FSK

this model simply a shows the variation of dc machine torque and speed when supplied by controlled rectifier in open loop.

这里我们针对三级固体火箭进行研究，主要考虑每一级发动机工作时推力 和比冲 与发动机试车存在摄动偏差（相差 ）时所产生火箭关机点时刻的状态偏差。火箭的飞行的动力学方程可建立在地面发射坐标系中，火箭的第一级、第二级和第三级按照固定的俯仰角程序飞行，第二、三级飞行时已在大气层外，此时可忽略气动力的影响。(Here we study for three solid rocket, the main consideration at every level when the engine thrust and state arising the moment the rocket off point perturbation deviation (difference) in the presence of specific impulse and engine test bias. Outside of the rocket flight dynamics equations can be established on the ground coordinate system launch, the rocket s first stage, the second and third stages according to a fixed elevation angle of flight procedures, and the second, when the third flight already in the atmosphere, this when can ignore the effects of gas dynamics.)

在bmp图像中隐藏另一图像，希望对大家有用！(bmp image in another hidden images, useful for all!)

PID控制matlab仿真，在输入分别为阶跃和正弦函数下的响应曲线，绘制输入与实际对比图(PID control matlab simulation, in the input of the step and sine function under the response curve, drawing the input and the actual comparison map.)

说明：  基于matlab中的simulink，进行16QAM的仿真搭建。包括了基带信号发生器，串/并模块，模块1，载波调制模块，高斯白噪声信道，模块2，误码率计算器等，能够较好地实现16QAM的调制解调。(Based on the Simulink of MATLAB, the simulation of 16QAM is built. It includes baseband signal generator, serial / parallel module, module 1, carrier modulation module, Gaussian white noise channel, module 2, bit error rate calculator and so on. It can achieve 16QAM modulation and demodulation well.)

matlab的操作相关介绍书籍，手册指导完成简单的matlab操作(matlab introduce the operation of related books, manuals to guide the completion of a simple operation matlab)

beam and ball simulation

Discrete cosine transform designed using matlab

本程序是用matlab编写创建稀疏矩阵结构(This program is created using matlab sparse matrix structure)

pca code for calculation of pca