查询词典 spectral

In advanced time-division multiple-access mobile communication systems, reduced-state equalization algorithms have to be employed because high-level modulation is used in order to improve spectral efficiency.

在先进的时分多址接入移动通信系统中，需要一个减少状态均衡算法来提高高阶调制方式下频谱的有效性。但是这种均衡算法只有在具有最小相位的离散时间系统中才能获得高性能。

Order spectral technique. Non-Gaussian AR model was employed for the analysis and classification for PCG signals.

本文利用高阶谱分析方法，提出以非高斯参数模型对心音信号进行双谱分析与分类。

Secondly,taking those into account,characteristic bands for paddy rice extraction were proposed and merged into SPOT-5 images in order to increase spectral information and improve the separability.

结果表明，该方法的总体提取效果较好，其提取精度与通常的监督分类方法相比有了较大的提高，只是在水稻和玉米交界处有误判现象。

By analyzing the theory of higher order cummulants and higher order spectrum ,the methods of machine fault feature extraction are researched based on higher order spectral analysis by using the character that higher order spectrum can restrain the gauss noise.

在分析高阶累积量与高阶谱的理论基础上，利用高阶谱可以抑制加性高斯噪声的性质，研究了基于高阶谱分析的机械故障特征提取方法，提出了基于双谱估计的齿轮故障诊断的方法。

With the structure of FNN turning more complex, the good approach or classification is hard to get because of redundancies and uncertainties caused by both large volume uncertain data and lack of prior knowledge. Based on high order spectral reduction for rulers, a new structure changed Fuzzy Neural Network is proposed.

针对先验知识不完备和不确定的情况下海量数据造成的冗余和互斥，模糊神经网络结构变得复杂化并不能很快逼近和分类输出对象的情况，提出了一种基于高阶谱完成规则约简的变结构模糊神经网络的模型。

The application of high order spectral analysis is related to computations of high order moment functions and multi-dimensional Fourier transforms. The errors appear in these computations and limitation of measured data may cause the failure of such comparison.

高阶谱分析方法的应用中要涉及到高阶谱矩、高阶相关函数及高维傅立叶变换的计算，这些计算所带来的近似及试验记录的局限性很可能是导致两种方法比较时不成功的原因。

With these molecular parameters, we provide a mid-infrared frequency standard with deviations as small as 10~(-5)- 10~(-4)cm~(-1) in order from NIST spectral data.

我们利用双差分速度调制激光光谱技术，首次获得了CS~+A~2∏(v=1)-X~2∑~+(v=0)高分辨电子吸收光谱。

In this dissertation, we analyzed the residual images of MSI, stored the residual images as 1-D data in spectral direction in order to enhance the correlation between neighbor data, and coded them by context-based arithmetic coding.

本文通过分析多光谱图象的残差图象的特点，将其残差图象按谱维方向重新排列成一维数据，增强相邻数据之间的相关性，建立上下文模型，再进行算术编码。

The packet error rate and channel estimation are used to compute the adaptive threshold in order to maximize spectral efficiency under given delay and error performance constraints.

该技术结合了传统物理层自适应调制和链路层自动请求重发，利用链路层的误包率和信道估计参数计算自适应调制门限，在系统给定时延和误包率约束的基础上最大程度地提高了频谱利用率。

A second method for enhancing the identification process of the fringe is a variant of the two wavelength method. We require two wavelength that have a wide spectral separation in the order of 100nm.

第二种方法来提高条纹鉴别力是双波长方法的变形，使用双波长来获得宽光谱间隔在100nm的量级。

Researches reveal that students who suffer from corporal punishment tend to resort to violence in their future life.

研究表明遭受过肉体惩罚的孩子倾向于在他们今后的人生中使用暴力。

Total sugar of sarcocarp and chlorophyll of pericarp increased firstly, and then decreased afterward along with altitude; Titratable acidity, ascorbicacid and anthocyanin of pericarp were increased along with altitude; The content of protein increased firstly and decreased afterward along with altitude; Carotenoid of pericarp were decreased along with altitude.

果肉总糖和果皮叶绿素含量随海拔高度升高先升高后降低；可滴定酸、维生素C和果皮花青苷含量均随海拔升高而升高；蛋白质在1720m处最大，1420m处最小；果皮类胡萝卜素随海拔升高而降低。