龙格库塔

说明：  二维射线追踪程序！matlab编写！！ 地震声波正演源程序(Two-dimensional ray-tracing program! matlab prepared! ! Forward seismic acoustic source)

rectifier model in hvdc converter circuit

对流扩散方程的上风差分，又称为迎风差分。时间项为显性差分。(Convection diffusion equations with upwind difference, also known as the upwind difference. Time for the explicit finite difference. )

读取SAC格式天然地震数据，可以先读取158字节道头，并且输出NPTS（数字字母码格式），然后开始读取地震数据(Read SAC natural seismic data format that can be read 158 bytes road head, and the output NPTS (alphanumeric format), and then start reading the seismic data)

采用四元数算法，来确定飞行器的姿态状况，同时通过PID方法，调节飞行器的飞行姿态。(Quaternion algorithm to determine the status of the aircraft s attitude, but by PID method, adjusting aircraft flight attitude.)

这是kalman滤波的仿真作业,实现kalman滤波在目标跟踪中的应用(This is a simulation of kalman filtering operations, realize kalman filtering in target tracking application)

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.)

在MATLAB环境中，进行数字图像处理中常用到的小波函数系列之四(In the MATLAB environment, to carry out commonly used in digital image processing of the wavelet function series of four)

SIFT算子程序，，使用简单，，代码有注释，，并给出使用方法(SIFT operator subroutine, use simple code annotated, and given the use)

可以对卡尔曼滤波有较为准确的认识与理解，并且对迭代算法有一定的了解。 (Can to kalman filter have relatively accurate knowledge and understanding, and to have some understanding of iterative algorithm.)