pls

北京理工大学理学院物理系大学物理演示实验的结果和过程(Beijing University of Technology Department of Physics, Physics Institute of the results and the process of demonstration experiments)

自适应PID在过程控制中的应用研究_孙泽勇1(Adaptive PID control application in process research _ Sun Zeyong a)

计算混沌系统三维利亚普诺夫指数谱的方法，可通用，可自动改为四维五维等(Chaotic computing spectrum three Weiliyapu Ivanov index method can universal, can be automatically changed to four-dimensional five-dimensional, etc.)

基于普通最小二乘法的ARMA模型谐波频率估计 (Ordinary least squares method based on the ARMA model of harmonic frequency estimation)

产生64QAM基带通信系统发射机：基带成型滤波采用3种方式（1）采用每个符号调制一个成型滤波函数，然后将各个函数进行时域叠加的方法； （2）采用信号与低通滤波器响应函数卷积的方法；（3） matlab自带的升余弦函数(Produce 64QAM baseband communication system transmitter: baseband shaping filter uses three ways (1) the use of a molding each symbol modulation filter function, and then each time domain overlay function (2) the use of signals and low-pass filter response function convolution method (3) matlab comes with a raised cosine function)

一阶弹性波方程交错网格差分法(时间2阶空间4阶，带边界条件) 最基础的波长快照(Elastic wave equation of first order staggered-grid difference method (time 2-order space of order 4 with boundary conditions) the wavelength of the most basic snapshot)

介绍通信系统基本结构的simulink仿真程序，包括了脉冲成形，OOK，BPSK，4-ASK，QPSK，Offset-QPSK,MSK,16-QAM的调制解调simulink仿真，可以观察的调制波形和误码率。(This tutorial program introduces the infrastructure of commnication system in simulink form.It contains the simulation of Pulse Shape,OOK，BPSK，4-ASK，QPSK，Offset-QPSK,MSK,16-QAM, and the result form of waveline and error rate can be showed in simulation.)

多频率点的凹口滤波，干扰对消，实现信号与噪声的分离，效果很好。(Recesses of the multi-frequency filtering, interference canceller to realize the separation of signal and noise, and the effect is good.)

语音信号处理实基于MATLAB的语音信号时域特征分析 要求： 按所学相关语音处理得的知识，通过网上学习、资料查阅，自己设计程序，给出某一语音信号的短时过零率、短时能量、短时自相关特征的分析结果，并借助时域分析方法检测所分析语音信号的基音周期(yu yin xin hao chu li)

基于matlab平台实现,MIT人工智能实验室的目标识别的源码,单径或多径瑞利衰落信道仿真。( Based on matlab platform, MIT Artificial Intelligence Laboratory identification of the target source, Single path or multipath Rayleigh fading channel simulation.)