programPicture.m

改程序可以读取RINEX3.01格式的伪距和星历文件。同时适用于GPS和北斗系统。(The program can read observe files and ephmeris files in RINEX format.It also applies to GPS and Beidou system.)

利用matlab程式進行對灰階圖片的縮放,歪斜,平移等動作,另外提供指令版本。(Matlab program for the use of pairs of gray-scale image scaling, skew, translation etc, and also offers instruction version.)

8与定向消失moments.pdf双通道滤波器(8On two-channel filter banks with directional vanishing moments.pdf)

说明：  阵列信号处理理论与应用相关matlab代码，资源很多，很全，包含信源数估计、doa估计、music算法等(Array signal processing theory and application related matlab code, many resources, very comprehensive, including source number estimation, doa estimation, music algorithm, etc.)

program to construct a siusoidal signal

采用(去偏)的复自相关法计算混沌时间序列最佳延迟时间DelayTime的Matlab原程序(used (last partial) of the complex autocorrelation calculated chaotic time series best of the delay time DelayTime Matlab original program)

Find intersection of two curve! enjoy it

I am submitting my Computational science and engineering assignment #3 based on SVD/PCA.The zip file contains matlab codes of Exercise no:1 and Exercise no:3 as program_1.m and program_3.m files respectively. I have made a separate reports for the above said two exercises as Report_problem1 and Report_problem3, both in pdf format. Please find the attached zip file.

SVC PSR 光谱数据的读入，光谱平滑，光谱重采样，文件批处理；(these files afford a convenience way to read SVCPSR, resample spectral and smooth the spectral.)

(有源代码)数值分析作业,本文主要包括两个部分,第一部分是常微分方程(ODE)的三个实验题,第二部分是有关的拓展讨论,包括高阶常微分的求解和边值问题的求解(BVP).文中的算法和算例都是基于Matlab计算的.ODE问题从刚性(STIFFNESS)来看分为非刚性的问题和刚性的问题,刚性问题(如大系数的VDP方程)用通常的方法如ODE45来求解,效率会很低,用ODE15S等,则效率会高多了.而通常的非刚性问题,用ODE45来求解会有很好的效果.从阶次来看可以分为高阶微分方程和一阶常微分方程,高阶的微分方程一般可以化为状态空间(STATE SPACE)的低阶微分方程来求解.从微分方程的性态看来,主要是微分方程式一阶导系数大的时候,步长应该选得响应的小些.或者如果问题的性态不是太好估计的话,用较小的步长是比较好的,此外的话Adams多步法在小步长的时候效率比R-K(RUNGE-KUTTA)方法要好些,而精度也高些,但是稳定区间要小些.从初值和边值来看,也是显著的不同的.此外对于非线性常微分方程还有打靶法,胞映射方法等.而对于微分方程稳定性的研究,则诸如相平面图等也是不可缺少的工具.值得提出的是,除了用ode系类函数外,用simulink等等模块图来求解微分方程也是一种非常不错的方法,甚至是更有优势的方法(在应用的角度来说).((Source code) numerical analysis homework, this docment includes two parts, the first is ordinary differential equations (ODE) of the three examples, the second part is about the expansion of the discussion, including the higher-order ordinary differential & boundary value solution Problems (BVP). the text of the algorithm and numerical examples are based on the Matlab. ODE from the rigid (STIFFNESS) look into the issue of non-rigid and rigid problem, rigid problems (such as large coefficient VDP equation) such as using the always method ODE45 used to solve the problems , efficiency will be low, with ODE15S the other hand, many of the high efficiency. and the usual problem of non-rigid, there will be used to solve ODE45 very good results. Judging from the order can be for high-order differential equations and first-order ordinary differential equations, higher-order differential equations can be transformed into a general state space (STATE SPACE) used to solve the low-order different)