guidedfilter

实现世界地图的显示，可以任意控制地图的显示范围，效果不错。(Achieve world map display, you can control the map display any range of effectiveness.)

说明：  LMI 在MATLAB的應用 幫助初學者進入LMI的世界(LMI in the application of MATLAB)

4th generation long term evolution based on 3rd generation partnership program

Welsh.m为着色问题中的Welsh-Powell算法程序，并且sortd.m为其中调用的一个排序子函数。(Welsh.m coloring problem in the Welsh-Powell algorithm program and sortd.m call for which a sort subroutines.)

convex_round-hole 光波透过圆孔模拟透镜成像效果(convex_round-hole wave through the hole simulation results lens imaging)

Convex Optimization.----Stephen Boyd(Convex Optimization.---- Stephen Boyd)

去斜率（strech）参考信号与回波信号混频后得到中频输出信号S(t)=Aexp(j*2*pi*f0*t+phase) 其中f0与回波延时的关系为： f0=k*delay_t K为线性调频斜率，delay_t为回波延时 将s(t)采样，FFT变换即可得到目标距离与频谱的关系。 Strech 信号测距 输入混频后的中频信号（图一），经采样及FFT变换得到频谱（图二） 再根据频谱与距离的关系式R=Tcf/2B显示出距离(图三) (Go slope (strech) obtained after the reference signal and the echo signal mixer IF output signal S (t) = Aexp (j* 2* pi* f0* t+phase) f0 and echo delay relationship: f0 = k* delay_t K chirp slope, delay_t the echo delay sampling s (t), the FFT transform to the target distance spectrum of relations. Strech signal ranging input mixer IF signal (Figure 1), sampling and FFT transform spectrum (Figure 2) according the the spectrum distance relationship R = Tcf/2B shows the distance (Figure 3))

说明：  用matlab实现FIR低通滤波器的设计(Using matlab to achieve the design of FIR low-pass filter)

对变压器噪声信号的频谱分析，对比matlab中功率谱分析的各种方法，并显示频谱分析结果图(Transformer noise signal spectrum analysis, power spectrum analysis of the various methods matlab contrast and displays the results of spectral analysis chart)

说明：  《实战Matlab之并行程序设计》程序代码，教材的附录代码，可供大家根据课本学习使用("Practical Matlab Parallel Programming" program code, appendix code of the textbook, for everyone to learn and use according to the textbook)