C3s2r

homework 3-1 is difficult

用Matlab处理GPS导航卫星观测数据的程序，也就是O文件，Rinex 2.11版本，代码仅200多行，且包含大量注释，于2017.12.2日调试通过，可顺利读取体积达10M+的O文件，读取的数据准确无误。函数调用格式： [APXYZ DeltaHEN signal_type obsdata] = read_obs(‘krgg3340.17o’)(Using Matlab to process GPS navigation satellite observation data program, that is, O file, Rinex 2.11 version, the code is only more than 200 rows, and contains a lot of annotations. It debugged on 2017.12.2 day. It can smoothly read the O file with volume up to 10M+, and the data read is accurate.)

simulation of DPSK modulation in AWGN channel

NRTL活度系数模型，里面采用了温度拓展的形式，可以在大范围温度下使用。(NRTL activity coefficient model, which uses the temperature expansion of the form can be used in a wide range of temperatures.)

THIS CODE FOR take photo in webcam,very usefull

说明：  RBF和BP分开的两个神经网络，可以用于对比，可适用于多种背景(RBF and BP separate two neural networks, can be used for comparison, can be applied to a variety of backgrounds)

用变形核密度模型对数据的统计分布进行估计，常用于金融信用分析、财产保险精算等领域，是一个很有效、常用的非参数模型(Deformation of the nuclear density model of the statistical distribution of the data to estimate the financial credit analysis, property insurance and actuarial fields, is a very effective and commonly used non-parametric model)

in this program, I have reduced dimension of iris data with MDA

VQ在语音识别中的应用，选取十个语音，分别进行训练和测试，实验效果不错，值得学习(VQ in speech recognition, the application of selected ten voice, for training and testing respectively, the experimental effect is good, is worth learning)

Nearest Neighbor for TSP with 2-opt MATLAB