yichuan

the file contain digital signal processing in matlab.

说明：  MATLAB图像处理工具箱提供了灰度调整函数imadjust()，可以将图像的灰度值调整到一个指定的范围(MATLAB image processing toolbox provides a grayscale adjusting function imadjust (), you can adjust the gray scale image to a specified range)

this file present one of the most popular way to calculate dijkstra distance presentation, especialy for 3D triangulation mesh.

近距离卫星的任务规划。论文中给出了详细的程序设计和Basic以及Matlab程序代码。(Given an initial orbit and a set of other orbits of interest, the path requiring the lowest change in velocity between them is of high value. Software was developed to visualize the change in velocity required from a user defined window of burn to a user defined window of intercept. The time between burn and intercept is unrestricted. Multiple intercepts require searching an n! solution space. Research then is focused on ways to pick optimal choices without fully calculating out the cost of doing all possible combinations. Some code was translated from BASIC and the rest was newly developed in MATLAB. The code was validated using orbits with known intercept solutions.)

ann code with 2 transfer function

进行emd分解，画边界谱，数字信号处理的基本程序(A basic program for EMD decomposition, boundary spectrum, and digital signal processing)

matlab：距离方程、线性调频、雷达波形、动目标显示、脉冲压缩、编码波形、伪随机序列、SAR、RCS(matlab: from the equation, linear frequency modulation, radar waveform, moving target indication, pulse compression, encoding waveform, pseudo-random sequence, SAR, RCS)

计算一维光子晶体透射率的程序, 可以手动输入任意序列, 程序只针对两种介质组成的序列.(One-dimensional photonic crystal transmission process, you can manually enter any sequence, the program only for sequences composed of two media.)

本程序是用MATLAB编写的用于仿真通信系统中信号经过QPSK和16QAM调制后，通过高斯白噪声和瑞利衰落信道的星座图仿真(This program written by MATLAB is for the students who are studying telecommunication.It s very useful to simulate the signal constellation.)

说明：  矩形波函数，计算其频谱，幅度谱和相位谱，与理论值比较。(Rectangular wave function to calculate the frequency spectrum, amplitude spectrum and phase spectrum, compared with the theoretical value.)