time_delay

通信仿真，二元位信号通过加性高斯白噪声的信道，经过匹配滤波，最大后验概率和最大似然概率检测比较(Communication simulation, binary bits signals through the additive gaussian white noise, through the channel is matched filtering, maximum a posteriori probability and the maximum likelihood detection probability)

在王煜程序基础上的，简化的水平集拓扑优化。(topology optimization based on level set method using upwind scheme,)

说明：  图像阈值分割技术在图像分割中具有重要的意义。遗传算法既可以对全局信 息高效利用，也减少了存储空间和计算量。利用遗传算法的优点，提出了一 种用改进遗传算法的图像分割的方法，可以将父代中适应度大的个体代替当前代 中的个体，保证了可以选出最优的个体。遗传算法是具有鲁棒性和自适应性的搜 索方法.通过实验对比，表明该方法具有快速、稳定分割的特点。(Image threshold segmentation technology is of great significance in image segmentation. Genetic Algorithms can be used for global information Efficient utilization of information also reduces storage space and computation. Based on the advantages of genetic algorithm, a new genetic algorithm is proposed. A method of image segmentation based on improved genetic algorithm can replace the current generation with individuals with large adaptability in the parent generation. The individual in the system ensures that the best individual can be selected. Genetic Algorithms are Robust and Adaptive Search The experimental comparison shows that the method has the characteristics of fast and stable segmentation.)

说明：  语音信号的端点检测程序，有解释，自己测试过能用，希望对初学者有一定帮助！(Endpoint detection of speech signal process, to explain that he tested can, want to have some help for beginners!)

this is about optimization papaer

计算BPSK在AWGN下得误码率。其中，设置高斯白噪声的功率为1，也即是归一化功率(calculate the BER of BPSK under AWGN channel)

基于互信息的图像配准程序。用matlab编写的。有助于理解互信息。(based on mutual information of image registration procedures. Prepared using Matlab. Contribute to the mutual understanding of the information.)

灰色预测 可以在数学建模中使用 可以运行。 (Grey prediction)

说明：  计算棱镜SPR传感器透射率，包括角度扫描和波长扫描两种模式。(Calculation of transmittance of prism SPR sensor)

program for database creation