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通信天线建模与MATLAB仿真分析 基本天线仿真，chapter 2 内容(Communications antenna modeling and simulation analysis of the basic antenna MATLAB simulation, chapter 2 content)

本程序是小脑神经网络 作为一个函数的逼近器。作为学习小脑神经网络学习用的。(CMAC neural network)

杨氏双缝干涉 两相干光源到接收屏上P点距离r1=(D2+(y-a/2)2)1/2, r2=(D2+(y+a/2)2)1/2, 满足相干条件的光波叠加后，对于观察屏上某一确定点，即r1、r2确定后，叠加后的光强为 式中λ为光波的波长， 、 ，令相位差φ=2π（r2-r1）/λ, 最后可得公式如下： ， 最后光强I=4I0cos2（Φ/2）。 观察相干光叠加后光强的分布. (Young' s double slit interference two coherent light source to the point P on the receiving screen distance r1 = (D2+ (YA/2) 2) 1/2, r2 = (D2+ (y+a/2) 2) 1/2, meet coherent conditions lightwave after superposition, for a determined point on the viewing screen, i.e. R1, R2 is determined, the superimposed light intensity where λ is the wavelength of light, make the phase difference φ = 2π (R2-R1)/λ, final can be obtained using the following formula: Finally, the light intensity I = 4I0cos2 (φ/2). Observed coherent superposition of light intensity distribution.)

time difference of arrival simulation.TDOA

一个改进的自适应的遗传算法,经测试运行正常.(An improved adaptive genetic algorithm, have been tested and working correctly.)

matlab绘图命令，描述了各种绘图用工具，对matlab新手有很好的指导作用(matlab drawing commands, described in a variety of drawing tools, good for novice matlab guide)

相控阵天线阵列的密度加权matlab程序代码。 运行gui.m文件 lmax.m和lmin.mLinear_func.m最后几行被调用，放在和Linear_func.m路径相同的文件夹下即可 运行后command window里第一条分割线上面是第一幅图的几个值，第二条分割线上面是第二幅图的几个值。其中，peak_first是数值最大的峰值，peak_second是数值第二大的峰值(第一旁瓣)，theta_var是与 peak_first最近的左右两个谷值横坐标的距离。 因为是找半峰值点的，因为都是小数，在数组里没有正好等于主瓣幅值一半的点，只有接近一半的点，所以要设定一个范围比如大0.05或小0.05都认为是半峰值，但是有的数组里0.05的范围还是太小，所以可能报错。(Phased array antenna array the density weighted matlab program code. The last few lines of the run gui.m the file lmax.m lmin.mLinear_func.m call, same placed Linear_func.m path folder above the dividing line of the command window to run the first picture the several values ​ ​ above the dividing line several values ​ ​ of the second image. Wherein, peak_first numerical maximum peak the peak_second is the the numerical second largest peak (first sidelobe), the theta_var is the abscissa and peak_first recent about two valley distance. To find half the peak point are decimal, the array does not just equal to main lobe amplitude half points, only nearly half points, so you want to set a range, such as 0.05 or 0.05 are considered semi-peak some array, but the range of 0.05 or too small, it may be an error.)

对数字调制信号计算循环谱相关，并画出三维图以及二位截面图(Digital modulation signal to the cycle spectral correlation calculation, and draw three-dimensional map, as well as two sections)

利用FFT实现基于MP的信号稀疏分解程序(Using FFT-based signal sparse decomposition process MP)

说明：  多模型PLS算法，用来适应多模型的情况，避免误报漏报(PLS algorithm for multi-model, used to adapt the case of multi-model)