ex4

相控阵天线的方向图（切比雪夫加权），考虑雨衰 阴影 和多径影响，搭建OFDM通信系统的框架，一个很有用的程序，本程序的性能已经超过其他算法。( Phased array antenna pattern (Chebyshev weights), Consider shadow rain attenuation and multipath effects Build a framework OFDM communication system, A very useful program, This program has exceeded the performance of other algorithms.)

说明：  基于密度峰值的快速聚类算法在matlab中的实现(Realization of fast clustering algorithm based on density peak in MATLAB)

ABB保护算法程序 判别故障发生在区内区外的matlab编程(ABB discrimination of the fault protection algorithm program in the region outside of matlab programming)

《我们最幸福：北朝鲜人民的真实生活》（英语：Nothing to Envy: Ordinary Lives in North Korea）是《洛杉矶时报》记者芭芭拉·德米克（Barbara Demick）访问6位来自朝鲜清津市的脱北者后，于2009年出版的半小说形式报道文学书籍。("We are most happy: the real life of the people of North Korea" (English: Nothing to Envy: Ordinary Lives in North Korea) is the "Los Angeles Times" reporter Barbara Demick (Barbara Demick) Access 6 from North Korea Chongjin after the defectors, published in 2009 in the form of semi-fiction books literature reports.)

可编程程序wanglihong 的可执行蒙特卡罗程序(the complete Monte Carlo-ari)

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.)

本文对软件开发中编码作了统一的规定，除非约定发生改变，程序员必须遵守这些约定。(This paper made a unified software development code provisions, unless the agreed changes, the programmer must comply with these conventions.)

可以方便的求极限，对于matlab的初学者有用。(limitation)

analog digital conveter with matlab

对于不同的检测距离，雷达对应脉冲宽度相对所要求的信噪比SNR曲线。(The different detection distances corresponding to the pulse width of the radar relative to the SNR required for the curve.)