mathematical-modeling-of-satellite-

对声音信号进行处理，通过播放来检验处理效果，采用维纳滤波法进行滤波。有详细注解(voice signal processing, using weina.)

蒙特卡洛方法 有趣的蒙提霍尔问题 求选中汽车的概率的模拟值向量(Monte Carlo method interesting Monty Hall problem seeking the analog value of the probability of the selected car vector)

无线传感器网络定位用到的无线传输模型 Regular Model, Logarithmic Attenuation Model, DOI Model, RIM Model (Wireless sensor network localization using wireless transmission model, Regular Model, Logarithmic Attenuation Model, DOI Model, RIM Model Achieve functional distance and transmission attenuation swap ~~~~~~~~~~~~~~~~~~~~~~Regular Model~~~~~~~~~~~~~~~ In this model, the radio range is a circle ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ReceivedSignalStrength=SendingPower-PathLoss e.g, RSS=Pt-Pl(d0)-10*η*log10(dist/d0) Pt:transmit power pl(d0):the pass loss for a reference distance of d0 ηis the path loss exponent above parameters are saved in ../Parameters_Of_Models.mat dist:distance between sender and receiver(m) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ typical value:Pt=0-4dBm(max),Pl(d0)=55dB(d0=1m),η(2~4)=4(indoor,outdoor) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~Logarithmic Attenuation Model~~~~~~~~~ In this model, the radio range is a circle ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ReceivedSignal)

余弦分析采用最小二乘法，以适应一个正弦波的时间序列。余弦分析通常用于生物时间序列分析，演示predictible的节奏。这种方法可用于一个不平等的间隔时间序列。(Cosinor analysis uses the least squares method to fit a sine wave to a time series. Cosinor analysis is often used in the analysis of biologic time series that demonstrate predictible rhythms. This method can be used with an unequally spaced time series.)

matlab motion estimation

Neville插值的源代码，用于Matlab科学计算与数据插值，可与牛顿插值等进行比较学习，适合matlab学习者参考。(Neville interpolation source code for Matlab scientific computing and data interpolation, Newton interpolation can be compared with the study for matlab learners.)

多个体系统的集体行为是复杂系统研究的重要切入点, 而Vicsek 模型是 研究多个体系统的一个基本模型, 它具备了复杂系统的一些关键特征, 如动态行 为、局部相互作用和变化的邻居关系等.(Collective behavior of multi agent system is an important entry point for complex system research, and Vicsek model is a basic model of multi agent system, which has some key features of complex system, such as dynamic behavior, local interaction and changing neighbor relations)

说明：  优秀的ansys ；matlab计算；分析；混凝土开裂计算(Excellent ansys; matlab calculation; analysis; concrete cracking calculation)

可以实现FFT变化的时域图分析，可以清楚的知晓信号随时间的规律变化(Changes can achieve FFT time domain analysis, the signal can be clearly aware of the law change with time)

This code is to find out the PSNR between two different image, which shows the quality of both images