查询词典 wavelet

Wavelet packet based multicarrier modulation is a technique combining wavelet analysis theory and multicarrier modulation perfectly. It provides high frequency efficiency, better performance against intersymbol interference, intercarrier interference, tone and impulse interference and can transmit multirate symbols easily.

小波包多载波调制技术是一种新兴的多载波调制技术，是小波分析理论和多载波通信的完美结合，具有频谱利用率高和良好的抗符号间串扰、信道间干扰、脉冲干扰和单频干扰的优良特性，并且易于多速率传输。

Wavelet; Method of moment; PCB planar spiral inductor; Intervallic wavelet; Skin-effect; Radiation characteristic

小波； 矩量法； PCB平面螺旋电感；区间小波；趋肤效应；辐射特性

This paper proposes an algorithm of infrared bicolor target recognition,in which 2D Fourier-wavelet transform is applied to extract the features of image,and the Fourier-wavelet description for the object recognition is regarded as vector characteristics,characterized with invariancy to translations,scaling and rotation.

该算法将通过二维傅立叶小波变换对图像提取的特征作为特征向量，这组特征向量具有旋转、平移和尺度不变性。

Every kind of wavelet transform including the newly developed mult -band wavelet and transform characteristic are analysed in detail, their virtues and defects are pointed out too.

详细分析了各种小波变换包括近几年刚刚发展的多进制小波的变换特征并指出各自的优缺点。

In this article, we use noncommutative wavelet method to construct wavelet basis.

本文利用非交换小波方法，来构造小波基。

In investigation of wavelet transform, the author has systematically studied properties of wavelet transform and its application in oscillographic determination.

作者在这方面的新贡献是：首次将小波变换这一新的信号处理技术系统地应用于重叠峰解析、有用信息提取等研究。

In the nature of physics,it consists with human's cochlea filter properties;in the sense of mathematics,Bark wavelet transform is a kind of non orthonormal but overcomplete,reversible and self inverting wavelet transform.

在感知特性中，它与人耳的听觉系统是直接吻合的：在数学上，它是一种非正交的但却是超完备的，可逆且是自反演的子波变换。

The standard of the characteristic scale firstly regarded the characteristic scale as a scale scope,not a concrete scale point or resolution.The method to select the characteristic scale is the corresponding scale on the local peak of wavelet detailed information variance-scale diagram and on the penk of wavelet detailed information entropy-scale diagram,the two particular scales make up of the characteristic scale scope.

特征尺度确定的标准为：以小波细节信息方差极大值的对应尺度+小波细节信息熵极大值的对应尺度为主要判定依据，同时辅以小波近似信息方差变化率出现极大值的对应尺度和小波空间自相关系数方差波动频繁的对应空间距离作为验证。

The methods of image processing and edge detection by wavelet transform were introduced in chemistry, and potentiometric titration end-points were determined by wavelet transform.

将小波变换在信号和图象处理中边缘检测的思想方法引入到化学中，用来确定电位滴定的终点，在计算中取得了非常满意的结果。

Based on dual sealing function and dual wavelet, the algorithm of constructing a compactly supported biorthogonal wavelet is proposed, at the same time, rigorous process of proofness and deduction is show.

基于对偶尺度函数及对偶小波，提出了一种构造紧支集双正交小波基的算法，幷给出严密的证明和推导过程。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。