Many of the TV frequency bands have been vacated by TV's move to digital, so, in a country hungry for wireless resources, it was proposed that this spectrum get redirected to mobile access use.
当电视信号变为数字信号后,许多电视的频率带宽都被闲置下来。因此,在一个渴望无线资源的国家,这些频带被引向移动接入应用可谓众望所归。
The root cause for interoperability remains the same--multiple users in different frequency bands using different waveforms.
同样,这也是使用不同波形、不同频率的多个用户不能保持互操作性的根本原因。
Exploit differences in technologies and frequency bands.
发掘各种技术和频带之间的差别。
Through the energy analysis of different frequency bands, we can attain the blasting vibration signals' frequency identity and original signals' part character.
通过各频带的能量分析,才能获得较准确的频率特性,同时也可以得到原始信号的局部特征。
The descriptive statistics for body weight normalized strength, normalized peak EMG, time to onset, time to peak, median frequency, mean power frequency, and frequency bands were calculated.
对于力量与体重、肌电图的峰值、起始时间、峰值时间、中位频率、平均功率、和频段均进行标准化描述后进行统计计算。
Meanwhile, some noises are added into frequency bands where it is less visible in order to achieve noise smooth of overall reconstructing image.
同时,在不灵敏频带内(如图象边缘区)引入一定噪声以达到整个恢复图象的噪声平滑。
Given a base XTAL frequency, it shows you all possible frequencies within HAM bands.
给定一个基本的XTAL频率,它显示在HAM波段内所有可能的频率。
Reference data for RCS scales, radio-frequency bands, engagement geometries, and representative threat systems are summarised in Annex a.
参考资料来源于rcs减缩、无线电波段、接触几何和典型威胁系统见附录a。
In the direct digital synthesis of periodic signals, the frequency resolutions and bands of the synthesized signals are limited by the working frequency and data capacity of the synthesizing system.
在利用直接数字式合成方法产生周期信号时,信号的频率分辨率和带宽直接受限于合成系统的工作频率和存储容量。
The ability of the RF power analyzer to measure power within specified frequency bands enables it to spot defects that an RF power meter cannot.
功率分析仪可在指定频段测量的能力使其能发现功率计发现不了的错误。
The correlation between frequency variations of enzyme bands and tree height, DBH and volume was very small. Only B45 band came up to or closed significant level.
酶带频率变异与树高、胸径、材积生长相关性很小,只有B _(45)酶带与生长相关达到或近于显著水平。
Putong peach had higher genetic similarity and frequency of gene exchange by dendrogram of RAPD bands.
从RAPD带型聚类图分析,普通桃类的遗传相似系数较高,基因交换频繁。
The dependence of relative intensity and frequency of bands of aromatic ring on the atomic number of lanthanides indicates the presence of a double-double effect.
芳香环谱带的相对强度和频率对于镧系元素原子序数的依赖关系表明双-双效应的存在。
Gradual shifting of the spectral bands indicates the gradual changes of frequency, which reflects the gradual changes of net depositional rate.
滑动窗能谱带的逐渐转移,表示频率的逐渐变化,反映净沉积速率的逐渐变化。
Spectrum sensing technology is a key component of cognitive radio whose function is to find out the empty frequency bands quickly and reliably.
频谱检测是感知无线电的关键技术之一,要求感知用户可靠、快速地检测频谱空洞。
In order to satisfy the amplitude response of the filter, we add constraints of amplitude on different frequency bands, and analyze the influence of the maximal amplitude error on the design results.
为满足滤波器的幅值响应要求,分别给不同频带加入幅值约束,并分析了最大幅值误差参数对设计结果的影响。
A frequency translation circuit (172-188) abuts the multiple channel bandpass filtered analogue signals in the frequency domain without any guard bands between adjacent channel signals.
频率平移电路(172 ~ 188)使得经过带通滤波的若干多通道模拟信号在频域中接邻,而在相邻通道信号之间没有任何保护频带。
In this system, the signal is decomposed on different frequency bands, then data compression and data recomposition are performed respectively.
该系统对信号首先按不同的频带进行分解,然后分别进行数据压缩和数据重构。
According to the method, the energy of different frequency bands after wavelet packet decomposition constitutes the input vectors of support vector machine as feature vectors.
该方法将振动信号小波包分解后的频带能量作为特征向量,输入到由多个支持向量机构成的多故障分类器中进行故障识别和分类。
The frequency bands of high-energy for burst activities are lower than those of random single spike firing and continuous single spike firing.
爆发活动信号高能量所在频段比随机单发锋电位活动和连续发放锋电位活动信号的要低。
In fault diagnosis of machinery, the method can extract fault information of machine parts of different frequency bands.
该方法实现了在机械设备故障诊断中不同频带范围内零部件故障信息的分离和提取。
Especially, in the lower frequency bands, the bigger calculation errors arise because of the few spectrum points.
特别是低频段部分,因为谱线数太少,会造成更大的计算误差。
Waveguide-based spatial power combining project mainly focus on the problem of how to combine power inside the waveguide within the frequency bands of millimeter wave.
波导空间功率合成项目主要研究的问题是如何在波导内部进行毫米波频段空间功率合成放大。
We do orthogonal wavelet transform of a face image, get its four sub images of different frequency bands, then respectively extract their singular value features.
对人脸图象作正交小波变换,得到它在不同频带上的四个子图象,然后分别提取奇异值特征。
Assisted by other bands high frequency geometric information, reconstruct noise band image with wavelet reconstruction filter to de-noise noise band image.
以其他波段的几何信息辅助噪声污染波段重构,经过相应的小波重构滤波器滤波,获得该波段图像的重建以进行消噪。
This may necessitate transmitting and receiving signals in different frequency bands.
这可能使在不同频段内发射及接收信号成为必要的。
The graphic representation of an FFT usually plots the amplitudes of the frequency bands over time, offering a highly readable and visual representation of the sound being examined.
FFT的图形显示常表现为不同频段的振幅随时间的变化,提供被测声音信号清晰易读的,可视图形。
The graphic representation of an FFT usually plots the amplitudes of the frequency bands over time, offering a highly readable and visual representation of the sound being examined.
FFT的图形显示常表现为不同频段的振幅随时间的变化,提供被测声音信号清晰易读的,可视图形。
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