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matlab插值方法，二次差值，分块插值等(matlab interpolation method, the second difference, block interpolation)

This code is a complete fingerprint core point detection. It uses orientation field for singular point detection and Zhang-suen algo. for thinning in preprocessing part

根据正弦波叠加法产生莱丝信道，其中参数设置仅供参考(Gaussian power spectrum)

本算法能够按照两种策略生成并绘制随机图，但是对于生成的随机图的属性分析不够完善，从代码中能够看出作者并没有完成本算法关于“平均路径长度”、“聚类系数”和“平均度”三个属性的求解。(The algorithm is able to follow two strategies to generate and draw random graph, but for the properties generated random graph analysis is not perfect, it can be seen from the code of the algorithm is not complete on the "average path length", "clustering coefficient" and "the average degree of" solving the three properties)

勘探地震学 研一课程 二维速度结构的时域有限差分模拟 采用雷克子波(Exploration seismology Kenichi course of the two-dimensional velocity structure using finite difference time domain simulation Ricker wave)

利用Matlab软件编程实现DDS（直接数字频率合成技术）。设时钟的频率为固定值f_C，在CLK的作用下，如果按照0000,0001,0010，…，1111的地址顺序读出ROM中的数据，即表1中的幅值编码，其正弦信号频率为f_01；如果每隔一个地址读一次数据（即按0000,0001,0100，…，1110顺序），其输出信号频率为f_02，且f_02将比f_01提高一倍，即f_02=2f_01；其余类推。这样，就可以实现直接数字频率合成器的输出频率的调节。(Matlab software programming DDS (direct digital frequency synthesis). Clock frequency set to a fixed value f_C, under the effect of CLK, according to 0000,, ..., 1111 of the sequence of addresses in the ROM reads the data, i.e., the amplitude of the encoding in Table 1, the frequency of the sinusoidal signal f_01 if every time a read address data (ie 0000,0001,0100, ..., the order of 1110), the output signal frequency is f_02, and f_02 f_01 than doubled, i.e. f_02 = 2f_01 rest on. This allows direct digital frequency synthesizer output frequency regulation.)

Matlab环境下基于OPC技术实现动态矩阵控制 Matlab环境下基于OPC技术实现动态矩阵控制(Matlab environment based on OPC technology to achieve dynamic matrix control Matlab environment OPC technology based on Dynamic Matrix Control)

说明：  Matlab是一种简洁而容易入手的编程工具，对于学电子的同学在学习《数字信号处理》（清华大学版）的过程中可随课本的学习，联系matlab 一些基本的程序。(Matlab is a simple and easy to start programming tools for students learning electronic learning &quot Digital Signal Processing&quot (Tsinghua University, version) in the process of learning can be as textbooks, contact matlab some of the basic procedures.)

通过小波包分析计算柱塞流的特征值，奇异值(Through the wavelet packet analysis and calculation of the plunger flow characteristic value, singular value)

一种（LFM）Linear frequency modulation雷达的仿真(Linear frequency modulation (LFM) radar simulation)