窄带

The complex signal samples are then processed to determine energy in each of a plurality of narrower bandwidths corresponding to channels in the narrower bandwidth cellular radiotelephone standards.

然后，对该复信号采样进行处理，以确定与窄带宽蜂窝无线电话标准中的信道相对应的多个窄带宽中的每一个带宽中的能量。

Gabor-ring is often used in texture feature extraction, but it is based on the assumption that texture is narrowband signal and can not applied to most actual textured images that have more than one center frequency in power spectrum. To overcome the limitation of existing method, an improved method is proposed. According to this method, Gabor filters are constructed in accordance with the spectrum feature vector of texture, and a relaxation parameter is used to determine the effect of difference filters so as to integrate the frequencies and phases into the process of extraction.

Gabor环（即在频率域成环形分布的Gabor滤波器组）常被用于提取图像纹理特征，但它是以"纹理是窄带信号"为基础的，实际的纹理图像并不能很好地满足"窄带信号"的假设，用一个中心频率来描述一种纹理对能量集中在多个频率点的纹理图像往往不能取得理想的效果，而根据频谱特征值向量构造Gabor环的改进方法，通过松弛因子的加入改变不同滤波器的作用强度，综合考虑了多频率多相位对纹理特征提取的影响。

Combining with the kernel methods the algorithm uses canonical correlations in a reproducing kernel Hilbert space as the contrast function.

针对直扩通信中存在多个窄带干扰的情况，提出一种利用核独立分量分析的窄带干扰抑制算法。

In this paper we propose a method called Generalized Spectral Correlation Signal Subspace Fitting for DOA estimation,which is applicable in both wide and narrow band scenarios.Especially,in narrow band cases,the method is capable of enlarging the effective aperture of sensor array considerably.

本文提出了一种用广义谱相关信号子空间拟合进行波达方向估计的方法，该方法同时适用于宽带与窄带信号的DOA估计，在窄带情形下还能够大大提高阵列的等效孔径。

A narrowband interference has a greater power spectral density. Thus it will bring more strong devastation to the DSSS system than a broadband one does.So it is difficult for DSSS system to ensure a high quality of communication by itself when strong interference exists, even communication may be intermitted.

窄带干扰(Narrow-Band Interference，NBI)由于其功率谱密度比宽带干扰高得多，所以它对DSSS系统的破坏性更强，当有强窄带干扰存在时仅靠系统自身的抗干扰能力很难保证系统高质量的通信，甚至可能造成系统通信中断。

Based on resonant anomaly, physical mechanism of narrow-band filtering and its condition was analyzed, and probability for realization of nonpolarizing narrow-band filtering in two-dimensional subwavelength gratings was discussed.

首先分析了基于共振异常的窄带滤波的物理机制及存在条件，讨论了二维亚波长光栅实现消偏振窄带滤波的可能性。

For finite number of frequency bins, the maximum throughput of synchronous system is about twofold to that of asynchronous system. It can be seen that the synchronous FH—CDMA system is related to slotted ALOHA system, and the asynchronous system is related to unslotted ALOHA system.

此外，还对ALOHA系统与FH—CDMA系统作了比较，得出：当要求分组错误概率较小时，FH—CDMA系统的吞吐量比ALOHA系统大得多；窄带系统中的时槽与FH—CDMA系统中的同步跳频相对应，而窄带系统中的非时槽则与FH—CDMA系统中的异步跳频相对应。

However, upon detection of an incumbent narrowband signal in the channel, the WRAN endpoint forms a frequency usage map for transmission to another WRAN endpoint, wherein the frequency usage map identifies one, or more, of the subcarrier sets that would interfere with the incumbent narrowband signal.

然而，在检测到信道中在用窄带信号时，WRAN端点形成频率使用映射，用于向另一个WRAN端点传输，其中所述频率使用映射识别一个或者多个与在所述用窄带信号干扰的子载波组。

By now, the main digital mobile system has two different tension, that is the N-TDMA and B-CDMA, while the N-TDMA has two different standards: the standard GSM in Europe and the standard DAMPS in USA.

目前，数字移动通信主要分两个派别，窄带的TDMA和宽带的CDMA，窄带的TDMA又分成欧洲的GSM和美国的DAMPS。

The manufacturing method comprises the following steps: a wire-coiling machine is used to vertically and evenly wind the metal narrowbands outside the metal capillary according to the actual need; then the regular welding method is adopted to weld the metal narrowbands wound outside the metal capillary on the outer surface of the metal capillary.

其制造方法包括以下步骤，采用绕丝机将金属窄带按实际需要竖立均匀绕制在金属毛细管外侧；之后再采用常规焊接方法将绕制在金属毛细管外侧的金属窄带均焊接在金属毛细管的外表面上。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。