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用matlab产生不同的波型，对其进行FFT 功率谱，对数谱然后用IFFT进行反变换(Using matlab produce different wave type, its FFT power spectrum, the spectrum and then use the IFFT to inverse transform)

针对地震seg数据的各种预处理程序集，例如：格式转换，道头读取等(Assemblies for various pre-earthquake seg data, such as: format conversion, said head reads, etc.)

PCA又为主成分分析，是一种特征提取方法， 它通过线性变换寻找一组最优的单位正交向量基，用他们的线性组合来重构原样本(PCA and the main component analysis, a feature extraction method, which by finding a set of optimal linear transformation unit orthogonal base vectors, with their linear combination to reconstruct the original sample)

MATLAB语言常用算法程序集,非常适合初学者！(MATLAB language commonly used algorithm for assembly, very suitable for beginners!)

说明：  lpi信号的生成，如lfm，多相编码，步进频信号，时频分析测试成像，(LPI signal generation, such as LFM, polyphase coding, step frequency signal, time-frequency analysis, test imaging,)

去除adc采样信号基线程序，需要输入采样率，基线时刻等(trime base line)

reading Ply format file and exract vertex and face matrix for 3D-Objects

constant control of zsi

Matlab toolbox wave 3example小波计算,希望对大家有用(Matlab toolbox wave 3example Wavelet basis, everyone would like to be useful)

说明：  构建PID控制器，设计P和I两个参数，并画出其参数范围(Build a PID controller, the design of the two parameters P and I and draw the scope of its parameters)