噪

Not the cold Christmassy stuff but lumps of noise all over the picture.

模拟图像上的噪点干扰，图像上充满块状噪点

This algorithm characterizes large convergence domain and better reduction noise performance, especially in condition of 5dB～20dB SNR.(6) An equalizer to compensate non-linear time-variant channel in chaotic communication system is conducted.

同其它的方法相比，这个新的迭代算法具有大范围的收敛区域和良好的降噪效果，特别是在信噪比为5dB～20dB时，明显优于其它方法。

Objective To find the relationship between correlation and signal to noise ratio of transient evoked otoacoustic emissions.

目的探讨在瞬态诱发耳声发射信号的检测过程中瞬态诱发耳声发射信号总的相关率和信噪比，以及各分频段相关率和信噪比的变化规律和相互关系。

In order to obtain the weights of WWFM, an approach named Covariance Matrix Method is proposed to estimate the SNR of sources.

为获得该算法中的信噪比权值估计，提出估计目标源信噪比的"协方差矩阵方法"，获得较好的估计效果。

Experimental results show that the algorithm can segmentalize ROI effectively, CR is higher than 30, PSNR of the whole image is higher than 42 dB, and the object keeps original fidelity. Inter-frame CR is about 7, background has cumulative error and PSNR is higher than 40 dB.

实验结果表明，该算法在帧内能有效地划分感兴趣区域，压缩率在30以上，峰值信噪比在42dB以上，目标无失真；帧间压缩的压缩率在7左右，背景区域有误差累积，但整体图像的峰值信噪比都在40dB以上，目标无失真。

Wiih rapidly developing of communication technology, the system and modulation manner of communication signals became more and more complicated and various, and circumstance of signals became increasing denseness.

近几十年来人们在通信信号的识别方面作了大量有益的探索，提出了很多新思路和新方法，但是这些方法都是基于固定的信噪比，没有涉及信噪比变化时的信号识别问题。

The effect of spectra resolution on the detected characteristic absorption structure of gaseous pollutants and the variation of differential cross section of gaseous pollutants with the change of resolution are studied.

主要研究了光谱分辨率对污染气体被检测到的特征吸收结构形状的影响，以及差分吸收截面随分辨率的变化趋势，从而确定了光谱分辨率对污染气体最低可检测浓度的影响，通过研究分辨率与光强的关系，确定了分辨率与信噪比的函数关系式，得出了DOAS测量NO2，O3和SO2的最佳信噪比范围，对多种污染物标准气体进行了同时监测，计算出标准气体在不同光谱分辨率下的测量误差，确定了对NO2，O3和SO2监测的最适用的分辨率范围。

This is a nonlinear diffusion equation denoising article The article explains how the denoising and maintain an edge ...

这是一篇利用非线性扩散方程进行去噪的文章，在文章中说明了如何在去噪和保持边缘间达到一个较好的平衡。

In order to improve the accuracy of fingerprint directional image further, combining the advantage of the continuity of the point directional image with the advantage of the robustness of the block directional image to the noises in the fingerprint image, a novel concept on the continuously distributed directional image/field and the method to compute it in the fingerprint images are develope...

实践证明这种连续分布方向图过渡平滑、自然，既具有很好的连续性、渐变性和抗噪性，又具有极高的精确度，还兼有指纹点方向图的连续过渡性和块方向图的抗噪性优点。

This paper analyzed the process of concrete component ultrasonic testing signals applying the wavelets technology and wavelet packages technology from the discomposed effect, the avoiding noise and the composition of the signal.

基于小波函数的特点，从小波分解的效果，小波降低信噪比等方面，系统地分析小波及小波包在混凝土构件超声信号检测中的应用，利用四阶 Daubechies小波函数建立了一小波消噪模型。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。