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本资料主要针对C语言学习中比较难不易理解的地方(This information is mainly for the C language learning more difficult in places difficult to understand)

通过VC++编写客户端，测试FastCgi程序-Through the VC++ to prepare the client, test procedures FastCgi

说明：  画干涉波 借以模拟物理中的相关现象 (To simulate the physical picture of interference related phenomena in)

改进的帧间差法运动目标追踪算法,比以前的经典算法有改善，不会出现边框锁定到边远的情况(Improved inter-frame difference method moving target tracking algorithm)

一个基于RTP协议的例子-an agreement based on the example of RTP

信道为瑞利信道，S_D的距离为1米，三跳协作通信系统中S_R、R1_R1、S_D的距离均为1/3米。调制方式为BPSK,信噪比在-15dB-15dB间，接收端合并方式为ERC,迭代次数为1000(The channel is Rayleigh channel, the distance of S_D is 1 m, and the distance of S_R, R1, S_D in three-hop cooperative communication system is 1/3 M. The modulation mode is BPSK, the signal-to-noise ratio is between - 15dB and 15dB, the receiver merge mode is ERC, and the number of iterations is 1000.)

airy光束的相位全息图，对于需要用SLM生成airy光的人很有帮助(Phase hologram of Airy beam)

VC++调用Excel表格编辑数据的功能，一打开就显示Excel风格的表格(VC++ calling function Excel spreadsheet editing data, an open style on display Excel spreadsheet)

搭建永磁同步电机的直接转矩控制仿真模型 1，实测电流经过3/2变换得到alpha-beta轴上的电流； 2，估计模块中包含定子磁链和电磁转矩的估算，其中，定子磁链观测是采用基于转子位置和定子电流的磁链估计，电磁转矩直接在alpha-beta轴上计算； 3，转速调节模块和转矩调节模块直接采用PI调节器； 4，预期电压矢量估计模块，根据k时刻的磁链幅值与相位和k+1时刻的磁链幅值和相位计算出来的； 5，SVMPWM是空间电压矢量调制模块，实现空间任意角度任意大小的电压矢量，从而控制磁链轨迹近似为圆型； 6，逆变器模块和电机模块均采用系统自带的；(Build a permanent magnet synchronous motor direct torque control simulation model, the measured current after 3/2 transform the current alpha-beta axis estimated module included in the estimation of the stator flux and the electromagnetic torque, stator flux chain observation is based on the position of the rotor and the stator current flux estimates, the electromagnetic torque directly in the alpha-beta axis 3 speed controller module and torque adjustment module directly using the PI regulator expected voltage vector estimation module , calculated according to the time k flux amplitude the phase and k+1 time flux amplitude and phase 5, SVMPWM the space voltage vector modulation module voltage vector space at any angle of any size, thereby controlling the flux path approximate round inverter module and motor module system comes )

高动态模型，加加速度，加速度和速度都可以改变，仿真出多普勒频偏变化和相位变化。(High dynamic model of acceleration, acceleration and speed can be changed, the simulation of doppler frequency and phase changes.)