invariance

说明：  本文研究了GPS接收机的捕获算法，并基于Matlab软件平台和射频前端在Pc上实现了GPS软件接收机样机。(In this paper, the GPS receiver to capture algorithms, and Matlab-based software platform and the RF front-end has been realized in the Pc software GPS receiver prototype.)

music算法，修正算法music，空间平滑，谱估计(music DOA)

it is useful for my research

说明：  可以熟悉matlb实现backstepping经典控制算法的例程(Can be familiar with MATLAB to achieve the classic backstepping control algorithm routines)

f uso please do not put files on these two directory.

用线性预测编码进行语音压缩 - Speech compression using Linear Predictive Coding(LPC is the oldest and the most basic of modern speech coders. Its a lossy scheme. Playback quality isn t preserved in the process but it can be used in low bit-rate systems.)

(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)

将采用训练函数 traingdx 和“提前停止”相结合的方法来训练 BP 网络，以提高 BP 网络的推广能力(Will use the training function traingdx and " stop ahead" a combination of methods to train BP network to improve the generalization ability of BP network)

MATLAB多个小程序:关于MATLAB中数组函数的使用以及运算(small number of MATLAB : MATLAB array of functions and the use of Operational)

matlab命令大全。全面介绍了matlab5.3版本的全部命令，以及他的描述、语法和应用。包括数值计算、数据分析、绘图、图像处理、用户图形界面创建等……(matlab command Daquan. A comprehensive introduction to all of the commands matlab5.3 version, as well as his description, syntax, and applications. Including numerical computation, data analysis, graphics, image processing, graphical user interface to create, etc. ......)