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According on the fault mechanism of driving parts of bear box, and using the multi-resolution feature and time-frequency localization feature of wavelet transform, the fault feature signals are extracted. Besides, the noise interference is eliminated by using available noise eliminating method.

根据齿轮箱传动部件故障机理，利用小波变换多分辨率特性和时频局部化特性，提取出故障特征信号；并利用有效的消噪技术，去除噪声干扰。

This is an important DSP on the Fourier transform of the source!

这是一个关于DSP中重要的傅立叶变换的源程序！

By means of the dual of Said-Ball basis, the Marsden identity is got in terms of Said-Ball basis, and a degree reduction algorithm for Said-Ball curves is presented through the transform from Bezier curves to Said-Ball curves.

利用Said-Ball基函数的对偶基，得到幂基函数在Said-Ball基下的Marsden恒等式，及从Bézier曲线到Said-Ball曲线的转换。并给出Said-Ball曲线的降阶赋值算法。

It is proposed that the image denoising method based on dual tree complex wavelet transform and Bayesian estimation.

提出双树复小波变换和贝叶斯估计确定阈值相结合的图像去噪方法。

A new time-frequency analysis imaging method is presented for higher image resolution by means of the combination of Short Time Fourier Transform and Complex Dual Apodization.

提出了STFT和CDA处理相结合的时频分析成像方法，以获得较高的图像分辨率。

Dual tree complex wavelet transform ; Texture image segmentation ; Markov random field ; Bayesian estimation

对偶树复小波变换；纹理图像分割；马尔可夫随机场；贝叶斯估计

In this paper, a speckle reduction method for Synthetic Aperture Radar images based on Dual Tree Complex Wavelet Transform is proposed, for the DTCWT has approximate shift-invariant and good directional selectivity.

利用双树复数小波变换(Dud Tree Complex Wavelet Transform， DTCWT)的近似平移不变性和多方向选择性，提出了一种基于DTCWT变换的SAR图像嗓声抑制方法。

In this paper, a speckle reduction method for SAR images based on Dual Tree Complex Wavelet Transform is proposed. It first presumes the probability distribution function for complex wavelet coefficients of the original nature image, and then applies MAP theory to estimate coefficients from the noisy wavelet coefficients. Filtered image can be derived after inversed DTCWT.

该方法首先对无噪声污染图像的复数小波系数的统计概率分布进行建模；然后利用此先验概率模型，采用最大后验概率方法从含噪小波系数中估计出无噪声污染的小波系数：最后经重构得到滤波后的图像。

An optional 32-bit NCO/mixer in complex mode provides frequency upconversion and the dual DAC output produces a complex Hilbert Transform pair.

TI 公司的DAC56883G是高性能的16位800MSPS双路数模转换器，非常适合3G和4G通信系统的应用。

A supervised texture image segmentation algorithm based on dual tree complex wavelet transformand Markov random fieldmodel is proposed. The algorithm consists of two steps. First, the complex transform coefficients are statistically modelled

基于对偶树复小波和马尔可夫随机场模型提出了一种监督纹理图像分割算法，算法包括两个步骤，首先对复小波变换系数进行较为精确的建模，提取其一阶统计信息作为纹理特征，综合多个尺度的信息，基于极大似然标准进行初始分割

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。