2009B

经典书籍《通信系统仿真原理与无线应用》配套源代码，用MATLAB编写的(classic books "communications system simulation and wireless applications principle of" complementary source code, prepared by using MATLAB)

Read magdas binary data

说明：  Leslie模型实例：基于Leslie矩阵的算法，同时将人口按10年一组分成m个年龄段，并根据一些影响人口数量和结构的重要因素（建立模型。再根据我国近十年的二孩出生率的实际情况并结合少数民族不受影响的因素，通过Matlab画出拟合曲线对2017-2030年我国每年人口总数做出预测。此后，根据近十年0-14岁、15-64 岁、65岁及以上三个年龄段的人数，计算出人口抚养比，用Matlab预测至2030年的人口结构。为了使预测更加精确，我们还将夫妇的生育意愿考虑到模型当中。(Based on the Leslie matrix algorithm, the population is divided into m age groups according to a group of 10 years, and according to some important factors that affect population size and structure Modeling. Then according to the actual situation of the birth rate of second-born children in China in the past ten years and combining the factors that are not affected by ethnic minorities, drawing a fitting curve through Matlab will make a prediction for the total population of China in 2017-2030. After that, based on the number of people aged 0-14, 15-64, and 65 years of age in the last ten years, calculate the dependency ratio of the population and use Matlab to predict the population structure by 2030. In order to make the prediction more accurate, we also consider the couple's fertility intention in the model.)

Localization problem(A matlab code for sensor localization)

project report about DTMF method using goertzel algorithm. Also, it analysis the difference between Goertzel and FFT

数值代数常用变换，内部含有Gauss，cholesterol，household，givens,QR分解等变换(Common transform numerical algebra, contains an internal Gauss, cholesterol, household, givens, QR decomposition transformation)

数字信号处理的基本理论与方法，有助于初学者更好的学习！(Digital signal processing of the basic theories and methods to help beginners learn better!)

说明：  救护车的报警程序，分别为1000Hz和800Hz.(Ambulance alarm procedures were 1000Hz and 800Hz.)

用于黑启动求解频率变化值的PQ潮流分解，输出由每次迭代后各参数的变化量。(PQ trend for black start solving the frequency change value decomposition, the output from each iteration, each parameter change.)

这个程序演示了如何应用耦合结构空气动力问题，通过Matlab编程，分析了飞行器机翼颤振等问题。(This model demonstrates how to implement a coupled structural-aerodynamic problem. The wing, otherwise rigid, is allowed to pitch and plunge. The motion of the wing is defined using SimMechanics blocks. The aerodynamic model is a simple, quasi-steady formulation. Dynamic pressure is manipulated by varying the Mach number & Altitude. You can also vary the CG location of the wing by double clicking on the picture of the BACT subsystem. The structural, mass, and aerodynamic properties all come from the following "Modeling the Benchmark Active Control Technology Wind Tunnel Model for Application to Flutter Suppression" by Martin R. Waszak of NASA Langley. Automatic flutter detection is implemented via a state-machine in Stateflow. )