PM

详细讲述了直接序列扩频差分锁相环的文章，包含具体的算法结构，并附有仿真结果。(A novel differentially coherent delay-locked loop(DCDLL) for accurate code tracking is proposed for direct sequence spread spectrum systems. Due to the use of the differential decoder and exactly one correlator, the proposed scheme avoids the problems of gain imbalance. The tracking error variance is derived by linear analysis. When the proposed DCDLL scheme is applied in ranging with additive white Gaussian noise (AWGN) channel, the performance of the proposed DCDLL scheme is about 1.4 dB better than that of one-correlator tau–dither loop (TDL), and near that of noncoherent DLL.)

这是一个基于matlab另一种方法编写的梁的有限元程序，可以用于初学有限元程序的人参考。(this is a matlab program used for cantilever calculation, it can be used for a fresh hand to reference.)

解常微分方程的Matlab程序 字符串ypfun是用以表示f(t, y)的M文件名, tspan=[t0, tfinal]表示自变量初值t0和终值tf y0表示初值向量y0，可选参数options为用odeset设置精度等参数。 输出列向量tout表示节点，输出矩阵yout 表示数值解，每一列对应y的一个分量。若无输出参数，则作出图形。(Solution of ordinary differential equations of the Matlab program is used to indicate ypfun string f (t, y) M-file name, tspan = [t0, tfinal] said that since the variable t0 initial and final values of tf y0, said initial vector y0 , optional parameters to set options for the use of odeset accuracy and other parameters. The output column vector tout that node, the output matrix yout that of numerical analysis, each column corresponds to y of a component. If there are no output parameters, then make a graph.)

卡尔曼滤波的源代码，里面包括了权向量的计算以及MSE的偏差曲线(Kalman filtering of the source code, which includes the calculation of the weight vector and the MSE deviation curve)

Member-function definitions for class Account. 源代码(Member-function definitions for class Account. Source code)

绘制自旋航天器的相平面图形，改变参数可以绘制不同情况下的姿态(Draw spacecraft spin phase planar graph, changing the parameters can be plotted attitude under different circumstances)

主动时反通信结合复域方法的MATLAB仿真。(When combined with active anti-communication complex domain method MATLAB simulation.)

Quadrature Phase Shift Keying is a form of Phase Shift Keying in which two bits are modulated at once, selecting one of four possible carrier phase shifts in 0, 90, 180, or 270 degrees

point rotation using Quaternion. implementation in matlab. Program is a tool to rotate poin in Cartesian coordinates in three dimensions about any angle. Run moje2.m

利用MATLAB分帧读取avi视频文件，并播放视频文件。附视频文件(Use MATLAB to read sub-frame avi video files and audio-video files. Attached to video files)