Merrien-J.-L

自动绘制PDB分子结构的matlab脚本程序包 界面友好，图像很精美。(Automatic drawing PDB molecular structure of matlab scripts package user-friendly, image is very beautiful.)

合成孔径雷达成像代码以及噪声干扰代码，主要是SAR的RD算法以及射频、调相、调频、调幅噪声(Synthetic aperture radar imaging code and noise code, mainly is the SAR, RD algorithm and radio frequency, phase modulation, frequency modulation, amplitude modulation noise)

使用costas环实现载波同步，绘制出了载波频率跟踪曲线(Achieve carrier synchronization using the costas loop, draw the curve of the carrier frequency tracking)

最优化算法中的带有Wolf搜索求步长的拟牛顿算法求最优值的源码，matlab编程实现，希望对大家有用。(Optimization algorithm with Wolf to the search requirements step quasi-Newton algorithms to find the optimal value of the source code, Matlab programming, and hope to be useful.)

Audio filter for Matlab How is it working? 1) Take the current samples and some previous samples (which previously had been stored) for multiplied by a factor defined. 2) Take the output values in past moments and multiply by other factors. 3) Finally, all the results of all these multiplications are added, giving an outlet to the current moment.

communication system is expected to increase the service, the quality improvement and also the capacity, using spread spectrum communication system is one of the method to fulfill that demand. This quality and capacity factor will depend on the number of user. In order to see the performance of the Wiener Filter on the MC-CDMA system, simulation method is used by increasing the Direct Sequence Spread Spectrum CDMA signal, with digital modulation QPSK

数字信号处理中，几个实验的matlab原代码。(Digital signal processing, Matlab several experiments the original code.)

使用时域有限差分法编写的计算散射截面的简单程序(Scattering cross section is calculated using a simple program written in finite difference time domain method)

对小波信号进行去噪处理，主要采用分层重构，软硬阀值的方法进行仿真。(To deal with the noise of the wavelet signal, mainly adopts hierarchical reconstruction, hard and soft threshold method are simulated. )

说明：  用来进行双边带幅度调制DSB_AM的MATLAB源程序。(Demonstration script for DSB-AM. The message signal is+1 for 0 < t < t0/3,-2 for t0/3 < t < 2t0/3, and zero otherwise.actually means Rx(m-1). )