fresneldifferaction

matlab函数列表以及功能说明，非常实用(matlab function lists, and feature descriptions, very useful)

LDPC decoder for Chinese DTV standard. This code works for all code rate,only need to change is Paritycheck matrix.I have tried with 1/2 code rate.

说明：  CIC滤波器的补偿，适用于抽取内插滤波器的设计，写昂对大家有用(CIC compensation filter, applied to extract the design of interpolation filters, write Aung useful for everyone)

The codes implement two algorithms Multilinear Principal Component Analysis (MPCA) and MPCA+LDA

curvelet generation subprogram

NaSch模型MATLAB程序,交通流，单车道元胞自动机模型的程序实现(Program MATLAB NaSch model , traffic flow, lane cellular automaton model )

SVPWM是近年发展的一种比较新颖的控制方法，是由三相功率逆变器的六个功率开关元件组成的特定开关模式产生的脉宽调制波，能够使输出电流波形尽可能接近于理想的正弦波形。空间电压矢量PWM与传统的正弦PWM不同，它是从三相输出电压的整体效果出发，着眼于如何使电机获得理想圆形磁链轨迹。SVPWM技术与SPWM相比较，绕组电流波形的谐波成分小，使得电机转矩脉动降低，旋转磁场更逼近圆形，而且使直流母线电压的利用率有了很大提高，且更易于实现数字化。(SVPWM is a novel control method developed in recent years. It is a pulse width modulation wave generated by a specific switching mode consisting of six power switching elements of three-phase power inverters, which can make the output current waveform as close as possible to the ideal sinusoidal waveform. Space voltage vector PWM is different from traditional sinusoidal PWM. It is based on the overall effect of three-phase output voltage, focusing on how to obtain the ideal circular flux trajectory of the motor. Compared with SPWM, the harmonic component of winding current waveform is smaller, which reduces the torque ripple of motor, makes the rotating magnetic field more close to the circle, and improves the utilization ratio of DC bus voltage greatly, and makes it easier to realize digitization.)

说明：  ：用NRTL方程，对二元混合物的气一液相平衡数据和液一液相平衡数据进行关联，并用液一液相平衡数据优化所得的参数，预测汽液相平 衡．关联和预测的结果均能满足程设计要求(: The NRTL equation, the binary mixture of gas-liquid phase equilibrium liquid-liquid phase equilibrium data and the data associated with liquid-liquid phase equilibrium data to the optimum parameters to predict vapor-liquid equilibrium. Correlation and prediction results can meet the design process)

本例主要说明了空间域滤波与频域滤波的比较！在空间域中采用了Sobel掩膜对f滤波的结果与在频域中进行等价操作的结果！(This example illustrates the spatial filtering mainly with the comparison of frequency domain filtering! In the spatial domain using the Sobel filter mask on the results of f in the frequency domain is equivalent with the result of the operation!)

比较四分量信号的不同时频分布结果,小波分析。(Compare the results of time-frequency distribution of the four components of the signal)