X5

说明：  运用物理光学法和矩量法计算带罩天线的远场辐射。(use of optical physics and Moment Method band antenna covers the far field radiation.)

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))

最小二乘支持向量机是基于统计学习对小样本、非线性建模的一种完善的方法，本算法，实现了最小二乘支持向量机的回归问题的应用(LSSVM are based on small samples statistical learning, a well-established method of nonlinear modeling of this algorithm, the least squares support vector machine regression Application)

说明：  A GUI matlab model for getting the ionex value

比较简单的灰度图像锐化源代码，相信学习数字图像处理的童鞋能用到(Gray image sharpening relatively simple source code, I believe that children' s shoes to learn digital image processing can be used to)

polar code simulation result

常用matlab的程序，对于初学者是非常有意义的。(The most commonly used MATLAB program for beginners is very meaningful.)

Model of a DC-DC converter

胡广书版数字信号处理matlab代码，维纳滤波器等学习源码(digital signal processing matlab code, Wiener filter and other learning source)

TD-SCDMA中初始同步捕捉DwPTS下行同步导频时隙的仿真(TD-SCDMA downlink in the initial synchronization to capture DwPTS pilot slot in the simulation of synchronous)