pso

说明：  fira 实物小车的pid调节程序，效果很好，采用积分分离的pid控制器(fira-kind car' s pid adjustment procedures are very good, pid controller with integral separation)

matlab中边频的示例程序，操作简单，可直接复制，便于调用。(side frequency in matlab sample program, simple operation, can be directly copied, easy call.)

功能描述： 小数延迟FIR滤波器，对参考阵元信号signal_ref进行 length(tau) M次延迟，分别得到M个阵元的采样信号 关键问题： 若τ 1.2Ts,则Delay(i) 2,tau_valid(i) 0.2Ts 若τ 0.6Ts,则Delay(i) 1，tau_valid(i) -0.4Ts 当tau_valid(i)>0或<0时，从卷积后的数据y_FIR_delay中取值启示位置不同 函数能够实现输入任意延时tau，输出信号波形与理想波形之间误差很小。( Description: fractional delay FIR filter array element of a reference signal signal_ref performed length (tau) M delay times, respectively, to obtain a sample signal array element M key question: if τ 1.2Ts, then Delay (i ) 2, tau_valid (i) 0.2Ts if τ 0.6Ts, then Delay (i) 1, tau_valid (i) - 0.4Ts when tau_valid (i)> 0 or < 0, the volume data y_FIR_delay product after the Enlightenment values at different positions function can be realized enter any delay error between tau, the output signal waveform and the ideal waveform is small.)

this source code is chp6ex11 matlab link

有限差分方法（网格法）是最早使用的一种电磁场数 值计算方法。 边值问题 物理思想：场域离散。 （连续区域→网格和节点） 数学基础：差分原理。 （微商→差商） 线性代数方程组 §6-3 有限差分方法 作为数值计算方法，有限差分法将连续场域的问题变换 为离散系统的问题（连续场域划分为若干个细小的区域：网 格和节点）。也就是说通过离散化模型上各离散点的数值解 来逼近连续场域内的真实解。(The finite difference method (grid method) is the earliest use of an electromagnetic field the number of Value method. Boundary Value Problems Physical idea: the field of discrete. (Contiguous area → grid nodes) Mathematical foundations: the difference principle. (The Derivative → difference quotient) Linear algebraic equations. § 6-3 Finite Difference Method Numerical methods, finite difference method will transform the problem of the continuous field For discrete systems (continuous field is divided into several small areas: network Grid nodes). That is, the value of the discrete points in the discrete model solution To approximate the true solution of the continuous field domain.)

模拟滤波器，实现模拟信号的FIR滤波，并画出单边频谱图(Analog filters, analog signal FIR filter, and draw the unilateral spectrogram)

这是一个matlab图像处理函数汇总，本人感觉很好，到时可以查就了然于心(This is a summary of matlab image processing function, I feel good, to the clear understanding can check on the heart)

说明：  这是雷达杂波幅度符合对数正态分布的仿真程序，功率谱分布符合高斯谱。(This is consistent with the range of radar clutter lognormal distribution of the simulation program, power spectrum consistent with the Gaussian spectral distribution.)

说明：  MATLAB下生成hilbert矩阵,直接输入一个大于零的参数,就可以生成该矩阵(MATLAB generated hilbert matrix, directly into a parameter greater than zero, we can generate the matrix)

自回归模型相关的东东。(regression models related to the Eastern.)