system_identification

说明：  describe the file once again

3D algorithm for thinning in matlab

有限差分法解泊松方程、拉普拉斯方程 定义边界后利用五点差分法求解(The five-point difference method for solving the Poisson equation)

说明：  复杂网络研究，真实世界网络经典示例：足球队，鲸鱼群(Complex network research, real world network classic example: football team, whale group)

文件很重要，真的 很汇总二十公个字 道道道(are you wrong?)

说明：  matlab bag-of-local-features-models-master

主元分析中对主元的个数确定目前没有非常好的办法,这里提供一个比较方便实现的matlab程序,利用累计方差贡献率确定主元个数的matlab程序(Principal component analysis of main elements to determine there is no good way, here to provide a more convenient realization of the matlab program, using the cumulative variance contribution rate to determine the number of principal components of the matlab program)

sift算法实现的图像匹配程序，使用matlab编写的，多用于图像拼接，融合等领域。(sift algorithm of image matching procedures, the use of matlab prepared are used for image mosaic, integration and other fields.)

说明：  根据语音信号的特点给出有关滤波器的性能指标：1）低通滤波器性能指标，fp=1000Hz，fc=1200 Hz， As=100dB，Ap=1dB；2）高通滤波器性能指标，fc=2800 Hz，fp=3000 Hz As=100dB，Ap=1dB；3）带通滤波器性能指标，fp1=1200 Hz，fp2=3000 Hz，fc1=1000 Hz，fc2=3200 Hz，As=100dB，Ap=1dB。用IIR对其分析，最后，利用MATLAB中的函数freqz画出各滤波器的频率响应。(This article according to the IIR filter and the FIR filter characteristic, uses the bilinearity method of transformation under the MATLAB bad boundary to design IIR and to design the FIR numeral filter separately with the window box number, and carries on the analysis to the gathering pronunciation signal, and finally gives IIR and FIR to the pronunciation filter effect.)

模拟雷达，对雷达的功能进行分析，可以根据对参数的修改方便地看到输出的图形结果(simulated radar, the radar functional analysis Based on parameters can be amended easily see the graphics output results)