fft

calculate of momemt of figure. it use for extraction feature

运筹学中非线性规划的牛顿法，梯度法，直接法，内点法的matlab 实现(Nonlinear Programming Operations Research Newton method, gradient method, direct method, interior point method implementation matlab)

Doppler filter in FIR implementation

实现用matlab进行hausdorff距离运算的源程序，包含两图像的匹配。(Implemented by the matlab source code for hausdorff distance operations, including the two images match.)

永磁同步电机PMSM空间矢量控制SVPWM 仿真模型(Permanent magnet synchronous motor PMSM space vector control SVPWM simulation model)

CFAR to find threshold power

Mel-frequency cepstral coefficients (MFCCs) are coefficients that collectively make up an MFC. They are derived a type of cepstral representation of the audio clip (a nonlinear spectrum-of-a-spectrum ). The difference between the cepstrum and the mel-frequency cepstrum is that in the MFC, the frequency bands are equally spaced on the mel scale, which approximates the human auditory system s response more closely than the linearly-spaced frequency bands used in the normal cepstrum.

FSK信号仿真及分析 结合铁路轨道电路分析(FSK signal simulition)

无标度网络生成程序。改程序可生成无标度的复杂网络，且很好展示了无标度网络的生成机理，对于初学者帮助很大。(Scale-free network generation program. Reform program will generate a complex network of scale-free, and good scale-free networks show the generation mechanism of great help for beginners.)

说明：  二维艾里光束，阵列艾里光束，可改变光束直径以及距离(Two dimensional Airy beam, array Airy beam, variable beam diameter and distance)