seaclutter3

Newmark beta code for SDOF structures

加入3点或5点中值平滑处理后再绘制上述基频曲线与未平滑曲线比较，观测完整一段话音的基频包络变化情况(Add to 3:00 or 5:00 in the value of the smoothing then draw the base frequency curve is not a smooth curve compared with the observed period of complete voice baseband envelope changes)

整车模型，其中包括电动机，发动机，变速器，差速器，驾驶员模型等等(CAR MODEL including motor,engine,trans,driver etc)

参数假设检验：对差异进行定量的分析，确定其性质，是随机误差还是系统误差.为给出两者界限，找一检验统计量T，在H0成立下其分布已知。(Parameter hypothesis test: a quantitative analysis of the differences, to determine its nature, is random error or system error. Is given two boundaries, looking for a test statistic T, its distribution under the establishment of the H0 known.)

说明：  信号幅度调制与解调 和 希尔伯特变换与单边带幅度调制 (Amplitude modulation and demodulation and Hilbert Transform and single sideband amplitude modulation)

均匀线列阵加权波束形成，包括均匀加权，hanning, hamming, blackman和chebychev加权，并给出极坐标图。(Uniform linear array weighted beamforming, including the uniform weighted, hanning, hamming, blackman and chebychev weighted, and give the polar diagram.)

一种基于纹理分类的数字指纹授权认证系统，matlab实现，在傅立叶域中嵌入数字指纹(texture classification based on the number of authorized fingerprint authentication system, the realization of Matlab, Fourier domain embedded in digital fingerprints)

image preprocessing and feature extraction

一个用matlab解决微分方程的例子，比较适合初学者(To solve a differential equation using matlab examples, more suitable for beginners)

说明：  fsk程序matlab实现fsk(fsk procedures matlab achieve fsk)