Ch7figs

This is a program to study the dynamic instability of cylindrical shell due to parametric excitation.

仿真图是速度、距离、幅度三维图像，预报误差法参数辨识-松弛的思想，合成孔径雷达（SAR)目标成像仿真。( FIG simulation speed, distance, amplitude three-dimensional image, Prediction Error Method for Parameter Identification- the idea of relaxation, Synthetic Aperture Radar (SAR) imaging simulation target.)

gold序列应用于跳频系统，给出了误码率曲线(gold sequence applies to frequency-hopping system, give a bit error rate curve)

ESPRIT的谱估计算法，含有自动定阶，设置相应参数即可直接运行。(ESPRIT algorithm for spectral estimation, with automatic set-order, set the corresponding parameters can be directly run.)

finite difference time domain 2d code

说明：  主要是些简单的数字图像处理中基本的知识点(Mainly some simple digital image processing knowledge of the basic points)

matlab对平面图读取，提取矩阵，转化为彩色三维图，并选择所需区域(Matlab to plan to read and extract matrix, into color three dimensional figure, and select the required area)

It is a matlab simulation code about OFDM

预测控制 MPC DMC重要参考资料 模型预测控制入门级宝典 很有借鉴意义。(MPC DMC is an important reference for the predictive control model predictive control entry-level book very useful.)

用Matlab实现的DES算法。在Matlab窗口输入DESDECP(a,b,n),其中a，b表示16进制的明文和密钥，n为1表示加密，否则表示加密。(DES algorithm using Matlab. In Matlab window field DESDECP (a, b, n), where a, b indicates a hexadecimal plaintext and key, n is 1 shows an encryption, or that encryption.)