cover_compute

水印的嵌入，在图象中嵌入水印，以提高安全性与可靠性(Embedded watermark, the watermark embedded in the images to enhance the security and reliability)

Simple Function Approximation

线性相位FIR低通滤波器和48阶带通滤波器，并进行了比较的源程序。(Linear phase FIR low-pass filter and 48-order band-pass filter, and a comparison of the source.)

针对滚动轴承故障信号具有非平稳、非高斯的特点，提出了将时域分析与小波分析相结合的方法对滚动轴承进行故障诊断。在研究不同信号分析方法理论的基础上，以滚动轴承外圈故障振动信号为例，采用多种信号处理方法进行了分析。结果表明，各种分析方法在分析轴承故障时的特点各不相同，在实际使用中，可将时域分析与小波分析综合使用，实现轴承状态的实时监测与故障的准确定位。(For rolling bearing fault signals have non-stationary, non-Gaussian, we proposed the time-domain analysis and wavelet analysis method of combining the rolling element bearing fault diagnosis. In the study of different analytical methods based on the theory of signal to the outer ring rolling bearing fault vibration signal, for example, using a variety of signal processing methods are analyzed. The results show that a variety of analytical methods in the analysis of the characteristics of bearing failure vary, in actual use, can be time-domain analysis and synthesis using wavelet analysis, to achieve accurate positioning of the bearing condition monitoring and real-time fault.)

PLL FS1860 源程序,调试过是OK的,大家可以参考一下.(PLL FS1860 source, debugging off is OK, and everyone can reference.)

悬臂梁基础固支端水平方向受到振动强度RMS值为1g的高斯随机激励，有效激振频带为200Hz。要求设计合适的振动控制方案，使得在控制器的作用下，该悬臂梁自由端的随机振动响应具有良好的抑制效果。(Gaussian basis cantilever clamped horizontally by the end of the vibration intensity 1g RMS value of random excitation, the effective excitation band of 200Hz. To design a suitable vibration control scheme, making the role of the controller, random vibration response of the free end of the cantilever has a good inhibitory effect.)

Nsdcalc.m is a Matlab program for performing the image enhancement process described in the accompanying paper. Place the program in your work directory along with the demonstration data file grav.txt. At the Matlab prompt type

SIFT特征提取程序，matlab编写。SIFT是图像上的某种特征，具有尺度，光照，甚至仿射不变性，广泛的用于图像拼接，目标检测，目标跟踪等应用中。(SIFT descriptor)

Ns-2 learning basics

matlab模拟衍射积分,矢量衍射 离轴抛物面镜聚焦特性(matlab simulation of diffraction integral, vector diffraction focusing properties of off-axis parabolic mirror)