snr

本程序完成地震信号的提取检测。以往都是利用地震信号的能量比，此处创新选择地震信号的过零点作为边缘提取的判断。新方法效果不错。(The process is complete extraction of seismic signal detection. Past, the energy ratio of seismic signal, where innovation and choice as the seismic signal zero-crossing edge detection judgments. The new approach is very effective.)

三个simulink相关文档，对simulink建模过程进行了详细描述，包括用指令设置simulink模型的参数。还有rtw使用介绍。(Three the simulink relevant documents on the simulink modeling process is described in detail, including the use of instruction set simulink model parameters. Rtw use introduction.)

MatLab下遗传算寻找峰位。找出一条曲线的波峰所在位置的x坐标。(Find curve peaks. Use GA method to find the X position of the peaks.)

美国辛辛那提大学的振动教材，用Matlab编制的例程。通过试验有助于理解教材。(University of Cincinnati vibration materials, use Matlab routines prepared. Contribute to an understanding of teaching through the test.)

动态因子模型，该模型可以有效对高维数据进行降维，将成百上千的数据信息浓缩在几个因子里面，即从一国许多经济时间序列数据中估计和解释驱动各变量波动的共同动态因子。 MATLAB代码(dynamic factor model, the model can be effective for high-dimensional data dimension reduction, condensed the hundreds of thousands of data in several factors, that is, from a country many economic time series data in the estimation and explain the common dynamic factors drive the variable volatility.MATLABcode)

不错的FDTD上手资料，合适光波导研究和其他研究，希望对大家有用。(Good FDTD started information, the appropriate optical waveguide and other studies, and hope to be useful.)

月球软着陆控制系统综合仿真及分析,仿真了实际所需要的环境，简单，明了。(Lunar soft landing control system simulation and analysis, simulation of the actual needs of the environment, simple and clear.)

This paper presents a novel algorithm of hiding secret messages by applying mathematical lemmas and information theory. The proposed algorithm can hide more information with acceptable embedded rate and achieves requirements of information hiding algorithm and simply information extracting. The main idea is applying modern algebra to solve the information hiding problem in multimedia. In order to prevent some attacks on stganography, hidden initial bits of image data pixels are chosen randomly. The extracted information are achieved without the reference of the original image and extracted keys. The experiment results show that our approach is effective and reliable.

自己用MATLAB编写dsp5509的中的sine.dat文件，附详细正确的编写方法，和m文件。只要改些参数就可任意生成想要的函数.dat是授人渔的方法，此论坛以及网络流传的函数经试验不好使，没有考虑许多问题生成的文件是错误的，在此详细介绍生成dsp标准.dat方法(Use matlab to creat .dat file for dsp5509 and show the method for other type dsp. It is very useful.)

controladores por variables de estado