ldpc

此程序主要是根据已知条件，精确绘制两椭圆纯滚动啮合(This program is mainly based on the known conditions, precise drawing two oval pure rolling engagement)

Using the pcolor knowlegde and colormap concatenation technique to create axes objects with different colormaps

用最速下降法求解多维函数的极值 function [x,minf]=minFD(f,x0,var,eps) 目标函数：f 初始点：x0 自变量向量：var 精度：eps 目标函数取最小值时的自变量值：x 目标函数的最小值：minf( With the steepest descent method for solving the multi-dimensional function of the extreme value function [x, minf] = minFD (f, x0, var, eps) target function: f Initial Point: x0 argument vector: var Accuracy: eps target function takes the minimum value of the independent variable values: x minimum target function: minf)

MTI，LFM脉冲串信号，对多目标回波进行脉冲压缩，再进行MTI。(MTI, LFM pulse train signal, multi-target echo pulse compression, then MTI.)

线性系统作业，系统辨识，运用极点配置，LQR，H∞设计状态反馈控制器(Linear system operation, system identification, using pole placement, LQR, H ∞ state feedback controller design)

a PID controller in matlab

广播数据系统技术规范（中国RDS相关技术规范）(Radio Data System Specification (China RDS-related technical specifications))

matlab仿真，对卡尔曼滤波器的性能分析，包括均方误差等(matlab simulation, the performance of the Kalman filter analysis, including mean square error, etc.)

说明：  双PI闭环PWM整流器，可完美运行,网侧THD3.8%，直流侧电压启动超调量1%左右(Double PI closed-loop PWM rectifier, perfect operation, thd3.8% at grid side, 1% of DC side voltage start-up overshoot)

利用Matlab进行卫星伪距定位，根据测量方式的不同，GPS定位的方法也不同，假令在无误差的情况下进行定位，即可利用Matlab将定位问题转化为非线性方程组问题。(Matlab, satellite pseudo-range position, according to the different measurement methods, GPS positioning methods are different, Jialing no error in the case of positioning, you can use Matlab to locate problem into nonlinear equations.)