shallow_water_2d

matlab的主要编程的函数命令,简洁明了,适合初学者!(matlab a function of the main programming command, concise, suitable for beginners!)

分析了计算四波混频效率的表到式在考虑非线性相位失配因子和不考虑非线性相位失配因子两种情况下，四波混频效率计算的差别(Analysing the expression of DFWM in the optical fiber under the consideration of nonlinear phase mismatch factor, then comparing the result to the expression which includes only linear phase mismatch factor.)

用matlab进行图像处理程序，可对图像进行对比度、灰度处理。(Matlab image processing procedure, but the image contrast, gray processing. )

说明：  MATLAB课堂考勤（GUI） 该课题为基于MATLAB pca的人脸考勤系统。可以从一副图像中找出多人人脸，分割，计算人数，然后提前制作好这些人的人脸库，进行逐一识别是谁，是不是库内人脸，如是，具体是谁，如果不是，那提示库外人脸。具有友好的人机交互界面，还可以二次开发成摄像的，但是摄像头误差可能会有点。识别流程为：读取图像，人脸定位，人数统计，人脸分割，人脸识别，库内外判别。(The subject is face attendance system based on MATLAB PCA. We can find multiple faces from an image, segment and calculate the number of people, and then make a face database of these people in advance to identify who they are one by one, whether they are the faces in the database, if so, who they are, and if not, prompt the faces outside the database. It has a friendly human-computer interface and can be developed into a camera again, but the camera error may be a little bit. The recognition process includes: image reading, face location, number of people statistics, face segmentation, face recognition, identification inside and outside the database.)

说明：  利用Matlab编写求取4级移位寄存器的M序列 设初始序列为:1 1 1 1 通过一个四级的移位寄存器,其中在第三级有负反馈(一个模二加法),即将序列的第三位和第四位相加(如序列1 1 1 1经移位寄存器第一次移位后为0 1 1 1)的值再赋到第一位. 序列的周期为16.(The use of Matlab to prepare to strike four of the M shift register sequence based initial sequence as follows: 1 1 1 1 4 through a shift register, which in the third grade there is negative feedback (one-mode two adder), the upcoming series third and fourth combined (such as the sequence 1 1 1 1 by the shift register after the first shift for the 0 1 1 1) the value given to the first again. The cycle sequence was 16.)

基于fft和二进小波编写的二维小波多孔算法图像分解，效果不错(Fft and based on dyadic wavelet algorithm for the preparation of porous two-dimensional wavelet image decomposition, good results)

Small scale HPP optimization

说明：  卡尔曼滤波相关代码，内含线性卡尔曼，扩展卡尔曼，无迹卡尔曼，交互多模型卡尔曼的代码(Kalman filter related code, including linear Kalman, extended Kalman, unscented Kalman, interactive multi model Kalman code)

qrd_rls_AR_pred.m - use the QR decomposition-based RLS algorithm to predict complex-valued AR process.(qrd_rls_AR_pred.m- use the QR decomposition-based RLS algorithm to predict complex-valued AR process.)

建立响应面模型，通过已知的方程组建立一个响应面模型(Building a response surface model. A response surface model is established through the known equations.)