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编程实现龙格--库塔方法，并与精确解比较(compare runge--kuta)

清华大学机械原理课面试题目，复杂机构的计算机模拟源代码(Tsinghua mechanical principle course of interview questions and complex computer simulation of the source code organization)

包括广义互相关函数GCC时延估计，三相光伏逆变并网的仿真，基于kaiser窗的双谱线插值FFT谐波分析，用于信号特征提取、信号消噪，PLS部分最小二乘工具箱,是路径规划的实用方法，构成不同频率的调制信号。( Including the generalized cross-correlation function GCC time delay estimation, Three-phase photovoltaic inverter and network simulation, Dual-line interpolation FFT harmonic analysis kaiser windows, For feature extraction, signal de-noising, PLS PLS toolbox, Is a practical method of path planning, Constituting the modulated signals of different frequencies.)

课设作业，包含飞行器飞行中的姿态控制，如侧滑角，倾斜角，滚转角，俯仰角(Attitude control of spacecraft Contains the pitch angle, roll angle，Tilt angle, sideslip angle)

实现希尔伯特-黄变换的功能，并带有一段测试数据。希尔伯特-黄变换是使用EMD分解将信号分解为本征模态函数（IMF），然后求得IMF分量的瞬时频率。其对于非稳态和非线性信号具有优良的效果。(The function plot_hht is a realization of the Hilbert-Huang transform (HHT). The HHT decomposes a signal into intrinsic mode functions (or IMFs), and obtain the instantaneous frequency data. It is designed to work well for data that are nonstationary and nonlinear.)

很好用的统计模式识别工具箱，用matlab编写，enjoy！(good use of statistical pattern recognition toolkit, prepared using Matlab, enjoy!)

基于SVD分解的总体最小二乘算法,在工程领域有很大的应用(Based on the SVD decomposition of the overall least-squares algorithm, in the engineering field has a lot of applications)

modelseis, seismic modeling forward and inverse modeling,

说明：  spectral efficiency distributed MIMO

程序将一年中的天数转换到相应的月份及日期。适用于TLE数据中的日期转换。程序不用if语句，简单易懂高效。输入参数可以是数组形式。(The program will convert the number of days in a year to the corresponding month and date. TLE data for the date conversion. Program without the if statement, straightforward and efficient. Input parameters may be matrix form.)