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室内实时定位系统两地算法TWR和对称两地算法SDS-TWR的误差分析，得出SDS-TWR大大提高精度(Both indoor RTLS algorithm and symmetric two TWR SDS-TWR algorithm error analysis, the SDS-TWR greatly improved accuracy)

本文为Stephen J.Chapman《MATLAB 编程（第二版）》英文影印版的中文译本，这本 书对初学者很好的入门教材。(This article Stephen J.Chapman " MATLAB Programming (second edition)," The Chinese translation of the English version of a photocopy, this book is a good primer for beginners.)

说明：  隐马尔科夫模型是关于时序的概率模型，描述由一个隐藏的马尔科夫链随机生成不可观测的状态随机序列，再由各个状态生成一个观测而产生观测序列的过程。隐藏的马尔科夫链随机生成的状态的序列，称为状态序列；每个状态生成一个观测，而由此产生的观测的随机序列，称为观测序列。马尔科夫链由初始概率分布、状态转移概率分布以及观测概率分布确定(The hidden Markov model is a probabilistic model for time series. It describes the process of randomly generating unobservable state random sequences from a hidden Markov chain, and then generating an observation by each state to produce an observation sequence. A sequence of randomly generated states of hidden Markov chains, called a sequence of states; each state produces an observation, and the resulting random sequence of observations is called an observation sequence. Markov chain is determined by initial probability distribution, state transition probability distribution and observation probability distribution)

样本熵在信号分析中有很重要的作用，其主要用来提取非线性特征，从而用于特征分析。(Sample entropy has a very important role in signal analysis, which is mainly used to extract the nonlinear characteristics for analysis.)

最小二乘支持向量机，程序粘到command window里，设定 2 两个参数，可以更改，以达到最优化(igam=0.001 isig2=0.001 [gam,sig2]=tunelssvm({X,Y, f ,igam,isig2, RBF_kernel },... [0.001 0.001 10000 10000], gridsearch ,{}, leaveoneout_lssvm ) type= function approximation kernel= RBF_kernel model=initlssvm(X,Y,type,gam,sig2,kernel) model model=trainlssvm(model) Yt=simlssvm(model,Xt) )

MATLAB插值与数据拟合、样条插值与数值微积分、由已知数据拟合数学模型、信号分析与数字信号处理基础(MATLAB interpolation and data fitting, spline interpolation and numerical calculus, from the known data fitting mathematical model, signal analysis and digital signal processing-based)

本程序对简约的粗糙集程序进行了matlab编导，从而能够计算粗糙集的权重、约简等(This procedure is simple rough set procedures matlab director thus able to calculate the weight of rough set reduction)

一篇基于物理层MIMO OFDM 的研究论文，是大家入门的好东西(A MIMO OFDM based physical layer research papers, is a good thing we started)

用collocation方式对过河问题进行优化(collocation OPT)

FFT程序，在做OFDM时是必要的模块，很有用，在matlab上仿真实现。(FFT program, is necessary when doing OFDM module useful in matlab Simulation. )