envelope

《精通matlab》（张志勇北航）。内容详尽，是进一步学习matlab较好的工具(" Proficient in matlab" (Zhang Zhiyong Beihang). Detailed, is a good tool for further learning matlab)

matlab 用于人口模型的研究 涉及到阻滞增长模型 (matlab renkou)

看了一段时间的3GPP的信道建模，所以自己动手写了一个（参考了该协会的标准代码，不过改良了一些，执行效率更高）(the 3GPP SCM model building. Comparing to the original code, this task is more efficient and clearer.)

基于matlab的gmsk的调制解调，对于通信专业有很大用处(The gmsk based modulation and demodulation matlab, very useful for communications professionals)

simulink实现bpsk的均衡技术，这里用的是mlse均衡器，看起来简单，其实这里包括了调制，解调，多径和均衡等技术(simulink realization of the balanced BPSK technology, here is the MLSE equalizer, looks simple, in fact, here including the modulation, demodulation, multipath and balanced technical)

水面无人船舶航迹跟踪控制的级联反步法仿真程序，源创代码(The water no one cascade of anti-ship trajectory tracking control step simulation program, the source of a code )

说明：  此模型为双向DCDC，可用于电池充放电，燃料电池升降压模拟等。采用PWM控制IGBT管占空比。可直接运行，在其基础上修改简单(This model is a bidirectional DCDC, which can be used for battery charging and discharging, fuel cell buck-boost simulation. PWM control of the IGBT tube duty cycle. Can be run directly, modify it on the basis of simple)

images and logfile messages

随机场模拟,这个程序适用于地震动的随机合成，虽然很简单，却很具有实际意义(Random simulation)

方程的数值解法，包含牛顿迭代法和基于牛顿法的史蒂芬森加速法。matlab实现，注释很详细。(Numerical solutions of equations containing the Newton iteration method and newton-steffensen method.Matlab, very detailed comments.)