单个小区内连接大量设备，提供扩展覆盖和在城市环境中的深度穿透。这种类型的narrowband解决方案支持大量设备，同时保持高效的数据传输速率，使其成为智能城市应用和工业自动化的热门选择。 然而，narrowband系统也有其局限性。受限的带宽意味着与宽带系统相比，数据传输速率通常较低。因此，要求高数据吞吐量的应用，例如视频流或大文件传输，不适合narrowband通信。随着技术的不断发展，带宽可用性与应用特定需求之间的平衡将决定narrowband解决方案的持续相关性。 总之，理解narrowband的概念对于任何参与电信或信号处理的人来说都是必不可少的。它代表了一种高效通信的基本方法，特别是在带宽有限或功耗成为关注点的情况下。随着我们迈向一个日益互联的世界，narrowband技术的作用可能会扩大，为满足现代通信的需求提供创新解决方案。