hanninghamming

Abstract：Thearticleismainlydevotedtothetheoryaswellastheachievementonthemodulationanddemodulationofπ/ 4-DQPSKsysteminthesoftwareSystemView.Besides，thearticleanalysesthedynamicandstatic behaviorsoftheπ/4-DQPSKsystemaswellastheperformanceagainstnoiseundertheconditionofGaussnoise channel.Thecomparisonismadeonthespectrumandanti-noiseperformancebetweenπ/4-DQPSKandQPSK underthethesamechannel.Theresultofsimulationshowsthatthespectrumexpandingofπ/4-DQPSKissuperiortothatoftheQPSKsystem. Keywords：π/4-DQPSK；SystemView；computeraideddesign（CAD）；Matlab(Abstract: Thearticleismainlydevotedtothetheoryaswellastheachievementonthemodulationanddemodulationof pi/4-DQPSKsysteminthesoftwareSystemView.Besides, thearticleanalysesthedynamicandstatic behaviorsofthe pi /4-DQPSKsystemaswellastheperformanceagainstnoiseundertheconditionofGaussnoise channel.Thecomparisonismadeonthespectrumandanti-noiseperformancebetween pi /4-DQPSKandQPSK underthethesamechannel.Theresultofsimulationshowsthatthespectrumexpandingof pi /4-DQPSKissuperiortothatoftheQPSKsystem. Keywords: Pi /4-DQPSK; SystemView; Computeraideddesign (CAD); Matlab)

给出罗杰斯蒂克的分岔图的matlab程序(Rogers Mystic gives the bifurcation diagram of the matlab program)

Calculate hurst and lyupanov exponent from a time serie

read the SAC format

说明：  扩频通信中的两大常见扩频方式，直接序列扩频和跳频(Direct sequence spread spectrum and frequency hopping are two common spread spectrum methods in spread spectrum communication)

说明：  只能控制理论的教学课件，非常经典的教学资料(Control theory can only be teaching, teaching and learning materials is very classic)

系统辨识与MATLAB举例说明 国防科技大学(MATLAB system identification example, the National Defense University)

Image zooming using directional cubic convolution interpolation

Zernike polynomial calcu

ekf和ukf的程序的对比，主要应用于目标跟踪方面(ekfVSukf s programme ,it s fitted to track traget.)