RSA-Encode-and-Decode

ask信号的产生及其零均值归一化瞬时幅度，ask信号的产生及其零均值归一化瞬时幅度(ask signal generation and zero-mean normalized instantaneous amplitude, ask the signal generation and zero-mean normalized instantaneous amplitude)

用matlab 实现ofdm,输入的是长度为256的随机序列，其中用到了opsk调制，ifft和fft变换(Using matlab realize ofdm, enter the length of the random sequence 256, which uses a opsk modulation, ifft and fft transform)

《matlab扩展编程》语音处理部分的光盘程序("Matlab expansion program" part of the voice processing procedures CD)

说明：  用于根据 三维 数据 点 计算平面度 的 matlab 程序。(According to data points for three-dimensional flatness of matlab calculation procedures.)

交流电机前馈控制的matlab仿真实验，使用的控制器是PID控制器(AC motor feedforward control matlab simulation, PID controller using the controller is)

等间距线性阵列，阵元数M=8，阵元间距d= λ /2，等幅加权，目标方位φr =0°。产生空间白噪声矢量（复高斯分布）。 设阵列信号矢量元素s(m)=exp[j mψr]，其信号幅度为1，该阵元接收机附加的高斯噪声为n(m)=nmr+jnmi，其中实虚部均为独立同分布N(0, σ2)的高斯随机数，则该通道合成信号x(m)=s(m) + n(m)，其中信噪比为： SNR = 10 lg[1/(2σ2)] = – 3 – 10 lg(σ2) (dB) (The spacing of the linear array, and the array element number M = 8, the array element spacing d = λ/2, equal amplitude weighted target azimuth φR = 0. Space generated white noise vector (complex Gaussian distribution). Let array signal vector elements s (m) = exp [j mψr], the signal amplitude, the element receiver additional Gaussian noise n (m) = nmr+jnmi which the real and imaginary parts are independent and identically distributed N ( Gaussian random numbers of 0, σ2), the channel the synthesis signal x (m) = s (m) the PPLS n (m), where SNR is: SNR = 10 lg [1/(2σ2)] =- 3- 10 lg (σ2) (dB))

in this file is distributed system in two case

利用matlab读取ALSO SAR数据并进行成像。(ALSO image reading)

维纳滤波程序，给正弦波信号加入信噪比为20dB的高斯白噪声。(Wiener filtering process, to add a signal to the sine wave signal to noise ratio of 20dB Gauss white noise.)

说明：  Airy光束，基模高斯光束 Bessel光束经过大气湍流相位屏的传输特性(Propagation characteristics of Bessel beam passing through atmospheric turbulence phase screen)