task2

这是一本研究目标定位跟踪的学习手册（在雷达，声纳，无线传感器网络领域等），采用的方法有最小二乘/极大似然，卡尔曼滤波，蒙特卡洛，粒子滤波等方法，更是很多读者需要的是里面有大量的仿真实例和程序代码，并配以中文注释，读者可以结合书中的原理和公式，对程序有进一步的理解。也适合很多读者在已有的代码的基础上对算法进行改进。(This is a study targeting the learning manual tracking (radar, sonar, wireless sensor networks, etc.), using the least squares method/maximum likelihood, Kalman filtering, Monte Carlo, particle filtering methods , but many readers need is there are a large number of simulation examples and program code, and with Chinese notes, the book the reader can combine the principles and formulas, a better understanding of the program. Also suitable for many readers on the basis of the existing code to improve the algorithm.)

用matlab仿真轴承故障信号构造轴承故障的仿真信号，其中轴承的固有频率fn=3000Hz , 位移常数y0=5, 阻尼系数ξ＝0.1, 冲击故障发生的周期为0.01s，采样频率fs=20KHz, 采样点数N=4096。要求：根据上述条件构造轴承故障的仿真信号，画出其时域波形及频谱图。(Matlab simulation bearing fault signal)

Communication tehnoligies Part1

在matlab中使用竞争算法实现独立分量分析(A structured implementation of Imperialist Competitive Algorithm (ICA) in MATLAB)

FEM在MATLAB上编程的说明书，关于MESH,ESTIMATION等(On FEM in MATLAB programming instructions, on the MESH, ESTIMATION, etc.)

coherent detection matlab simulink

产生rand，本代码主要介绍产生rand的主要步骤，非常简单有很明了，非常适合阅读 (Rand, the code describes the main steps of Rand are very clear, very simple, very suitable for reading)

kmeans聚类算法，比较经典的算法，里面有讲解，容易理解(kmeans clustering algorithm to compare the classical algorithm, which has to explain, easy to understand)

该例程内容丰富，包括从基本的bpsk,qpsk,qam到实际的ofdm系统，cdma链路，mac层仿真分析，对OFDM信道建模，包括普通IDFT算法和IFFT快速算法，基于OFDM体制的调制和解调程序，降低OFDM系统PAPR的pts算法的仿真程序，完整的OFDM链路程序并作了较为具体的解析(The routines cover a wide range from basic bpsk, qpsk, qam to the actual ofdm systems, cdma link, mac layer simulation, the OFDM channel modeling, including ordinary IDFT algorithm and IFFT fast algorithm, based on OFDM modulation system and demodulation process, reduce the PAPR of OFDM system pts algorithm simulation program, a complete OFDM link process and made more specific analysis)

实现基于PSO的三维图形的极值计算，并显示中间的搜索过程。(Implementation is based on PSO to calculate the extremum of 3 d graphics and display in the middle of the search process.)