查询词典 halving method

In order to maximize the ratio of the received signal power to the noise and interference power, an optimization method, which uses the criteria of minimizing the highest side-lobe, is proposed to optimize the DWMT filter banks. Design results indicate that this method has better spectral separation property.

本文按照接收信号噪声干扰比最大的系统设计要求，采用滤波器组最大副瓣最小化准则，提出了一种用于DWMT系统的滤波器组优化方法，结果显示具有较好的频谱隔离特性。

A combination of the wave superposition method and the modified spectral representation method is applied to a wind field simulation for whole bridge including the deck and the towers.

将谐波合成法与修正的谱描述法结合用于大跨度桥梁主梁及桥塔上的随机风场模拟。

On the problem of model parameter determination, the singularity distribution method is used to derive the expressions for numerically calculating the added mass arised from vibration of the structure under three-dimensional case; The aero-dynamic damping ratio is identified from the testing data based on the methods of empirical mode decomposition, improved random decrement and Hilbert transformation; The reduced-order spectral representation method is also deduced in this chapter based on the technique of proper orthogonal decomposition.

在模型的参数计算上，采用奇点配置法推导了三维情形下结构振动诱导流场附加质量的数值计算方法；联合采用经验模态分解、改进的随机减量法及Hilbert变换对索穹顶结构的气动阻尼进行了识别分析；推导了基于本征正交分解的降阶谱解法。

Fourthly, it discusses the spectral image loss-less compression by applying thecorrelation and the entropy of the spectral image sequence. It gives and analyses three expressions of imaging spectrometer images, and tells the change in correlation coefficient and entropy for different expressions. At last, it puts forward D2PCM de-correlation method to reduce the spatial and spectral redundancy. This method improves the compression ratio and the compression efficiency, being easy and fast in operation.

根据成像光谱图像的空间、谱间相关性和信息熵的特征，提出成像光谱图像序列的三种表示方法，分析了不同表示方法的相关系数和图像信息熵的变化，并研究出了成像光谱图像的无损压缩方法，即利用D~2PCM方法对光谱图像序列进行去相关处理，同时降低图像的空间和谱间冗余，在提高了无损压缩的压缩比和压缩效率的同时，算法具有简单快速的优点。

The paper introduces the linear combined spectral model,provides a method for analyzing complex spectral-unmixing endmember from a known spectral data set by Constrained Least Squares Method.

介绍了线性混合光谱模型，提出了一种分析复合光谱的方法通过已有的光谱数据库，利用约束最小二乘法分离出像元组份，并能计算像元组份比。

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。

In this paper,we propose a modified SC-SSF(spectral correlation-signal subspace fitting)method to estimate DOA of coherent narrow band or wide-band signals,while the advantage of SC-SSF method still rematins.

提要 本文提出一种修正的SC-SSF方法。该方法适用于宽带和窄带源，不仅可解决循环相关源的问题，而且具有更好的噪声抑制特性。

In the detection system, the analysis method of blood flow is the dominant factor. The method is mainly based on spectrogram. It is very significative to study and research the methods for analyzing blood flow.

在超声多普勒血流检测系统中，对血流信号的分析方法目前还是建立在声谱图的基础上，因此对信号分析方法的研究，是决定检测系统性能的主要因素，是非常有意义的研究课题。

In this paper, a signal detection method based on Spectrogram and binary integration in Radon transform parameter space is proposed. By using this method, stro...

本文提出了基于谱图-Radon变换二值积累的方法，这种方法可以有效的检测出被强信号平台掩盖的弱信号，具有较大的实用价值，仿真实验结果表明这种算法是有效的。

Compared with the spectrophotometer method, the gas chromatography method is simple, rapid, accuracy, and better repeated.

与分光光度法相比，气相色谱法具有简便、快速、准确、重复性好等优点。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。