program2

在地震勘探中，我们可以利用正演程序实现野外资料采集的模拟，这个程序是利用波动方程的方法对地震波的传播过程进行模拟。(In seismic exploration, we can use the forward program implements the analog field data collection, this program is the use of the wave equation method for seismic wave propagation simulation.)

用Matlab编写的功率谱估计，输入数据是100年太阳黑子活动记录，用周期图法、最大熵值估计（AR法及Burg法），画出信号功率谱进而算出太阳黑子活动周期。(Matlab prepared using power spectrum estimation, input data is 100-year record of sunspot activity, using periodogram method, the estimated value of maximum entropy (AR Law and Burg method), draw the signal power spectrum and then calculate the sunspot activity cycle.)

• Plot the noisy speech signal both in time-domain and frequency-domain. • 进行含噪语音信号的时频分析 • Design a proper filter to remove noise from the speech signal. • 设计合适滤波器进行去噪 • Plot the clean signal both in time-domain and frequency-domain. • 进行去噪后信号的时频分析 • Design a Reverberator using 4 Comb filters and 2 All-pass filters, as shown in the following Figure, to generate reverberated and reflected sound with the capability of passing it through an equalizer. • 设计一个混响器（用四个梳状滤波器和两个全通滤波器（下图所示））来产生回声（通过一个均衡器（用于调整频率的补偿和衰减））

说明：  利用Matlab语言实现三次样条曲线，并且有GUI图形显示，是数值分析的基础(THE code use Matlab，come ture spline )

vblast matlab仿真，串行干扰抵消，经过matlab测试可用(vblast matlab simulation, serial interference cancellation, after the test can be used matlab)

说明：  基于小波变换自适应水印图像的（提取） matlab编程实现(Adaptive watermarking based on wavelet transform image (extract) matlab programming)

Test function : f= x+10*sin(x.*5)+7*cos(x.*4) Aim to get its max value( Test function: f = ' x+10* sin (x.* 5)+7* cos (x.* 4)' Aim to get its max value)

这是图像配准中sift方法的matlab程序，里面有介绍如何使用该程序的文档。(This is the image registration method in the sift matlab, there are introduce how to use the program document. )

针对基本快速扩展随机树(RRT)算法存在搜索过于平均、效率低下、用时较长的缺陷，提出了一种偏向目标型的改进型RRT算法。这种算法在生成随机点时以一定概率选择最终目标点作为局部目标点，使树的扩展有一个趋向于最终目标点的趋势，从而加快了算法的收敛速度，优化了规划路径(For basic fast Random Tree (RRT) search algorithm exists too mean, inefficient, long time with defects, we proposed a goal-biased improved RRT algorithm. This algorithm when generating random points with a certain probability of selecting a final destination point as a local target, enabling the expansion of the tree has a tendency to trend the final destination point, thereby speeding up the convergence of the algorithm, optimized route planning)

说明：  导体柱对TE波的散射:求无限长金属圆柱在TE平面波入射情况下表面电流及RCS(the exact solution of a conducting cylinder s surface current and RCS)