查询词典 signal

Nowadays, encephalogram instruments which are in use in the medical industry fall into two types, namely, analog signal and digital signal.

目前医疗上在用的脑电图仪有模拟信号和数字信号两种。

Of the 11 follow-up cases, 11 encephalomalacia lesions were detected in 4 cases, which showed long T1 and long T2 signal intensity with low signal intensity on DWI.

复查11例其中7例痊愈，其余4例出现11个软化灶，在T2WI表现为异常高信号，在DWI表现为低信号，T1WI表现为低信号。

This is a normal signal from normal native endothelial cells. This is the signal from the regenerated endothelium.

这是从正常的原有的内皮细胞得到的信号产物，这是是从再生内皮细胞上得到的信号产物。

Wavelet transform is a new tool in signal processing which is fit for non-stationary signals and Teager energy operator can efficiently detect the 'energy' of a signal.

因此，无声段和清音段几乎不包含说话人的信息，在说话人辨认中，应该把无声段和清音段去掉，而只留下能够体现说话人个人信息的浊音段。

Based on the energy operator Teager of the wavelet coefficients,the energy of the decomposed magnetic memory signals was increased.Using the signal singularity detection theory of the wavelet transform,combining the observation on the multidimensional transform results and the in Russia patented technique,the selfadaptive wavelet noise suppression of the signal was realized and the characteristic gradient of the magnetic memory was extracted.

基于小波系数的"Teager"能量算子，增强了分解后的磁记忆信号能量；从小波变换的信号奇异性检测理论出发，把多尺度变换结果观测与俄罗斯专利技术相结合，能准确判断异常应力集中区，实现了信号自适应小波消噪，提取了磁记忆的特征量梯度。

IMU signal which is in ground coordinate system transforms to output in missile coordinate system through transformation matrix, and considering the constant error of inertial component, white noise, and random error, the IMU signal in missile can be simulated.

IMU在地面系下的投影，通过转换矩阵转换为弹体系下的输出，再考虑到惯性器件常值误差﹑白噪声与随机误差的影响，即可模拟IMU在弹体内的输出。

The mathematical models of the delay of the GPS signal in the circumstance are put forward respectively. The computation of orbital arc of the two satellite constellations is based on two body problem and perturbations models. An algorithm based on the IRI model and thin layer model is used to simulate the ionospheric delay of the GPS signal. The error models of observation, multipath, relativity and antenna phase center bias are also researched. Under the consideration of the autocorrelation of the electronical measurements, the autoregressive model of time series is introduced into the noise models.

在信号仿真中，研究了利用二体运动和摄动法计算LEO卫星至GPS卫星星座的几何距离的问题；在信号的误差模型中，研究了电离层时延的IRI2001模型和单层投影模型；讨论了观测误差、多径效应、相对论效应和天线相位中心偏移的误差模型；结合电子测量噪声的具有自相关特性的经验，研究了观测误差的AR模型；结合实测数据分析，讨论了接收机钟差和卫星钟差的误差建模问题。

The key problem of using ESPRIT algorithm to estimate signal parameter is the estimation of signal subspace.

运用ESPRIT算法进行信号参数的估计，关键是对信号子空间的估计。

The results of the study are as follows: 1 Wigner′s time-frequency analysis of the geoacoustic signal is of a clear physical meaning, which can be described as the energy distribution in time and frequency domain, and can reveal the frequency spectrum essential features of non-stationary geoacoustic signal.

研究表明：1。地声信号的Wigner时-频分析具有明确的物理意义，它可表述为信号在时间和频率域上的能量分布，揭示了非稳态地声信号频谱的本质特征。

To further understand and correctly master the notion of marginal spectrum in Hibert-huang transform, the linear property of marginal spectrum is demonstrated, an mistake to the notion of marginal spectrum in some documents is pointed out, and a new viewpoint about the essential difference between marginal spectrum and Fourier frequency spectrum is put forward by which the amplitude of Fourier frequency spectrum only represents the probability that a frequency objectively exists in a signal while the amplitude of marginal spectrum decides whether a frequency objectively exists in a signal.

为了深入理解和正确掌握希尔伯特－黄变换（Hilbert-Huang Transform，简称HHT）中的边际讲概念，证明了边际谱的线性性质，指出了文献中对边际谱概念的一种误解，提出了边际普与Fourier频谱之间本质区别的一种的新观点，即Fourier频谱的幅值只能反映频率在信号中实际存在的可能性大小，而边际谱的幅值则能真实反映频率在信号中是否存在。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。