Chapter2

人提供了一种小波去噪和小波包去噪的对比研究的matlab代码，供大家相互学习和参考(Provide a comparative study of wavelet de-noising and wavelet packet denoising matlab code for everyone to learn from each other and reference)

把激光陀螺捷联惯导系统和GNSS接收机固联于实验车实验仓中，接收机天线固联在实验车实验仓上方，车载计算机实时接收和采集惯导系统、卫星导航接收机的原始数据，在郊外开阔公路进行车载实验。 通过matlab编程实现卫星导航伪距单点定位、INS/GPS松组合导航的全过程。 1）卫星导航单点定位测速：利用采集得到的接收机时间、伪距、多普勒频移数据，要求进行单点定位、测速解算，输出接收机的位置、速度随时间的变化曲线，并给出位置、速度误差曲线； 2）松组合导航：结合惯导解算和卫星接收机单点定位测速，要求采用Kalman滤波器实现惯导/卫星位置、速度组合导航解算，滤波器维数至少包括惯导的位置、速度、姿态角9维。将组合导航后的姿态角与纯惯导的姿态角进行对比分析，给出位置、速度误差曲线。(The laser gyro strapdown inertial navigation system and GNSS receiver are fixed in the experimental compartment of the experimental vehicle. The antenna of the receiver is fixed above the experimental compartment of the experimental vehicle. The on-board computer receives and collects the original data of the inertial navigation system and satellite navigation receiver in real time, and carries out on-board experiments on the suburban open highway.)

极化SAR定标处理matlab程序，采用Quegan算法(Polarization SAR processing matlab calibration procedures, the use of Quegan algorithm)

根据手机号码判断城市，需要手机号码7字段对应城市的信息。(According to cell phone number to determine the city, needed a mobile phone number 7 corresponds to the city' s information field.)

此程序由MATLAB编成，具有识别指纹的功能(This program compiled by the MATLAB has the function of fingerprint recognition)

说明：  多尺度熵，用于对图像和各类数字信号进行处理(multiscale entropy used for the signal processing)

说明：  Dijkstra算法求解非负有向图的最短路径，算法的MATLAB实现。分享推荐。(Dijkstra algorithm to the graph of non-responsibility shortest path algorithm of MATLAB implementation. Sharing recommended.)

说明：  关于8PSK译码的matlab小程序，简单易懂，很是好用的，有好东西相互交流(8PSK decoding matlab on a small program, easy to understand, it is easy to use, there are good things to exchange )

source code Fourth Order Partial Differential Equations for Noise Removal,

采用matlab的simulink模块实现了基于矢量控制的永磁同步电动机控制系统，电机模型为matlab自带模型，SVPWM的实现则采用了模块搭建，仿真模型运行时间快，效率高，便于学习研究(Using the matlab simulink module implements the permanent magnet synchronous motor control system based on vector control, motor model for matlab own model, SVPWM implementation of the module is used to build simulation models running time, high efficiency, easy to learn study)