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产生持续固定持续时间的正弦脉冲并绘制出其频谱图 (Have a fixed duration of continuous sinusoidal pulse and frequency spectrum to map out its)

This module will calculate the electrical angle between two different signals (Normally current + Voltage). once the first siganl as a reference signal and once the second signal as a reference signal.

粒子群算法Rastrgrin实现寻优，利用一具体案例得出寻优结果(Particle swarm optimization algorithm Rastrgrin realized using a specific case optimization results obtained)

画出下述情况下均匀线阵方向图 1）计算来波方向为0度方向图 2）画出来波方向为45度时的方向图 3）画出来波方向为0度，幅度取分贝数：20log***（单位为dB）时的方向图 4）画出来波方向为0度，随着阵元数的增加，当N=16，N=32时的方向图，并对方向图的变化情况进行说明(Draw the following conditions uniform linear array 1) calculation of wave direction is 0 degrees direction diagram 2) draw out the wave direction is 45 degrees direction map 3) draw out the wave direction is 0 degrees, and amplitude decibels: 20log*** (unit dB) when the direction of FIG. 4) draw out the wave direction is 0 degrees, with the increase of the number of array elements, when N=16, N=32 pattern, and the change of direction is described )

一些干涉仪算法的代码，包括music算法，DOA估计，干涉仪测方位角(Code for some interferometer algorithm，such as MUSIC algorithm, DOA estimate)

2D周期性圆柱组成的，lens的几何设计和delay的计算，使用各项同性圆柱(2D periodic cylinder’s delay)

fdtd2D simulationby matlab

this is some script files and functions that introduce finite element method to start

MATLAB中文帮助.chm 如果你是MATLAB的初学者，你应该从阅读矩阵操作开始。最重要的是要学习如何输入矩阵，如何使用：（冒号）算子，以及如何调用函数。 在你掌握了基础之后，你应该阅读其他章节并运行实例。(MATLAB Chinese help. Chm If you are a MATLAB beginner, you should read the matrix from the start operation. The most important thing is to learn how to enter the matrix, how to use: (colon) operator, and how to call the function. You mastered the basic, you should read the other sections and run the examples.)

1、观察采样引起的混叠。 2、判别离散时间系统的时不变性。 3、利用卷积计算信号通过FIR滤波器的输出，并观察输出信号的input-on暂态、input-off暂态和稳态阶段。 (One to observe the sampling due to aliasing. 2, determine the time invariant discrete-time systems. 3, the use of convolution calculation of the signal through the FIR filter output, and observe the output signal of the input-on transient, input-off transient and steady-state phase.)