Time-frequency-analysis-toolbox

运用wind matlab 进行量化投资, 例子包括 期货 期权 股票 债券等 (some samples for quantitative investing using matlab)

Eigenfunctions of integrable planar billiards are studied — in particular, the number of nodal domains, ν of the eigenfunctions with Dirichlet boundary conditions are considered. The billiards for which the time-independent Schrö dinger equation (Helmholtz equation) is separable admit trivial expressions for the number of domains. Here, we discover that for all separable and nonseparable integrable billiards, ν satisfies certain difference equations. This has been possible because the eigenfunctions can be classified in families labelled by the same value ofm mod kn, given a particular k, for a set of quantum numbers, m, n. Further, we observe that the patterns in a family are similar and the algebraic representation of the geometrical nodal patterns is found. Instances of this representation are explained in detail to understand the beauty of the patterns. This paper therefore presents a mathematical connection

短时傅里叶变换提取线性调频雷达信号的时频分布，具有很好的效果(When the short-time Fourier transform to extract chirp radar signal frequency distribution, with good results)

flame simulation 1 dimensional...

用matlab实现smith圆图的基本思路和指导。(Using matlab circle diagram smith realize the basic ideas and guidance.)

本程序主要是对点迹数据进行滤波，形成航迹，并在雷达终端中进行显示。 本程序适用于阵列雷达，只显示一个阵面90度的范围。 由于通常雷达显示图以正北（显示器的正上方）为0度，与polar的零度不同，因此存在转化的问题。 (a program about radar display simulation)

异步电机直接启动matlab仿真，为你的毕业设计带来借鉴。(Matlab simulation of induction motor direct start, bring references for your graduation.)

cvx的使用它是一个很有用的MATLAB设计工具 STWC的学习内容(cvx study the use of STWC)

说明：  介绍了线性调频信号的概念，线性调频信号的时频特性描述及用MATLAB进行仿真(the characters of Chirp signal)

Induction motor simulation model, based on matlab/simulink environment for development