超声2维成像，运用DAS算法

对图像进行增强处理的车流量检测算法，图像锐化，背景差分，膨胀腐蚀等一系列数学形态学操作(The image enhancement processing of the traffic flow detection algorithm, image enhancement, background difference, expansion and a series of mathematical morphology erosion operation)

汽车发动机万有曲线绘制，等燃油消耗率曲线和等功率曲线的三维拟合图(Automobile engine all curve drawing )

this file contains a matlab code for rout planing motion.

LTE上行双用户matlab仿真代码，用户单天线，基站8天线。(LTE uplink dual-user matlab simulation code, user single antenna, base station 8 antenna.)

说明：  numerical solution on PDE

APF的模型，采样ip-iq法进行谐波提取，PI控制作为补偿算法，三电平spwm作为调制方式，在网侧添加了LCL滤波，个人感觉效果还不错，准备再添加重复控制，在谐波提取方面采样DFT来尝试(APF model, sampling ip-iq method for harmonic extraction, PI control as compensation algorithms, three-level spwm as modulation, the network side added a LCL filter, the effect of personal feeling good, ready to add a duplicate control, in harmony wavelet extraction areas to try sampling DFT)

Calculates the result of Euler s Phi funtion for any natural number less than 10^18.

steganography in wav files

结构分析的有限元法与matlab程序设计4-1(Structural analysis of the finite element method and matlab programming 4-1)

OFDM信号及其频谱的matlab仿真源代码，输入信号为随机产生的二进制序列并插入了保护间隔(OFDM signal and its spectrum simulation matlab source code, the input signal for randomly generated binary sequence and insert a guard interval)