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单相三电平SPWM瞬时电流调制，版本MATLAB7.0，效果好，附有不同负载下的切换运行功能(single phase three level SPWM control with different load)

采用混沌序列和小波变换相结合的方式实现对数字图像的加密(A combination of chaotic sequences and wavelet transform digital image encryption)

去斜率（strech）参考信号与回波信号混频后得到中频输出信号S(t)=Aexp(j*2*pi*f0*t+phase) 其中f0与回波延时的关系为： f0=k*delay_t K为线性调频斜率，delay_t为回波延时 将s(t)采样，FFT变换即可得到目标距离与频谱的关系。 Strech 信号测距 输入混频后的中频信号（图一），经采样及FFT变换得到频谱（图二） 再根据频谱与距离的关系式R=Tcf/2B显示出距离(图三) (Go slope (strech) obtained after the reference signal and the echo signal mixer IF output signal S (t) = Aexp (j* 2* pi* f0* t+phase) f0 and echo delay relationship: f0 = k* delay_t K chirp slope, delay_t the echo delay sampling s (t), the FFT transform to the target distance spectrum of relations. Strech signal ranging input mixer IF signal (Figure 1), sampling and FFT transform spectrum (Figure 2) according the the spectrum distance relationship R = Tcf/2B shows the distance (Figure 3))

说明：  根据归一化后的原始数据曲线，运用自组织神经网络进行藻种识别(According to the normalized data,we identify the HABs using the SOM.)

利用matlab的m文件，仿真DPSK的差分相干解调法，从发送数据到接收数据，比较完整(Use matlab m files, simulation DPSK differential coherent demodulation method to send data to receive data from a relatively complete)

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用matlab实现的在三角形网格上将隐式曲面转化成参数曲面(Will be used in the triangular mesh implicit surfaces matlab realize converted into parametric surfaces)

i am uploade matlab code for perfomance analysis of OFDM systyem using different modulation scheme.it simulatoion result is so interesting to propose the modulation scheme when OFDM system is use in application .

双光纤耦合器的建模仿真，对耦合器的透过率参数分析研究(Dual optical fiber coupler of modeling and simulation of coupler transmittance analysis of parameters)

stimulation of voice traffic using matlab